Curculio canosquama Pelsue and Zhang, 2005

Pelsue, Frank W. & Zhang, Runzhi, 2005, A Review of the Genus Curculio from China with Descriptions of Four New Taxa. Part V. The Curculio dentipes (Roelofs) Group (Coleoptera: Curculionidae: Curculionini), The Coleopterists Bulletin (Bethesda, Md.: 1985) 59 (3), pp. 293-303 : 293-303

Curculio canosquama Pelsue and Zhang , new species

( Figs. 7, 8 )

Holotype. China. Hainan male [ China / Hainan Id./ Nodoa / 11 July 1935 / L. Gressitt] ( CASC).

Description. Male: Length: 3.5 mm. Width: 1.8 mm. Head: derm fuscous; punctate with short,

fuscous scales; frons 0.25 as broad as head across eyes with longer, clavate, white scales; gena

ventrally with white macula between eyes. Rostrum: length: 2.3 mm. 0.65 as long as body;

abruptly emerging from frons, broad at base; median dorsal carinae from frons to insertion of

scape; slightly, evenly deflected from base to apex; scrobe ventral; scape inserted in distal 1/2.

Antennae: length: scape 1.0 mm, funiculus 1.0 mm, club 0.45 mm; funiculus as long as scape;

funicular segment 1 longer than 2, 3 slightly more than half as long as 2, 4–7 same length; club

longer than funicular segments 4–7. Thorax: length: 1.0 mm. width: 1.5 mm. 0.66 as long as

broad; evenly rounded from base to constriction, base subsinuate; disc with small punctures

clothed with small, elongate, fuscous scales and larger clavate, cretaceous scales scattered in salt

and pepper manner; pleuron with clavate, aeneous scales basely; procoxae with clavate, white

scales; mesosternal intercoxal process prominent; scutellum small, longer than broad, clothed with

aeneous scales; mesepimeron, mesepisternum, metepisternum densely clothed with clavate

Downloaded From: https://bioone.org/journals/The-Coleopterists-Bulletin on 26 Aug 2021

Terms of Use: https://bioone.org/terms-of-use Access provided by The Coleopterists Society

300 aeneous scales; metasternum clothed with clavate white scales. Elytra: stria deep; scutellar declivity shallow; humeri pronounced, rounded; intervals broad, flat, clothed with small, fuscous scales with larger clavate, cretaceous scales scattered in salt and pepper fashion; intervals 1 and 2 with short vittae of clavate, aeneous scales giving the appearance of median basal macula; crosshatch setae short, suberect, mixed piceous and white. Legs: metafemoral tooth medium, wedge shaped, clothed with narrow, elongate, white scales; tibiae subsinuate, pro- and mesouncus large, metauncus small. Abdomen: sternite 1 longer than 2 behind coxal cavity; 3 and 4 same length together longer than 5; 5 has emarginate apex with single elongate setae on each side; all sternites clothed with clavate white scales with few aeneous scales on sternite 1. Pygidium : small, clothed with short aeneous seta-like scales. Genitalia: not dissected.

Remarks. This taxon is very distinctive with the aeneous macula flanking the scutellum and the cretaceous scales sprinkling the fuscous background color of the pronotum and elytra.

Etymology. The specific epithet is derived from the Latin adjective ‘‘canus,’’ meaning ‘‘whitish-gray’’ or ‘‘white’’ and the Latin noun ‘‘squama,’’ meaning ‘‘scale.’’

Figures

Figs. 7–8. Curculio canosquama n. sp. Male, habitus dorsal and lateral views, holotype. Figs.