Description of a new species of Heteroclinus (Blennoidei: Clinidae) from southern Australia

2006·2.4 MB·English

by  Douglass F Hoese

MemoirsofMuseumVictoria63(1):21-24(2006)
iSSN 1447-2546(Print) 1447-2554(On-iine)
http://www.museum.vic.gov.au/memoirs/index.asp
Description ofa new species ofHeteroclinus (Blennoidei: Clinidae) from southern
Australia
By Douglass F. Hoese^ andDenise S. Rennis^
'FishSection,AustralianMuseum,6CollegeSt.,Sydney,NSW2010,Australia([email protected])
^FollyBeach,SouthCarolina,U.S.A.
Abstract Hoese,D.FandD.S.Rennis2006.DescriptionsofanewspeciesofHeteroclinus(Blennoidei: Clinidae)fromsouthern
Australia.MemoirsofMuseumVictoria63(1):21-24.
A new species ofHeteroclinus is describedfromVictoria, SouthAustraliaandWesternAustralia. Thespecies is
distinctivefrom otherAustralian clinids inhavingtwo well-developed segmentedpelvicrays, firstdorsal fin onhead
originatingjustbehindoratposteriorendofeye,areducedlaterallineandinfin-raycounts.
Keywords Fish,Blennioidei,Clinidae,Heteroclinus,newspecies
Leviton et al. (1985). The number of specimens is given
following the registration number and the size range in mm,
standard length is given in parentheses. The dorsal-fin ray
Introduction
count is partitioned into three parts, anterior first dorsal fin
Clinidfishesrepresentoneofthemostspeciosegroupsoffishes (separate, or connected basally to the second dorsal fin),
fromsouthernwatersofAustralia. Over35speciesareknown, seconddorsalspinesanddorsalsegmentedrays(partofsecond
withonlythreeextendingtothetropicsorsouthernpartsofthe dorsalfin). Circumorbitalporecountincludesporesincontact
tropics.GeorgeandSpringer(1980)reviewedthespeciesofthe withorimmediatelyadjacenttotheeyeandincludesallpores
tribe Ophiclinini. Hoese (1976) described one new species of intheinfraorbital series.
Heteroclinusandreviewedthehistoricalstudiesofclinidfishes
ofAustralia. Rennis etal. (1994) placedthetemperate species HeteroclinusCastelnau, 1872
ofthetribeClininiintothe HeteroclinusandCristiceps.
The description provided here forms part ofa revision ofthe Heteroclinusadelaidaecomplex
remainingclinidfishesofAustraliaandcontrastsallthespecies
Members of the Heteroclinus adelaidae complex, which
intheHeteroclinusadelaidaecomplex.
CurrentlythreegeneraofthetribeClininiareknownfrom includes H. adelaidae, H. macrophthalmus and the species
Australia: Springeratus, withasinglespecies, Cristicepswith describedbelow,allhaveonlytwodevelopedsegmentedpelvic
threeandHeteroclinuswith25species.Furtherstudiesonthe rays andtheanal finbroadlyconnectedbymembranetoabout
relationships within the group may alter the generic themiddleofthecaudalpeduncle.
classification. One species {Heteroclinusflavescens found in
southern Australia and New Zealand) has been regarded as Heteroclinuskuiteri,sp.nov.
belongingtothe separate genus Cologrammus. Moredetailed Figures 1-3
information on relationships will be included in ourrevision
ofthegenusHeteroclinus. Heteroclinussp. 1: Rennis,Hoese&Gomon, 1994: 746,fig. 652
(southernAustralia);Hutchins,2005(WesternAustralia)
Methods Heteroclinusspecies2:Hutchins, 1994: (WesternAustralia)
Materialexamined.Holotype:AMS1.19777-009,a44mmSLmale,
CountsandmeasurementslargelyfollowthosegivenbyHubbs PortseaPier,PortPhillipBay,Vic.,R.Kuiter,12Apr,1977.Paratypes.
and Lagler (1958). The last anal ray and last dorsal ray are Vic.: AMS 1.19921-009, 1(41), Port Phillip Bay, R. Kuiter, 30 Jul,
separate, not branched and are counted as separate rays. In 1977;AMS 1.19775-002, 1(42),Portsea,PortPhillip Bay,R. Kuiter,
lists of material examined, institution abbreviations follow AMS 1.19776-005,3(46-49),FlindersPier,R. Kuiter, 13Apr, 1977;
22 DouglassF. HoeseandDeniseS. Rennis
Figure 1.HolotypeofHeteroclinuskuiteriAMS1.19777-009,a44mmSLmale.Photoisoftherightsideandreversedtobettershowthefins
(tipofdorsalfinhiddenonleftside)andallowcomparisonwithotherspecimens,photographedseveralyearsaftercollection.
Figure2.MaleparatypeofHeteroclinuskuiteri,AMS1.19777-006,39mmSLmale,photographedafewweeksaftercollection.
DescriptionofaNewSpeciesofHeterodinus(Blennoidei:Clinidae)fromSouthernAustralia 23
scales from end of head to above middle of pectoral fin
overlapping with a single median posterior pore, posteriorly
lateral line scales separate with a median pore at each end.
Circumorbital pores uniserial (12-17 pores). Orbital tentacle
short (1.3-4% SL), with rounded margin, sometimes with
minutelaterallobes.Nasaltentacleelongate,spoon-shaped. 1st
dorsalfinelevated,higherthan2nddorsalfin;2nddorsalspine
usually longest (6.1-13.9% SL, in females, 12.6-16% SL, in
males), 1st spine rarely the longest; 1st dorsal fin originating
overorjustbeforeposteriormarginofeye,posteriorendoffin
connected by membrane to basal one-quarter to half of 2nd
dorsal fin. Pterygiophores from 1st dorsal fin in groove on
skull. All dorsal spines followed by fleshy flaps bound in
interspinalmembraneextendingfromtipsofspines.Lastdorsal
raysevenlyspaced,membranefromlastrayconnectedtoupper
base of caudal fin at end of caudal peduncle. Last anal ray
broadly connected by membrane to just beyond middle of
caudal peduncle. Pelvic rays thin (a 3rd rudimentary ray
sometimespresent,visibleonlyondissection),2ndrayreaching
toabouttheanus.Gillrakersonouterfaceof1starchshortand
pointed. Body slendertomoderate (depth atanal origin 16.2-
20.3% SL). Oftenwithbroaddarkstripeonmidside.
Description.1stdorsalIII(34*);2nddorsal-finspinesXXIX(6),
Faingdupraer3a.tHypeeasdsohfoHweitnegrdoidsitnriubsutkiuointeorfi,hceoamdppoosrietse.bNaosteedtohanthoonlloytytphee XXX(17), XXXI(10*), segmented dorsal rays 2(4), 3(27*),
upper5pectoralraysshown. 4(3); anal fin-rays II, 21(1), II, 22(13*), II, 23(18), II, 24(2);
pectoralfin-rays12(30*),13(4);pelvicrays1,2(34*);segmented
caudal rays 10(2); 11(31*) vertebrae 14+28(6), 14+29(7),
14+30(1), 15+29(1). Circumorbital pores 12(1), 13(5), 14(9*),
A00M1,S21(.4179-76707)-,00P6o,rt3(P3hi4l-l3i8p),Bacyo,llRe.ctKeuditweirt,h1h9o8l1o;tyApeM;SAM1.S2410.5214-005001-, 61(54()7,),7(166)(,1)8,(1158*()1,);9(t2o)t;allgoiwlelrragkilelrsraoknersoutoenrofuatceeroffac1estofar1csht
AMS arch5(7), 6(18*),7(2). Poredlateral-line scales 19-25(arched
1(58),PortPhillipBay,R.Kuiter, 1981; 1.24218-001,4(39-53),
Port Phillip Bay, R. Kuiter, 6-9 Jun, 1976; NMV A.2603, 1(41), portionofline)+0-15(straightportionofline);anteriorlateral
Refuge Cove, 5 m, G. Poore & H. Lew-Ton, 9 Feb, 1982; NMV line scales 19(4), 20(3), 21(4), 22(8), 23(1)1, 24(3*), 25(4);
A.2604,1(35),southheadland.RefugeCove,5m,G.Poore&H.Lew- posterior lateral line scales 0(2), 2(2*), 3(2), 4(3), 5(1), 6(1)
Ton, 10Feb, 1983;NMVA.2606, 2(41-44),southheadland.Refuge 7(2), 8(1), 9(1), 10(3), 11(2), 12(4), 13(1), 14(2), 15(1);
Cove, 13 m, C. Larsen, T. Cochran and R. Wilson, 10 Feb, 1982; branchiostegal rays 6(14*). Vomer with single row of teeth
NMVA.2607, 1(42),southheadland.RefugeCove, 13m,C.Larsen, formingaV;palatinewithoutteeth.
T. Cochran & R. Wilson, 10 Feb, 1982; NMVA.2608, 1(48), south Headcompressed,moderatetolarge(27.2-30.4% SL,34-
headland.RefugeCove,13m,C.Larsen,T.Cochran&R.Wilson, 10 37 mm, 23.2-27.7% SL, 38-61 mm); snout obtusely pointed,
Feb, 1982; NMV A.35N77M,V1(45), Portsea, Port Phillip Bay, 5 m, B. snout less than eye diameter, (3.6-6.3% SL), eye (6.9-9.7%
Ruffle, 12Mar, 1984; A.3579, 1(36),offStonyPoint,Western SL), interorbital narrow, about half to three-quarters eye
P611o99Sr66et78p;B,WaZy1AM9,:1U41.6WCSmA.(AuMFnNicsPaMht.eVa2rl5io7Aeg6s.u74e-a9d0n8)1d,,0,W41i((3l64(d443l)-8,i5-f2P4e)o7,rD)te,WpLeSaisarntcnteodmrleynnn,HtPoJo.r“otCV,akepiTrtL.e,slcMlRhoa,er”ct,1he6en1rDsJceeuhcnn,e,, udsipiampmpeelrteejran;wasmalolenugtttehhn,tsah9col.re3t;-,1pj3oa.sw2ts%erriSeoLar;chnaionsnttgerritiloorwbientolshotwreilmleivtdaudtbleuedlaorrfiwmeiyteah,t
Archipelago,J.B.Hutchins, 10Apr, 1977;WAMP.26599-004,4(34- anterodorsal marginofeye; gillrakersvery shortand simple;
48),CosyCorner(34°15'S, 115°01'E),J.B.Hutchins, 11Apr, 1980. rakers on 2nd and following arches moderately developed;
tongue tip broadly rounded; upper jaw with outer row of
Diagnosis.DorsalfinsIII,XXIX-XXXI,2-4(usually3);anal conical teeth, slightly enlarged extending to near end of
II,21-24(usually22-23);segmentedcaudalrays10-11(usually premaxilla;anteriorly3-4innerrows ofsmallerconicalteeth
11);pectoralrays12-13 (usually12);pelvicraysI,2(sometimes taperinglaterallyto1row,endingaroundmiddleofpremaxilla;
with basal element of a rudimentary 3rd ray only visible on lowerjawwithouterrowofconicalteethenlargedcoveringall
dissection); gillrakers onouterface of 1starch,l-2-i-5-7=6-9 ofdentary;2or3innerrowsofsmallerteethtaperinglaterally
(usually 7-8). Lateral line composed of an arched section to a single row ending before middle ofdentary; intromittent
above pectoral fin curving to midline behind pectoral fin and organelongate,pointedandcurvedforwardasinHeterodinus
continuing horizontally along midline of body; posterior macrophthalmusfiguredbyHoese(1976).
straight portion oflateral line reduced, lateral line scales not Headporesasshowninfig.3,circumorbitalandpreopercular
extending beyondmiddle ofanal fin; anteriormostlateral line poresuniserial.
24 DouglassF. HoeseandDeniseS. Rennis
Headlargelynaked,bodyscalessmallandcycloidextending 12-13 and one has 12-12. Only one other specimen was found
forwardtoaboveoperculumbelowendof1stdorsalfin; scales with13pectoralrays.
overlapping and forming distinct rows anteriorly, becoming Heteroclinus kuiteri is most similar to H. adelaidae
nonimbricateandirregularposteriorly. Castelnau and H. macrophthalmus Hoese, in having the last
1st dorsal fin elevated, abouttwice height of2nd dorsal in anal ray broadly connected by a membrane to the caudal
males and slightlyhigherthan2nddorsal infemales; 2nd spine peduncle, two slender and elongate pelvic rays and often a
usuallylongest,with 1stand 2nd spines subequal inheightand rudimentary third pelvic ray, visible only upon dissection.
longerthan3rdspine;membranefrom 1stdorsalfinconnectsto Heteroclinus kuiteri differs from H. macrophthalmus in
body atbase of2nd dorsal fin; 2nd dorsal origin above apoint lackingfreefilamentsextendingoffthefirstfewdorsal spines
before pectoral origin and behind pelvic insertion; 1st spine of (free and branched in H. macrophthalmus), simple orbital
2nd dorsal short, spines becoming progressively longer tentacle (versus tentacle branched with five lobes) and fewer
posteriorly, with last spine the longest; dorsal segmented rays dorsal rays (two-four, versus usually five). Heteroclinus
evenlyspaced;analoriginbelow11thor12thspineof2nddorsal
kuiteri differs from H. adelaidae in having more numerous
pfirno,garneaslsisvpeilnyeslosnhgoerrt,poasntaelrisoerglmy;enctaeuddarlayfisnlwointgherroaunnddebdecmoamrignign pectoralrays 12-13(versus 11),dorsalfinoriginoverorbefore
posterior margin of eye (versus over posterior preopercular
(16.3-19.2% SL); pectoral fin with rounded margin, rays
margin), with pterygiophores in groove in skull (versus
unbranched,centralrayslongest,reachingtoaboveorjustbehind
anus;pelvicfinswithhiddenspine,2developedraysandusually pterygiophores behind skull) andno blackline along anterior
a3rdrudimentaryrayvisibleonlyondissection. lateralline(versususuallypresent).
Coloration offreshly collected material. (Based on colour Acknowledgements
photos providedby R. KuiterfromVic. andB. Hutchinsfrom
WA). Colour variable. Sometimes with head, tail, and dorsal WethankGregoryMillenforthephotographoftheparatype.
portionoftrunkdarkwithabrownandwhitemottledmidlateral PhotosandmaterialofthisspecieswereprovidedbyR.Kuiter
band extending posteriorly from eye across upper half of and B. Hutchins. We thank B. Hutchins and M. Gomon for
preoperculum and operculum, along trunk, and breaking into loanofmaterial.
oblong patches ontail; females and some males brownwith 8
dark-brown irregularly shaped vertical bars across trunk and References
tail extending onto dorsal and anal fins, bars often broken
formingirregularsaddle-shapedspots,thosealongbackdarkest; Castelnau,F.L.de 1872.ContributiontotheichthyologyofAustralia.
some males and females with body uniform brown or lightly 2. Note on some South Australian fishes. Proceedings ofthe
mottled; 1stdorsalfinblack;femaleswith 1stspinesometimes ZoologicalandAcclimatizationSocietyofVictoria 1: 243-248.
banded;caudalandventralfinspale,usuallywithaseriesofred George,A. and Springer, V.G. 1980. Revision ofthe clinid fishtribe
spotsformingtransversebands; snoutandedgesofinterorbital Ophiclinini,includingfivenewspecies,anddefinitionofthefamily
frequently white; lower half of head with large black spots, Clinidae.SmithsonianContributionsinZoology.307: 1-31.
large dark spot often present basally on pectoral rays 8-10; Hoese, D.F., 1976. A redescription of Heteroclinus adelaidae
females with belly, ventral portions of tail and midlateral Castelnau(Pisces:Clinidae),withdescriptionofarelatedspecies.
portionsoftrunkandtail sometimeswithwhitespots. Australian.Zoologist19(1): 51-67.
Hubbs, C.L, andLagler, K.F 1958. Fishes ofthe GreatLakes region.
Coloration inalcohol. Similartofresh coloration, exceptthat CranbrookInstituteofScience:BloomfieldHillsMichigan213pp.
pigmentlessintenseandredbecomingpalebrown. Hutchins,J.B.,1994.AsurveyofthenearshorereeffishfaunaofWestern
DESisAspterarianbnducteiC,oonWs.yAT.hCoIetrinsseprae,scsioencseiaairtseAkdlnwboiatwnhnyrfoacrnkodsmaSVnaidcn.ad,lygPaoHerotionLksihnIac.lolloonfw,f HutcAAhtuhrisenctshWr,iaeplsJiet.aleB’ar.sg,nwoAe2uas0snt0td5ra.analddiCjashanoecuceMtknuhltiscmsoeatauisntmoslfSa-unmtpdahprewliLaentemeeeerunfswtisiiNhnn:eos.PWre4ool6vfl:isnt,1ch-eeF6..6ER.R.e,eccWhoareldrkscehroe,f
waterfromdepthsof5-13 m. D.I. and Kendrick, G.A. (eds). The Marineflora andfauna of
Etymology.NamedforRudieKuiter,whoprovidedmuchofthe Esperance, WesternAustralia.WesternAustralianMusem:Perth.
typematerialandvaluablematerialofotherAustralianclinids. Rennis,D.,Hoese,D.F. andGomon,M.F 1994. Family Clinidae. Pp.
741-775,figs650-684in: Gomon,M.F.,Glover,C.J.M.&Kuiter,
Remarks. One samplefromWestern Port, Victoria(ZMUC) is R.H.(eds)TheFishesofAustraliasSouthCoast.Adelaide:State
unusual inthatone specimenhas 13-13 pectoral rays,twohave Printer992pp.