Supplement to a revision of Australian members of the bee genus Homalictus (Cockerell) (Hymenoptera: Halictidae)

14 Pages·1997·0.9 MB·English

by  Kenneth L. Walker

Memooiftr hsMe u scoufmV ict5o6r)(i:1a6 9(1- 98927 ) 28 February 1997
https://doi.org/10.24199/j.mmv.1997.56.03
SUPPLEMTEONA T R EVISIOOFAN U STRALMIEAMNB EROSFT HEB EEG ENUS
HOMALIC(TCUOSC KER(EHLYLM)E NOPTHEARLAI:C TIDAE)
KENNETWHA LKER
DepanmoefEn ntt omoMluosgeyou,fVm i citao,r
71 ViCcrteosrcAiebanb stof,to Vrid3c.0. 6 A7u,s tralia
Abstract
Walker9.9 S7Ku. p .p.l et1amor e envti osfAi uosnt rmaelmibaoentfr h sbe eg ee n1u/so mal­
iclus(C)(oc HkyemreenloHlpatleircaMt:ei mdoaoiefhr)tesM. u se<u?(mV ic5t66o:9r -i8a2 .
Finveesw p ecHioemsa,/ aidcitauzsJeI p.li u/so.sI iImg.en gyaax,n Ha.s/ i/cwasar,ni dt ts
/-I.r ertitchmuea/ luoe/sfs./,a ndr(eKwisr/ib/ ay.t) rW,uasl akne/dr/m .a i1/a11cdlil()C ockcr
anfde maolfHe .f orraersdete asec rTihbdeei ds.c oovfIIe m.re yg agneaxtthetunhsde s
knodwni stroifbH u.t i(oP�a pMuiac/hiepcnrteeurvs,i)N o euwGs uilnyei ann.to or th-east­
erAnu starnardle iqau tihree ss ubgenteobr eirc e vdiIisnaefgdesn.rpo resercideis le sa tion­
shibpass,oe nnd e walvya iclhaabrlsaetc atatererres e ,v ised.
Introduction CSIRCOa,n beArursat,rC aalpiiTatenar �lr; i to
BCRBIi,o loagniCdch aelm iRceasle Ianrscthi ­
Walk(e1r9 r8e6v)i asniednd f esrirsetde r-group
tutRey,d almSeyrdenN,ee yw,S ouWtahl es;
relatifoor3n 9sk hniopswspn e coiAfeu ss tralian
BMNHN atuHriaslt Moursye uLmo,n don
Homa/CiocctkuesAr seulplp.l etmote hnatt
(statnuatmBoerr:iy Mt uisseh(u Nma tHuirsa­l
revnii snsio onwe cesFsiavnreeys w.p ecairecs
torNyM)V)M,;u seoufVm i ctMoerlibao,u rne,
recoginnicsleutdhd,fei i nArgus stt rsapleicaine s
Victoria.
otfh seu bgPeanupsu aM/iicchteaunnsmed ar l es
Descriapbtbirveev iaartaeis foo lnlso ws:
oft hraenetd h fee moafol nepe r evikonuoswlny
AOD antennodciusltaaCrnL c,ce l;y peus
specairdeees s crainbfideg du rfoertd h fier st
lengCtWh,c; l ypweiudsEt Wh,;e ywei ditnh
timTeh.e sspee sca ineda dditcihoanraalc ter
sidvei eFwL;,fl agellumG Ll,ge lnogstsha;
sta(tbeosst ehx heesa:md e,s oscauntpdur mo ­
length; GWg,e nwmaialdxi tisnhmi vudimee w;
podesumc ulpcthuarerera icstatnidmc asl;e
HLh ealde ngHtWh,h; e awdi dItAhD;i, n ter­
genitaarulesi eatd)or eviinsfee srpreecdi es­
ant�dninsatla ncien;t elrOodDci,es ltlanacre ;
groruepl asthiiopns.
LIDl owienrt erdoirsbtiMatLnam,cla e n;d ible
TerminaonlAdob gbyr eviatiolnesn gOtAhD;,o cellantennOaOlD , distance;
ocelldoicsutlaSaln r-c Sem8;e, t assotmearln a
Terminaonlmdoe gtyhfo oldlsWo awl k(1e 9r8 6)
1-8S;Ls ,c alpeen gTtlh-;Tm Se,t astoemragla
witthh eesxec epttihgoean ssit:sce arl tlheed
1-5U;I Du,p pienrt erdoirsbtiatnacle .
metastohmfeao ·r elweinnmgget ahs urement is
takfernot �hb ea osfet haer cubaatsveae l(i Mn) Homa/Ciocctkuesr ell
ttoh dei stamla-rmgooiftsnh tt e h isrudb margi­
IlomaCloicckleu1rs9e 11l93lT:.,y psep ec/i-elsa:/ ­
nacle (l2lnr d- ma)n;dr ,e lahteiamvdee a sure­
ict/uasc /obCaoncekne1sr9ie1s4l5 8l:(8, b oyr iginal
menatrsse t andatroadh iesawedid d otf1h 0 0
designation).
uniatlsl otwhietnmbog e e xpreassaps eerdc ent­
agaen tdh eredfoirreec cotml�pyd�ab etween SubgeHnoumsa /ictus
sexaenssd p ecSiceusl.pd teufirne1fo tl1loonws
DiagnSoeWseai lsk(.1e 9r8 I16 5:) .
Har(r1 i9s7a 9n)pd u nctdaetnisroiantt ayer se
definaesdd:e n-sien terbseptawcpeeuesnn c ­
Homa/(iHcotmuas/ ictusspn).o va.d iazetus
turleetss hsa n dioafapm uentcetrcu lro-es;e
interbseptawcpeeuesnn c teuqruteasodl i amM­aleerixaalm iHnoeldo.t 9yQ pledB.,u nyMat s
(2°56t'1S5°,31 4'2E2J) a,1n 9 3N8.G, e ary.f t2 000
etoefrp unctoupre-en;i nterbseptaewcnees
_ (I6O m )( AMM;i ssriinghghi tnt da rsal segments.)
punctgurreeatsth eaornn b eu lte _tshsat nw iceParatlye;,Np ScW.M, i nnamFuarlr(la3°3s 48 'S.
diameotfpe urn etsupraer-;s met eressp1a5°403'1E0F) e,1b 9 6C2..EC .h awdick
7 (BCIU).
betwpeuennc teuqruteaooslg r reattewri tchea n
diamoeftp eurn cture. DiagnAo mseimsb.oe frt h"es phed_ecso"doi
Institauratebi bornesva isa tfeoAdlM l,o swpse:c ie(ss-Wegaerl oku(1ep 9r 8 f6o)sr p ec_1es­
AustrMaulsieauSnmy ,d nNeeywS, o uWt�hl csg;r oduepfi tniionfse)m;aw lietfr ho nsst riate
ANICA,u strNaaltiiaoInnn asCleo cltl ecatb1ooavnne,t ebnansape)rs o,n odtourms olateral
69
WALKER
H) K.
angles sharply acute, mesoscutum mcsially and hirsute; metasomal T1-T2 glabrous, T3-T4
posteriorly densely punctate, parapsidal areas with sparse hair cover.
scabrous, dorsal surface of propodeum striate Distribution. South-eastern Queensland and
with a few intereonnectives mcsially. coastal central New South Wales.
Description of female, (male unknown) Etymology. The epithet "adiazettts" means
(measurements of holotype in bold). Body unpolished and referstothesculpturepatternon
length: 5,18-5.39 mm; Forewing length: 1.48- the head and mesoscutum.
1.51 mm; Head width: 1.47-1.49 mm. Relative Remarks. Ilomalietus adiazelus body colour
head measurements: IIW: 100; IIL: 81-82; UID: patterns arc similar to //. megastigmus (Cock-
58 59; LID: 54-55; AOD: 18-20; IAD: 9-10; ercll)and //. /mw/ram(Coekercll)but thecoarse
OAD: 33-34; IOD: 16-17; OOD: 15-16; CL: vertical striaeon the fronsand thedensely punc-
18-19; GW: 16-17; EW: 24 25; SI,: 44-45; FL: tate mesoscutum differs from both.
80-82.
Structure. Head broad, inner orbits converging Ilomalietus (Ilomalietus) andrewsi
below, median frontal carina almost absent, (Kirby) comb. nov.
extending just beyond supraclypeal area, eyes
with sparsecoverofminute setae. Scape reaches Figures 1-3
at least posterior margin ofmedian ocellus. Cly- Ualietwi andrewsi Kirby, 1900: 86.
peus weakly convex, in side view, anterior half
Syntypes. II9, Christmas Island, north part of the
shining, densely to closely punctate with large, island, January 1898, Andrews (BMNH; not exam-
deeppunctures, posteriorhalfdull,covered with ined).
a line reticulate pattern, sparsely punctate with
small, shallow punctures. Frons striate above Material examined. Christmas I. 52y Ethel Beach
(l()°28'S, 105'42'E), 15 Apr 1989. J.C. Cardale (col-
antenna] bases to level of posterior margin of
lected in eitherclosed forest orvcllowtrays); 79, 2rfnr
medianocellus,sculpturelaterallystriatethough Grants Well (I0°29'S, t05°39'E), 15. 24 and 29 Apr
weakened to smoothly and sparsely punctate 1989,J.C Cardale(c?collected ;il light); 5y, 1^Central
along inner margin of eyes, lower paraocular AreaWkshp(IO°29'S, 105°38'E), 14-15Apr 1989,J.C.
areas smooth, shining and glabrous; vertex Cardale; lylily Beach Road (10°28'S, 105°42'E), 13-
almost smooth, with a few transverse striae. 28 Apr, I.C. Cardale. malaise trap/trough. (AN1C).
Fronolum dorsolateral angles sharply acute, Diagnosis. A member of the urbanus species-
weakly projected. Mesoscutum surface dull, group; female with frons finely striate, pro-
anterior margin straight, anteriorly sparsely notum dorsolateral^ rounded, mesoscutum
punctate, mcsiallyand posteriorlydensely punc- posterior two thirds densely punctate, dorsal
tate, parapsidal areas scabious, punctures con- surface of propodeum smooth except with sev-
tiguous with raised edges. Scutellum shining, eral striae on basal half; male with frons striate,
closely to densely punctate, seulellum length mesoscuium impunctate, genae with conspicu-
equal to length ofdorsal surface ofpropodeum. ous cover oflong, plumose hair.
Dorsal surfaceofpropodeum not defined bycar-
mac, sculpture broadly striate with a few inter- Description offemale. Body length: 5.24-5.78
connectives mcsially, sculpture reaches lateral mm; Forewing length: 1.32-1.41 mm; Head
margins only. Mcsepistcrnum and metepister- width: 1.55-1.62 mm. Relative head measure-
ruim smooth, covered with a fine reticulate pat- ments: HW: 100; HL: 88-91; UID: 48-49; LID:
tern. Fore basitarsal comb fan shaped, hind 51-52; AOD: 18-19; IAD: 09-10; OAD: 33-34;
basitibial plate apically rounded, inner hind tib- IOD: 15-I6;OOD:09-10;CL:20-21;GW: 17-
ial spur coarsely serrate with apices of at least 19; EW: 26-27; SL: 45-46; FL: 95-98.
live teeth, their bases fused. Structure. Head elongate, innerorbits diverging
Colour. Head, scutellum and propodeum below, oeellocular distance markedly less than
black, antennal scapes dark brown, llagellum interocellar distance. Frons finely striate, striae
segments light brown; mesoscutum dull with a with intereonnectives giving appearance of a
dark blue hue: metasoma red-brown Suffused widely spaced reticulate pattern, supraclypeal
with dark brown apically; legs red-brown except area and clypeus dull, covered with minute
femora, trochanters and coxae a darker brown. reticulate pattern, almost impunctateexcept for
lesliture. Body sparse, head and mesoscutum several weak, sparse, shallow punctures. Frono-
with short erect, minutely branched hair, mcta- tum dorsolateral^ rounded, not well projected.
notum and lateral margins ofscutellum densely Mesoscutum and scutellum dull, covered with a
THE BEE GENUS IIOMAUCTUS
71
conspicuous minutely reticulate pattern, made by MrC. Andrewson Christmas Island in
anterior halfof mesoscutum sparsely punctate, 1898. MsJ.Cardalecollectedextensively(direct
posterior two thirds and scutellum densely sweeping,yellowpan,malaiseandlighttraps)on
punctatewith shallowpunctures. Dorsal surface Christmas Island in 1989 yet the only halictid
of propodeum not defined by carinae, surface species collected was H. andrewsi (pers. comm.
dull, smooth except with several striae on basal J.C. Cardale). Pachyhalictusbinghamimay now
half. Metasomal tcrga impunctate. be extinct.
Description of male. Body length: 4.69-4.80
mm; Forewing length: 1.19-1.22 mm; Head Homatictus (Homatictus) atrus Walker
width: 1.32-1.34 mm. Relative head measure- Figures 4-6
ments: HW: 100; HL: 91-93; U1D: 54-55; LID:
40-41; AOD: 13-14; IAD: 1-12; OAD: 31-33; Homatictus aims Walker. 1986: 122.
1
IOD:14-15;OOD: 14-15; CL: 21-22; GW: 16- Materialexamined. Holotype. 9Qld. MosesCk. 4 km
17; EW: 29-30; SL: 36-37; FL: 114-116. NEMtFinnigan(15°47'S, I45°17'E), I4-I60ct 1980.
Structure, Head elongate, inner orbits con- J.C. Cardale (AN1C).
vanetregriinogrbemlaorwg,innootfstmreodniglaynsoo,ceslclaups.ejRuestmareiancdheers wNroaOvitthh1e9rR8a8sn,pgeeK.c,i3Wm0aelnkksmereEx(aoNmfMiCnVoe)ed.n: (Q1l3d°:50'1S3.9,14139°rlf7'MEc)l,l3-
ofbodysimilarto femaleexcept: fronssculpture
distinctly striate, supraclypeal area, clypeus, Diagnosis. A member of the "blackburni"
mesoscutum and scutellum impunctate, all dull species-group; male with frons impunctate, cly-
and covered with a conspicuous reticulate pat- peus black, pronotum dorsolateral angles acute,
tern, dorsal surface of propodeum sculpture mesoscutum sparsely toopenly punctate, dorsal
restricted to basal margin. surface ofpropodeum sculpture ruguloso-strio-
Colour. Head and mesosoma dull metallic late, fore and mid leg tarsal segments flanged
green, head with agolden sheen, metasoma with laterally,gcnal hairslong, forelegcoxaeandtro-
dark emerald green, surface with distinctive chanters and mid and hind coxae with dense
sheen; legs with coxae and femora dark green cover of long, plumose hair, lateral margins of
except mid femora suffused with red-brown, foretarsiwithlong, simplehairs,rasp-likesculp-
tibiae and tarsi red-brown and variously suf- ture on the apicoventral surface ofthe genitalia
fused with dark brown. volsellae.
Vestiture. Body sparse, head and mesoscutum Description of male. Body length: 4.24-4.47
with sparse cover ofshort, erect, branched hair, mm; Forewing length: 1.01-1.06 mm; Head
genae with conspicuous cover oflong, plumose width- 1.27-1.29 mm. Relative head measure-
hair forming a beard, metasomal sternites with ments: HW: 100; HL: 86-88; UID: 58-61; LID:
moderate cover oferect, plumose hair, hair not 34-35;AOD: 12-13; IAD: 10-1 1; OAD:35-37;
foGremniintgaldiiastainncdtiavsesopcaitatteernd.sterna, (figs 1-3). I16O;D:EW1:8-3220-;3O3O;DS:L:1248--1350;;CLF:L:201-725-11;7G9W.: 15-
Structure. Head broad, sculpture smooth,
Distribution. Christmas Island.
covered with a finely reticulate pattern, frons
Remarks.Themaleisdescribedand figured here and supraclypeal area impunctate. clypeus
for the first time. Kirby's description of the sparsely punctate; inner orbits converging
female is adequate forspeciesrecognition, how- strongly below; scape reaches well short of
ever, the partial redescription presented here anterior margin of median ocellus. Pronotum
provides characters necessary for comparative dorsolateral angles acute, weakly produced.
purposes. Homatictus andrewsi is most like H. Mesoscutum and scutellum dull, microtessel-
urbanus (Smith) but differs in both sexes by the late, both sparsely toopenly punctate with shal-
sculpture on the dorsal of the propodeum lowpunctures.Dorsalsurfaceofpropodeum not
{andrewsi- almost smooth; urbanus- coarsely defined by carinae, sculpture ruguloso-striolate,
ruguloso-striate). The shape of the eyes in the extends to dorsal rim. Fore and mid leg tarsal
female (inner orbits diverging below) does not segments flanged laterally.
occur in any other member of the urbanus Colour. Body black except antennal flagella
species-group. Kirby 900)describedtwohalic- dark brown; legs brown except tarsi light red-
(1
tids, Halictus andrewsi and H. binghami (the brown.
latter now placed under Pachyhalictus Cock- Vestiture. Bodysparseexceptgenal hairslong,
erell; see Michener(1978)), from thecollections forming a "beard", mesoventral area and fore
WALKER
72 K.
leg coxae and trochanters with dense cover of Description offemale. Body length: 4.62-4.85
long, plumose hair, mid and hind coxaeand tro- mm; Forewing length: 0.87-0.96 mm; Head
chanters with similar hair, forming a moderate width: 1.24-1.32 mm. Relative head measure-
cover: lateral margins of fore tarsi with long, ments: HW: 100; HL: 92-94; UID: 64-65; LID:
simple hairs. 56-58; AOD: 18-19; IAD: 09-10; OAD: 36-37;
Genitalia andassociatedsterna, (figs 4-6). IOD: 18-19;OOD: 18-19; CL: 20-21; GW: 16-
17; EW: 27-28; SL: 40-41; FL: 70-72.
Distribution. Cape York Peninsula and north
Queensland. Structure. Head elongate, inner orbits con-
verging strongly below, median frontal carina
Remarks. Themale isdescribedand figured here present, reaches less than halfway to median
for the first time, llomalictus atrus is most like ocellus; eyes with sparse cover ofminute setae.
//. luieipes (Friese) but differs in both sexes by Scape elongate, just reaches anterior margin of
colour and sculpture characters (atrus 9: tibiae median ocellus. Clypeus with more than two-
black, propodcum openly ruguloso-striolate, <S: thirds projected below lower margins of eyes,
clypeus black, propodeum ruguloso-striolate; weakly convex in side view, anterior margin
luieipes 9: tibiae light red-brown, propodeum straight, anterior half with several, large punc-
closely ruguloso-striolate, cf: clypeus dull white ture, posterior halfopenly to sparsely punctate
on lower one third, propodeum weakly strio- with small, shallow puncture, supraclypeal area
lale). Female characters alone inferred a sister- sparely punctate. Frons and genae weakly stri-
group relationship of //. atrus with //. luieipes ate, striaereach anterior margin oflateral ocelli,
(Friese),a Papua NewGuineaspecies. However, vertex smooth. Pronotum dorsolateral^
with additional malecharactersand newspecies rounded,weakly projected. Mesoscutum surface
now available, two clades involving live species dull,coveredwithmicrotessellatcpattern,anter-
seem apparent. Prominent projections on the iorly impunctate, mesially closely to densely
apicoventral surface of the genitalia volsellae punctate, openly to closely punctate in parap-
provide a synapomorphy for a clade containing sidal areas. Scutellum openly to closely punc-
// luieipes (fig. 4), //. cassiae/loris (Cockerell) tate, scutellum length equal to length ofdorsal
(see Walker, 1986: fig. 19a) and //. eurhodopus surface of propodeum. Dorsal surface of pro-
(Cockerell)(seeWalker, 1986: fig. I9d). Foreleg podeum not defined by carinae, sculpture
vestiture (fore leg coxae and trochanters with coarsely ruguloso-striate, extends to dorsal rim.
dense cover of long, plumose hair and lateral Mcsepistemum and metepisternum striate.
marginsofforetarsi with long, simplehairs)and Anterior surface ofhind tibia with hairs nearly
the rasp-like sculpture on the apicoventral sur- simple, bristlelike or with or 2 branches (no
face of the genitalia volsellae provide synapo- area with abundant, short, eIrect, plumose hairs
morphies fora second clade containing //. atrus as is usual for the genus); hind tibiae slender,
and //. pilosignya sp. nov. under surface scarcely concave; hind basitibial
Homalictus (Homalictus)forrestae Walker plate apically rounded; inner hind tibial spur
coarsely serrate with 2 teeth.
flomaiktm.formtaeWalker, 1986: 39.
1
Colour. Head blue-green, though frons above
Material examined. Old, Hcathlands (ll"45'S,
I42°35'EJ: 2V 25 Jul-IX Aug; Itf Jun-25 Jul; 2y IX antcnnal bases, supralclypeal area and basal half
JA.uCga-rdIaXlcS,epT;.1W9eiIrX,SLe.p-Mi2llIeOrcat;nd19E9.2N,iePl.seZnb,oreoxwsMkail,- opfeucslybpleaucsk;waintthecnonpapeedratrikngber,orwenmaeixncdepetr uonfdcelry--
aise trap. (ANIC) neath offlagellar segments light brown; mesos-
cutum and scutellum green-blue sufTused with
Diagnosis* A memberofthe "forrestae" species- copper tinge, propodeum dark blue, metasomal
group; female with frons weakly striate, prono- terga dark brown; legs with coxae, trochanters
tum dorsolateral^ rounded, mesoscutum and femora dark brown, apical end of femora,
mesially closely to densely punctate, openly to tibiae and tarsi light red-brown.
closely punctate in parapsidal areas, dorsal sur-
face ofpropodeum sculpture coarsely ruguloso- Vestiture. Body sparse, except tomentose hair
striatc, anterior surface ofhind tibia with hairs onpronotum mesodorsaland dorsolateralareas,
nearlysimple, bristlelikeorwith I or2 branches lateral marginsofpropodeumwith longplumose
(no area with abundant, short, erect, plumose hair; ventral metasomal scopae as usual for the
hairs as is usual for the genus), hind tibiae genus, hind leg scopae present though not as
slender, under surface scarcely concave. pubescent as is usual for the genus.
THE BEE GENUS HOMALICTVS
73
Figures 1-9. Homalictusspp. malegenitalia. H, andrewsi: figs 1-3:<S,Christmas Island,GrantsWell,Apr 1989,
i.C Cardale., ANIC. H. atrus: figs 4-6: cf, Qld, McllwriatWh Range, 30 km E ofCoen, 3 Nov 1988, K. Walker,
NMV. //. inaitlandi: figs. 7-9:cf,Qld,ClaudieRiver, 1 mi ofMt Lamond, 19 Dec 1971,D.K. McAlpine,G.A.
Hmoeltlaoswoamya.lDS.7P.aSnadndSs8,.ASMca.le1,l4i,ne7s:(vaesnstorcailavtiedeww(iltehftehaalcfh)aspnedcideosr)sa=l0v.i5ewmm(r.ighthalf):2, 5, 8:lateralview;3,6,9:
WALKER
74 K,
Distribution. Cape York Peninsula and western Fronssmooth though covered with distinct tess-
Queensland. ellate pattern; vertex broad. Pronotum dorsola-
teral angles bluntly obtuse, well projected.
Remarks. The Hcathlandspopulationwasident-
Mesoscutum and scutellum smooth. Dorsal sur-
ified as //. forrestae after comparison of the face of propodeum not defined by carinae,
genitalia ofthe single new male with that ofthe
smooth except weakly ruguloso-striolate along
male holotype from western Queensland. The
posterior margin. Metasomal terga impunctate
female is described and figured here for the first and smooth. Fore and mid tarsal segments
time and its character suite confirms the flanged laterally; hind basitibial plate complete,
inferred sister-group relationship with //.
bluntly acute apically.
urbanus. Homalictus forrestae is most like H. Colour. Body black except metasoma dark
urbanus but differs with the female hind tibiae
brown, anterior half of clypeus pale white-yel-
slender, under surface scarcely concave and
low, antenna! scapes and pedicles red-brown,
anterior surface with hairs nearly simple, the
male flagellum length (urbanus Fg:UID > 1.5; legsandcoxae, trochantersand basal halfoffore
femorabrown, remainderoflegslightred-brown
./o/7V.vto'Fg:UID< 1.5)andmaleTl punctation
except tarsal segments pale white.
(urbanus. a sparsely punctures mesially;forres-
tae, closely punctate mesially). The female hind Vestiture. Body sparse except lower frons and
paraocular areas with cover of adpressed, plu-
tibial characters also occur on species of H.
mose hair, genae with dense cover oflong, plu-
(Papualietus) and H. (Quasilietus). However, I mose hair forming a "beard"; anterolateral cor-
consider Homalictus proper the correct place-
mentfor//.forrestaeasthehindtibialcharacters nmearrsgionfsomfepsrooscpuotduemu,mwmictthadneontsuemcoavnedroflaltoenrga,l
are the only characters shared, in both sexes,
with the other two subgenera. plumosegolden hair,posteriormarginofmesos-
cutum with weak band ofhair, fore coxae with
Homalictus (Homalictus) maitlandi (Cockerel!) some long, plumose hair, fore trochanters with
dense cover of long, plumose hair, hair length
Figures 7-9 exceeds length offemur; foreand mid tarsi with
llalictus maitlandi Cocke—rell, 1910: 223. dense cover of simple and plumose hair, mid
Hom—alielus maitlandi. Michencr, 1965: 180, and hind femora almost glabrous.
338. Walker, 1986: 145. Genitalia and associated sterna, (figs 7-9).
Materialexamined. Holotype9Qld,Cairns, Kuranda, Distribution. Cape York Peninsula and north
Mar 1902, Turner (BMNH). Queensland.
Other specimens examined: Qld. (69) same data as
holotype; 9 Mossman Gorge (16°29'S, I45°16'E), Remarks. Walker's (1986) comments on H.
1
Daintree Nat. Park. 26 Oct 1988, K. Walker(NMV); maitlandi were based on the only available
I9 Mellwraith Range, c. 510 m (I3°45'S, I43°2I'E), material (typescollected in 1902). Recently col-
2I92,-327kmJulEN1E9M7t7.ToRz.eWr.(1T2a°yl4o4r',Si,n Ir4a3i°n14f'oEre)s,t2(8AJNu1nC-)4; alencdtepdrosvpiedceimtehnesmcaolnefichramratchteerspseuciiteesdiesscerxitbaendt
Jkuml 1E98N6E,J.MCl.CTaorzdearle,(1e2x°.43M'aSl,ai1s4e3°t1r8a'pE()A,NI1C1)-;1629JuIIl and figured here. Examination ofthe malegeni-
1986. J.C. Cardale, ex. cthanol (ANIC); lrf Claudie talia characters affirms the placement of mait-
River. 1 miWMtLamond(12°43'S, I43°17'E), 19Dec landi within Homalictus and these characters,
1971, D.K. McAlpine. G.A. Holloway, D.P. Sands together with Hanged tarsal segment characters,
(AM). provide synapomorphies for the cladc of //.
Diagnosis. See Walker (1986). maitlandi, H. latitarsis(Friese) and H. grossope-
dalus Walker.
Description of male. Body length: 6.16 mm;
Forewing length: 1.48 mm; Head width: 1.62 Homalictus (Homalictus) pilosignya sp. nov.
mm. Relative head measurements: HW: 100;
HL: 85; UID: 58: LID: 42; AOD: 15; IAD: 10: Figures 10-12
OAD: 28; IOD: 16; OOD: 16; CL: 22; GW: 16; Material examined. Holotype. 9 Qld, Mellwraith
EW: 31; SL: 34: FL: 142. Range. 30 km E ofCoen (13°50'S, 143"17'E), 3 Nov
Structure. Head broad, inner orbits converg- 1988. K. Walker (NMV, T-16621).
ing strongly below, eyes glabrous; median Paratypes. 6y(NMV,T-16622-T-l6627), 3tf(NMV,
frontal carina absent; scape reaches anterior T-I6628-T-16630) same data as holotype.
margin ofmedian ocellus; clypeus convex, shin- Diagnosis. A member of the "blackburni"
ing though covered with fine reticulate pattern. species-group; female with frons smooth.
THE BEE GENUS HOMALKTIS 75
pronotum dorsolateral angles obtuse, mesoscu- Description of male. Body length: 3.92-4.62
tum sparsely to openly punctate, dorsal surface mm; Forewing length: 3.85-4.01 mm; Head
of propodeum mcsially coarsely ruguloso-stri- width: 1.29-1.34 mm. Relative head measure-
ate, laterally striate; male with mesoscutum ments: HW: 100; HL: 80-82; UID: 55-56; LID:
impunctate, dorsal surface ofpropodeum rugu- 34-36;AOD: 09-10; IAD: 1-12; OAD: 33-34;
1
loso-striolate, fore and mid leg tarsal segments IOD: 15-16;OOD: 1-12;CL: I6-I7;GW: 14-
1
laterally flanged, genal hairs long, fore leg tro- 15; EW: 32-34; SL: 28-30; FL: 160-163.
chanterswith densecoveroflong, plumose hair, Structure. Head broad, sculpture smooth,
lateral margins of fore tarsi with long hairs, with a fine reticulate pattern, frons. clypeus and
branched on only the outer surface of the hair supraclypeal area impunctate; innerorbits con-
shaft. verging strongly below; scape reaches well short
ofanteriormargin ofmedian ocellus. Pronotum
Description offemale, (measurements of holo- dorsolateral angles broadly obtuse to rounded,
type in bold) Body length: 5.62-5.69 mm; Fore- weakly produced. Mesoscutum and scutellum
wing length: 1.41-1.43 mm; Head width: 1.74- dull, microtessellate, both impunctate. Dorsal
1.79 mm. Relative head measurements: HW surface of propodeum not defined by carinae,
100;HL: 81-83;UID: 50-52;LID:46-47;AOD sculpture finely ruguloso-striolate, sculpture not
17-18; IAD: 8-09; OAD: 32-33: IOD: 13-14: reaching dorsal rim. Fore and mid leg tarsal
OOD: 12-13; CL: 17-18; GW: 15-16; EW: 25- segments laterally flanged.
26; SL: 45-46; FL: 82-83. Colour. Body black except antennal flagella
Structure. Head broad, inner orbits converg- suffused with dark brown; legs dark brown
ing below, median frontal carina absent; eyes except tarsi light red-brown.
with sparse cover of minute setae. Scape Vestiture. Body sparse except clypeus and
elongate, reaches at least posterior margin of lowerparaocularareaswithsomeerect,plumose
median ocellus. Clypeus weakly convex in side hairs, genal hairs long, forming a "beard", fore
view, anterior margin coarsely and irregularly leg trochanters with dense cover of long, plu-
indented, remainder of surface dull, covered mose hair, mid trochanters with some plumose
with sparse, minute puncture, supraclypeal area hair,though notaslongorcoverasdenseas ves-
impunctate. Frons, vertex and paraocular areas titureonforetrochanters,mesoventralareawith
smooth, covered with a microtessellate pattern, moderatecoverofsimplehair;lateral marginsof
sparsely punctate with piliferous punctures. foretarsiwith longhairs,branchedonlyonouter
Pronotum dorsolateral angles obtuse, weakly surface ofhair shaft.
projected. Mesoscutum surface dull, covered Genitalia and associated sterna, (figs 10-
with microtessellate pattern arranged asacircu- 12).
larpattern, openlytosparsely punctate with pil-
Distribution. Cape York Peninsula and north
iferous punctures. Scutellum sculpture similar
Queensland.
to mesoscutum except close to openly punctate.
scutellum lengthequaltolengthofdorsalsurface Etymology- Theepithet isfrom "pitosus" mean-
ofpropodeum. Dorsal surfaceofpropodeumnot ing hairy and "ignyd" referring to the upper
defined by carinae, sculpture mesially coarsely section ofthe leg.
ruguloso-striate, laterally striate, sculpture
reaches dorsal rim. Mesepisternum and mete- Remarks. Homalictuspilosignya shares with H.
pistcrnum smooth, with fine reticulate pattern. atrus fore leg vestiture (coxae and trochanters
Fore basitarsal outer apicolateral comb absent, with dense cover oflong, plumose hair and lat-
hind basitibial plate apically obtuse, inner hind eral marginsofforetarsi with long, simplehairs)
tibial spur coarsely serrate with 3 teeth. and the rasp-like sculpture on the apicoventral
Colour. Body black except antennal flagella surfaceofthegenitaliavolsellaebutdiffersinthe
brown, mesoscutum and scutellum sooty black, female mesoscutum and scutellum colour (pilo-
metasomatergum withdarkbluehue,legswith signya sooty black; atrusblack) and male vesti-
1
tarsi brown. ture (pilosignya with plumose vestiture on fore
Vestilure. Body sparse, except tomentosehair trochantersonly(atrusplumosevestitureonfore
onpronotum mesodorsalanddorsolateralareas, leg trochanters and all coxae), plumose hair
mesoscutum anterolaterally and anterior absent on the mesoventral area (atrus plumose
spiracle cover, lateral margins of propodeum hairpresent)and thehairsbranched on oneside
with long plumose hair; hind leg and ventral onlyofthelateral marginsofthe foretarsi (atrus
metasomal scopae as usual for the genus. hairs simple).
76 K. WALKER
llomalictus pilosignya belongs to a species- way to medianocellus; eyes with sparse coverof
group (termed "blitekburnF by Walker (1986) minute setae. Scape not reaching anterior mar-
for Australian species only and "buccinus" by gin ofmedian ocellus. Clypeus flat in side view,
Pauly (1986) for Australian and non-Australian anterior margin straight, surface dull, anterior
species) which contains over 50 species that half with densely punctate with large, shallow
occur in India, Sri Lanka, VietNam, Thailand, punctures, remainder openly punctate with
Malaysia, Indonesia, Philippines, New Guinea, small puncture, supraclypeal area impunctate.
Bismark Archipelago, Caroline, Bismarck and Fronsstriatetolevelofanteriormarginoflateral
Solomon Islands, the New Hebrides and Aus- ocelli, areaslateral tomedianocelli smooth, ver-
tralia(Pauly(1986)). This species-groupformsa tex longandbroad (IOD=vertexlength),striate,
monophylclic clade defined by several synapo- striae continue onto enlarged genae (fig. 14).
morphies (bolh sexes with apex ofmarginal cell Labium basal area with 2 large tubercles on
terminatingon wing margin, femalelackingfore either side of midline. Pronotum dorsolateral
basitarsal outer apicolateral comb absent, male angleslargeandacute. Mesoscutum surfacedull,
with genal vestiture long (forming a "beard"), covered with a fine reticulate pattern, impunc-
flanged tarsal segments, and coxae and/or tro- tate to sparsely punctate, remainder closely
chanterswith plumose and elongated vestiture). punctate except parapsidal areas densely punc-
Australian members of this clade (//. alms, H. tate. Scutellum shining, sparely to openly punc-
b/ackburni,11. cassiaejloris, 11. dampieri, 11. eur- tate, scutellum length longer than length of
bodopus, 11. grossopedaiis, 11. latitarsis, II. mait- dorsal surface ofpropodeum. Dorsal surface of
landiand //. pilosignya sp. nov.) occurthrough- propodeum not defined by carinae, dorsal rim
out the "Torresian" faunal province as defined rounded and shining, sculpture striate with sev-
by Main (1981), with the greatest species diver- eral interconnectives basally, lateral striae con-
sity found in north Queensland and Cape York tinue onto vertical surface. Mesepisternum and
Peninsula. metepisternum coarsely striate. Hind basitibial
Homalictus (Homalictus) vertkulus sp. nov. cpolaatreselaypicsaelrrlayterowuintdhed3,lairngneerteehtihn.d tibial spur
Figures 13-14 Co/our. Head dark blue/green, antennae
brown, mandible amber, mesoscutum semi-
Man-rial examined. Holotype. 9 Northern Territory,
12 km NNFofBorroloola(15"58'S, 136°21'E), Nov metallic blue/green, scutellum blue, propodeum
1975, J.C Oardale, on Terminalia volucris R.BIr, ex and metasoma black, legs brown.
Brenlh. (ANIC). Vestiture. Body sparse, except tomentose hair
Paratype. I9, NT, 22 km WSW of Borroloola on pronotum dorsolateral areas, and mesoscu-
(I6°08'S, 136*06'E), 2Nov 1975,J.C. Cardalc, caught tum anterolatcrally, lateral margins of propod-
in malaise trap. (ANIC). eumwith longplumosehair;hind legand ventral
Diagnosis. A memberofMic "urbanus" species- metasomal scopae as usual for the genus.
group; femalewith fronsstriate, innerorbitspar- Distribution. Borroloola region, Northern Terri-
allel to weakly diverging below, vertex long and tory.
(brGoWad1.(3IOxDEW=),veprrteoxnolteungmthd)o,rsgoelnataeeraelnlaanrggleeds Eintgymtoopl,ogayn.dThreefeerpsitthoetthies ufnruosmua"vlerntaet.u\r\emoefatnh-e
large and acute, mesoscutum posterior half vertex.
closely punctateexcept parapsidal areasdensely
punctate, dorsal surface of propodeum striate Remarks. Homalictus vertkulusshares enlarged
with several basal inlerconncctives. headcharacterswith //. ctenanderMichencrbut
differs markedly in head, mesoscutum and pro-
tDyepsceriinptbioolnd)ofBofedmyallee,ngt(hm:e4a.s8u5r-e5m.e0n1tmsmo;fFhoorleo-- pmoosdteulmiksecu/l/.ptuItroelpoacthltoerrunssa(nCdocbkeordeyllc)oloiunr.heItaids
wing length: 1.05-1.06 mm; Head width: 1.53- sculpture characteristics, body size and colour
1.65 mm. Relative head measurements: HW- but differs in the female by enlarged vertex and
211280-0-:2139H;;LIC:LA:D8:01-958--111;60;;UOGIAWDD:::623165--;6227I;;ODEL:WID:1:72-061;28;;SLOA:OO3D9D-- c(guaelcnuuaste,e, dpmircsostamilaillnyl)ey,ntmceplsorosoesnlcyouttupumumndcotpraustnoecl,taattepiraoarlnapa(snviegrdltaeils-
40; FL: 72-74. areas densely punctate; Iwlochlorus mesially
Structure. Head broad (fig. 13), inner orbits openly punctate, parapsidal areas closely punc-
parallel toweakly diverging(in holotype)below, tate) and sculpture on the propodeum (verticu-
median frontal present, extends less than half- lus, striate; holocfi/orus. ruguloso-striolate).
THE BEE GENUS HOMAUCTVS 77
Subgenus Papualictus parallel below, median frontalcarinawelldevel-
Homalntus {Papualictus) Michencr, 1980: 8. Type oped, reaches half way to median ocellus. Cly-
species: Homalictux megalochilus Michcner, 1980: 8 peus smooth and shining, short and transverse,
(by original designation) - Homalictux hrcntzi almost all of clypeus positioned above lower
(Fricse). synonymy by Pauly (1986). marginsofeyes, apical truncation concave, only
Diagnosis revised from Michener (1980). Both about one-fifth aswide asclypeus, antcromesial
sexes with frons, vertex and genal area coarsely margin elevated as a large, rounded, forwardly
projected rounded smooth shining boss, under-
striate; frontal carina present between antennal
neath boss clypeus strongly concave, epistomal
bases; females with hind tibiae slender, not
scarcelyconcavebeneath,with hairofoutersur- suture lateral to tentorial pit horizontal. Supra-
face sparse and simple; males with head much clypealareaweaklyelevated,covered witha fine
broader than long (HW at least 1.2 x HL), cly- reticulate pattern. Frons coarsely striate above
antennal bases, sculpture continues to level of
peus low and transverse, about five times as
wide as long, apical truncation concave, episto- anterior margin of lateral ocelli, laterally con-
tinuesalmost to innermargin ofeye. Mandibles
mal suture lateral to tentorial pit horizontal,
mandibles enlarged and sickle shaped, shifted shiftedposteriorlysothatanteriorarticulationis
well behind lower inner margins of eyes, pos-
slightly posteriorly so that a triangular malar
terior articulation of mandibles shifted poster-
space is formed, pre-episternum elevated to iorlytowell behind loweroutermarginsofeyes,
form a rough vertical ridge.
the shifted posterior mandibular articulation
formsa small triangularmalarspace; mandibles
Homalictus (Papualictus) megagnathus sp. nov. elongated and sickle-shaped, longer than lower
Figures 15-19 interorbital distance, apex ofmandible rounded
and weakly upturned, pollex absent. Labrum
Materialexamined. Holotypc. <s, Qld, Mt Webb Nat. with rounded boss across the entire basal area,
Pk (15"04'S, I45°07'E), 27-30 Apr 1981, I.D. Nau- distally labrum rounded. Genal width, in side
mann(AN1C;Genitaliaremovedandplaced invialon view, subequal to eye width, each gena with a
pin).
I4P3°a1r7a'tEv)p,es5.-Q1l0d:Jullrf,19986k,mJ.EC.NECarMdtalTco,zeatrM(1V2°4l3i'gSh.t spirnogcleesslar(fgieg,. t1r6a)n,svperrosceelsysebsrooardi,gilnaatmeelolna-suhnadpeerd-
(ANIC);l93kmENEMtTozer(12°44'S, 143°14'E),28 side ofgenae slightly behind level of posterior
Jun-4Jul 1986,J.C. Cardale,ex. Malaisetrap/ethanol mandibulararticulation. Vertex broad and stri-
(ANIC). ate, slightly wider than interocellar distance.
Pronotum dorsolateral^ rounded, in side view
Diagnosis. Female with frons, vertex and genae
lateral margin with distinct carina extending to
coarsely striate, anterior surface of hind tibia
dorsolateral angle. Pre-episternum, forward of
withhairsnearlysimple,bristlelikeorwith 1 or2 pre-episternal groove, elevated to form rough
branches (no area with abundant, short, erect,
verticalridge;mesepisternum,abovepleural sig-
plumose hairs as is usual for the genus); hind num, rounded and smooth; venter of mesepis-
tibiae slender, under surface scarcely concave;
ternum without transverse ridge behind front
malewith head broaderthan long, clypeusshort coxae. Mesoscutumanterolateral marginsraised
and transverse, apical truncation concave, ante-
forminga lip, mesiallylipabsent, anteriorlydull
romesial margin elevated asa largeboss, under-
and impunctate, covered with a fine reticulate
neath boss clypeus strongly concave, mandibles
pattern, mesially and laterally shining though
elongated and sickleshaped, shifted posteriorly; mesial area finely striate and openly punctate,
each gena with a large lamella-shaped process. parapsidal areas with a fine broadly reticulate
Description ofmale, (measurements ofholotype pattern, sparsely punctate. Scutellum smooth
in bold) Bodv length: 3.93-4.24 mm; Forewing and highlypolished, sparselypunctatewith min-
length: 0.66-0.68 mm; Head width: 1.27-1.29 utepunctures. Dorsal surfaceofpropodeum not
mm. Relative head measurements: HW: 100; defined by carinae, smooth and polished except
HL: 70-72; UID: 62-64; LID: 61-62; AOD: 20- a few weak, short striae basally. Metasomal Tl
21; IAD: 11-12; OAD: 31-32; IOD: 16-18; highlypolished and impunctateexcept fora few
OOD: 20-21; CL: 10-12; CW: 54-56; GW: 21- minute punctures, T2-T5 shining and impunc-
22; EW: 23-24; SL: 37-38; FL: 92-94; ML: 62- tateexcept basallyeachtergitcwithseveralweak
64. transverse lines. Fore basitarsal comb fan
Structure. Head broader than long (fig. 15), shaped: hind basitibial plateweakly present and
inner orbits weakly converging below to almost apically acute.
WALKER
78 K.
14
Figures 10-16.Homalktusspp.//.pilosignya(paratype):malegenitalia,fig. 10,ventralview(lefthalf)anddorsal
view(righthalf);fig. 11,lateralview;fig. 12,metasomalS7andS8.//. verticulus(holotype):figs 13-14,headfront
and lateral views respectively. H. megagnathus(holotype): figs 15-16. head frontand lateral viewsrespectively.
Scale lines (associated with each species) = 0.5 mm.