Occurrence of the Genus Shiva (Coleoptera, Nanophyidae) in Taiwan,with Description of a New Species

2009·0.52 MB·English

by  Kantoh, J

Elytra,Tokyo,37(1):165(cid:1)170,May29,2009
Occurrence of the Genus Shiva (Coleoptera, Nanophyidae)
in Taiwan, with Description of a New Species
Junnosuke KANTOH and Hiroaki KOJIMA
LaboratoryofEntomology,TokyoUniversityofAgriculture,
1737Funako,Atsugi,Kanagawa,243(cid:1)0034Japan
Abstract A new species of the genus Shiva in the family Nanophyidae is
described from Taiwan as the first and easternmost species of the genus other than
IndiaunderthenameShivataiwanussp.nov. Thisnewspeciesischaracterizedbytheir
maculation and coloration as well as the asymmetrical pedon of aedeagus at apex
amongthecongeners. ItmaybeconfusedwithNanophyesformosensisKˆDCDbytheir
superficialresemblanceandcoexistenceontheflowerbudsofLagerstroemiasubcostata
ofthefamilyLythraceae.
Anumberofadultnanophyidweevilswerecollectedontheflowerbudsofa crape
myrtle,LagerstroemiasubcostatainTaiwan. Theyareeasilyrecognizedtobeamixture
ofseveralspeciesbytheirdi#erentcolorationfromfulvoustofuscous,sizesandoutlines.
Amongthem,thefulvouscolouredspecieswereinitiallyidentifiedwithasinglespecies,
Nanophyes formosensis KˆDCD, 1930 (Figs. 5, 6) by their coloration and maculation.
Later,itbecameclearthatthemixturesofthetwospeciesbelongingtodi#erentgenera.
The other species represents a new species belonging to the genus Shiva P6?C> et
B=6I:?6,1982. ThegenusShivaisdefinedby the following characters: antennae with
funicle6-segmented,clubformedofthreeloosesegments,eyesapproximated,separated
linearly, 8th elytral interval shortly crenulate distad of humeral callus, which is well
developed,andintermesocoxaldistancesubequaltointermetacoxalone. Occurrenceof
the genus in Taiwan is interesting as the first record other than India and the eastern-
most one in the range.
AllthespecimensexaminedaredepositedattheLaboratoryofEntomology,Tokyo
University of Agriculture unless otherwise mentioned.
Shiva taiwanus sp. nov.
(Figs.1(cid:1)4,7(cid:1)17)
Male. Length: 2.0(cid:1)2.3mm; pronotal width: 1.0(cid:1)1.2mm; elytral width: 1.2(cid:1)1.4
mm.
Dermyellowishtoreddishbrown;head,rostrumatleastbehindantennalinsertion,
sides of pronotum, and basal keels of pronotum and elytra more or less fuscous; elytra
166 JunnosukeK6CID=andHiroakiKD?>B6
Figs.1(cid:2)6. Habitus photographs of Shiva taiwanus sp. nov. and Nanophyes formosensis KˆDCD (1(cid:2)4,
Shiva taiwanus; 5, 6, N. formosensis).(cid:1)(cid:1)1, Female, dorsal view; 2, ditto, lateral view; 3, male
(holotype),dorsalview;4,ditto,lateralview;5,male,dorsalview;6,ditto,lateralview.
often fuscous along suture and lateral margin, with dark brown to fuscous basal
triangular band and irregularly small patches behind middle; venter with meso- and
metathoraces more or less darkened, ventrite sometimes darkened partly; legs pale
brown except fuscous apices of tibiae, tarsi and denticles of femora, tibiae and femora
eachoftenwithdarkfascia. Vestitureofwhitetoyellowishwhiteelongatescalesslightly
condensed on base of 2nd elytral interval and sides of pro- to metathoraces and
procoxae; elytra with fuscous hairs in dark areas. Specialized erect setae present on
pronotum, odd intervals of elytra, femora and tibiae.
Head:(cid:1)Forehead between eyes narrow, with row of scales on each side along
innermarginofeye. Rostrumnearlyaslongaspronotum. Antennae(Fig. 9) inserted
a little beyond middle of rostrum; scape nearly as long as funicle plus 1st segment of
club;funiclewith1stsegmenttwiceaslongaswide,2nd3/5timesaslongas1st,3rdto
OccurrenceofShivainTaiwan 167
Figs.7(cid:2)10. Shiva taiwanus sp. nov.(cid:1)(cid:1)7, Head, male; 8, ditto, female; 9, antenna; 10, legs
(trochanters,femoraandtibiae)andvariationoffemoraldenticles,male.Scale(cid:1)0.2mm.
6th subequal in length, a little shorter than 2nd, 5th slightly asymmetrical; club nearly
as long as funicle, 3rd segment slightly longer than 1st and 2nd segments combined.
Thorax:(cid:1)Prothorax0.5(cid:2)0.6timesaslongaswide. Elytra1.1(cid:2)1.2timesaslongas
wide. Legs (Fig. 10) with femora each with long proximal and two, sometimes three
smaller distal denticles; all tibiae mucronate, although mucro di$cult to see on hind
tibia.
Male terminalia:(cid:1)Tegmen as in Figures 11, 12; tegminal plate nearly as long as
apodeme plus ring; parameloid lobes short, separated by median notch, each lobe with
single marginal row of 10(cid:2)13 long setae. Aedeagus (Figs. 13 & 14) with pedon
asymmetrical,curvedrightwards distally and downturned at tip; tectum approximately
halfwidthofpedon. Apodemesandaedeagalbodysubequalinlength. Internalsacwith
curved sclerite; flagellum very long, nearly twice as long as aedeagal body; lateral lobe
168 JunnosukeK6CID=andHiroakiKD?>B6
Figs.11(cid:1)17. Shiva taiwanus sp. nov.(cid:2)(cid:2)11, Tegmen, dorsal view; 12, ditto, lateral view; 13,
aedeagus,dorsalview;14,ditto,lateralview;15,internalsac,distended,dorsalview;16,tergite8,
sternite8andspiculumgastrale;17,spermatheca.Scale(cid:1)0.2mm.
(Fig. 15) found when distended. Spiculum gastrale (Fig. 16) with a pair of lobes
anteriorly on the plate and apodeme asymmetrically curved.
Female. Length: 2.2(cid:1)2.5mm; pronotal width: 1.1(cid:1)1.3mm; elytral width: 1.4(cid:1)
1.5mm.
OccurrenceofShivainTaiwan 169
Similartomaleexceptrostrumslenderandthinnerbeforeantennalinsertion,which
is just beyond middle of rostrum, and tibiae not mucronate. Spermatheca (Fig. 17)
simply C-sharped.
Etymology. This species was named after the locality.
Typeseries. Holotype,(cid:1),Fenshuiling,ManchouHsiang,PingtungHsien,Taiwan,
29(cid:1)V(cid:1)2006,J.K6CID=leg.Paratypes:1(cid:1),Koshun(paratypeofNanophyesformosen-
sis,NSMT-I-C(cid:1)26437;NationalMuseumofNature and Science, Tokyo). 5(cid:1)(cid:1), same
data as the holotype. 4(cid:1)(cid:1), 3(cid:2)(cid:2), same locality as the holotype, 30(cid:1)V(cid:1)2006, J.
K6CID= leg.; 1(cid:1), 1(cid:2), 30(cid:1)V(cid:1)2006, T. THJGJ leg.; 8(cid:1)(cid:1), 5(cid:2)(cid:2), 31(cid:1)V(cid:1)2006, J.
K6CID=leg.2(cid:2)(cid:2),KentingPark, Taiwan, 24(cid:1)26(cid:1)V(cid:1)1975, S. IB6H6@6 leg.; 1(cid:1), 27(cid:1)
III(cid:1)1976,M.IIDleg.1(cid:1),Chihpen-wenchuan,PeinanHsiang,TaitungHsien,Taiwan,
1(cid:1)VI(cid:1)2006, J. K6CID= leg.; 5(cid:1)(cid:1), 2(cid:2)(cid:2), 4(cid:1)VI(cid:1)2006, J. K6CID= leg.; 3(cid:1)(cid:1), 1(cid:2), 5(cid:1)
VI(cid:1)2006, J. K6CID= leg., 1(cid:2), 27(cid:1)29(cid:1)III(cid:1)1995, H. KD?>B6 leg. 1(cid:1), Nanshanchi,
Taiwan,13(cid:1)IV(cid:1)1975,S.IB6H6@6leg.;1(cid:1),30(cid:1)31(cid:1)V(cid:1)1975,S.IB6H6@6leg.;1(cid:1),13(cid:1)
VI(cid:1)1976, M. IID leg.; 1(cid:2), 5(cid:1)V(cid:1)1979, K. EBDID leg. 1(cid:1), 1(cid:2), Wulai, Taipei Hsien,
Taiwan,14(cid:1)IV(cid:1)1995,H.KD?>B6leg.1(cid:2),LiougueiHsiang,KaohsiungHsien,Taiwan,
3(cid:1)VIII(cid:1)1976, K. M6IHJ96 leg.
Distribution. Taiwan(Taipei,Nantou,KaohsiungTaitung,andPingtungHsiens).
Biological note. Weevils were captured on the flower buds of Lagerstroemia
subcostata (Lythraceae) with several other nanophyid species.
Discussion
Six Shiva species have been known only from India to date. Occurrence of the
genus in Taiwan becomes the most easterly record in the range. With regard to the
interspecific classification of the genus, AADCHD-Z6G6O6<6 (1990) tentatively divided
itintothreespeciesgroupsbasedonthemalegenitalstructure. Thepresentnewspecies
seeminglybelongstothevariabilisgroupinhavingthetegmennotchedapicallyandthe
longflagellum. However, this species is unique in having the asymmetrical apex of the
pedonoftheaedeagusandverylongflagellumnearlytwiceaslongastheaedeagalbody.
Themaculationandcolorationalsodi#erfromthoseoftheotherspeciesofthevariabilis
group.
This species is also easily confused with Nanophyes formosensis sometimes coexist-
ingonthesameplant. Examinationofthe type series of N. formosensis revealed to be
amixtureoftwospecies and the paratype kept in the National Museum of Nature and
Science,TokyoisidentifiedwithShivataiwanus. Inparenthesis,thespeciestreatedand
figuredbyMDG>BDID(1964)asN.formosensisandAADCHD-Z6G6O6<6(1989)asthe
typespeciesofthegenusPsix,whichwasrenamedZherikhinia(AADCHD-Z6G6O6<6&
LN6A, 1999) is based on misidentification (K6CID=, in prep.).
Though no biological information has ever been known for the genus, Lagerstroe-
miaspecieswillbecomeagoodplacetolookforthebiologyofthisspeciesaswellasthe
other species possibly occurring in the intervening area of the range.
170 JunnosukeK6CID=andHiroakiKD?>B6
Acknowledgments
We thank Drs. K. MDG>BDID (Kyushu University Museum, Fukuoka) and H.
YDH=>I6@: (National Institute for Agro-Environmental Science, Tsukuba) for their
valuablecomments. ThanksareduetoDr.S.O@6?>B6(TokyoUniversityofAgricul-
ture) for his encouragement, Drs. S. NDBJG6 (National Museum of Nature and
Science,Tokyo)andM.«O=6G6(HokkaidoUniversityMuseum)fortheirkindhelpto
checkthecollections,andMr.T.THJGJandthelateMr.K.EBDIDfortheirdonation
of the specimens.
(cid:1) (cid:2)
(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8)(cid:9)(cid:10)(cid:11)Shiva(cid:12)(cid:13)(cid:14)(cid:15)(cid:16)(cid:17)(cid:18)(cid:19)(cid:20)(cid:21)(cid:22)(cid:23)(cid:19)(cid:24)(cid:25)(cid:26)1(cid:27)(cid:28)(cid:19)(cid:29)(cid:30)(cid:31) (cid:16)(cid:13)!(cid:16)"
(cid:13)(cid:14)(cid:15)(cid:16)(cid:17)(cid:18)#$% (cid:1)(cid:1) (cid:13)(cid:14)(cid:15)(cid:16)(cid:17)(cid:18)#(cid:19)Shiva(cid:12)&’ ()*+,-./(cid:22)(cid:23)6(cid:28)01(cid:23))23
40’ 56’ (cid:20)(cid:21)(cid:22)(cid:23)1(cid:27)(cid:28)7(cid:25)89’ Shivataiwanussp.nov.(cid:26):;9(cid:29)(cid:30)94% <(cid:12)(cid:19)=>?
@&A1+BC40’ <(cid:27)(cid:28)&DEFG#(cid:19)(cid:18)HIJKLMLagerstroemiasubcostata(cid:22)(cid:23)NO(cid:28)
(cid:19)(cid:13)(cid:14)(cid:15)(cid:16)(cid:17)(cid:18)’ P,QQ(cid:13)(cid:14)(cid:15)(cid:16)(cid:17)(cid:18)Nanophyesformosensis(cid:26)RSC2TUV)4% *4’ W
XY3((cid:26),<(cid:28)(cid:26)QQ(cid:13)(cid:14)(cid:15)(cid:16)(cid:17)(cid:18)&’ Z(cid:12)0[\],^(cid:22)(cid:22)_(cid:23)‘ab’ cd\e0fg,
hij2Rk9lm30’ nopqr(cid:19)O0[\]((cid:26)(cid:22)(cid:23)st,uvwx+B]%
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