Curculio unimaculata 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 unimaculata Pelsue and Zhang , new species

( Figs. 13, 14 )

Holotype. China. Xishuanbanna male [ China / Yunnan Province /Xishuanbanna/ 750–800 m / 01 July 1958 / P. Hong] ( IZAS).

Description. Male. Length: 3.1 mm. Width: 1.6 mm. Head: 0.54 as broad as pronotum; small

punctures; glabrous; frons 0.23 as broad as head across eyes, few narrow, elongate, dirty white

scales. Rostrum: length 2.3 mm; 0.74 as long as body; derm piceous; abruptly emerging from

frons, dorsal carina from frons to 1/3 of length, flanked by slit-like punctures; broadens before

apex in frontal view; straight to insertion of scape then slightly deflected to apex; scrobe lateral;

scape inserted in apical 0.5. Antennae: length: scape 1.2 mm, funicle 1.3 mm, club 0.4 mm; scape

0.92 as long as funicle; funicular segment 2 as long as 1, 3 longer than 4 and 7, 4 and 7 longer than

5 and 6; club not as long as funicular segments 4–7. Thorax: length: 1.0 mm, width 1.2 mm; 0.83

as broad as long; derm piceous; not as broad as base of elytra, base sinuate, evenly deflected to

constriction; disc convex in lateral view, punctures numerous, small, deep, with raised margins

appearing reticulate, vestiture of small, narrow, white scales, laterobasal macula of clavate,

cretaceous scales; mesosternal intercoxal process not visible; scutellum broader than long, clothed

with cretaceous scales; mesepimeron densely clothed with clavate, cretaceous scales;

mesepisternum almost as densely clothed with clavate cretaceous scales; metepisternum with

posterior macula of clavate, cretaceous scales. Elytra: striae narrow, deep; shallow scutellar

declivity; humeri feebly pronounced, rounded; basal fascia from intervals 2–4 flanking scutellum

of clavate cretaceous scales; median diamond shaped macula on intervals 1–3 of clavate,

cretaceous scales; crosshatch setae short, suberect, piceous. Legs: all femora with small teeth;

femoral shank narrow to robust clava; metafemur exceeding elytral apex by 2 3 dorsal width of

clava; clothed with narrow, elongate, acute apex, white scales; tibiae subsinuate, pro- mesouncus

small, metauncus smaller. Abdomen: sternite 2 longer than 1 behind coxal cavity; 2 with lateral

margin deflected over portion of 3; 3 longer than 4 together as long as 5; 5 with mediobasal

shallow declivity, apex truncate with 4 long seta-like scales and 4 shorter between; all sternites

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302 densely clothed with clavate, cretaceous scales. Pygidium : large, with moderately long, narrow, clavate, seta-like cretaceous scales. Genitalia: not dissected.

Remarks. This species cannot be confused with any of the species in this group due to the elytral, diamond shaped macula, laterobasal pronotal macula, short fascia flanking scutellum and scutellum of cretaceous scales. Curculio heterfunicularis (Heller) appears similar to this species, but lacks the short fascia of cretaceous scales flanking the scutellum and has a longer rostrum.

Etymology. This is from the specific epithet ‘‘unus,’’ the Latin noun for ‘‘one,’’ and ‘‘maculata,’’ the Latin noun for ‘‘spot.’’

Figures

Figs. 13–14. Curculio unimaculata n. sp. Female, habitus dorsal and lateral views, holotype.