Curculio brevidens Pelsue and Zhang

Pelsue, Frank W. & Zhang, Runzhi, 2003, A Review of the Genus Curculio from China with Descriptions of Fourteen New Species. Part IV. The Curculio sikkimensis (Heller) Group (Coleoptera: Curculionidae: Curculioninae: Curculionini), The Coleopterists Bulletin 57 (3), pp. 311-333 : 323-325

Curculio brevidens Pelsue and Zhang , new species

( Figs. 25–26 , 52–55)

Holotype. China. Kunyu Mountain male[ China / Shandong /Kunyu Mountain/ 12 June 1964 / J Mao] ( IZAS).

Paratype. (1) China. Sangeng female[ China / Fujian /Sanming(Sangeng)/ Y. Li] ( FWPC) .

Description. Male: length: 5.6 mm (n ¼ 1). width: 2.8 mm (n ¼ 1). Head: Small-sized; small punctures with short to longer anterior cinerous scales; frons 0.13 as broad as head across eyes, few suberect, narrow, elongate, cinerous scales. Rostrum: length: 3.0 mm; 0.54 as long as body; cylindrical; oval punctures basally, small and round distally; gradual deflected; scrobe lateral; scape inserted at midpoint. Antennae: length: scape 1.1 mm. funiculus: segment one 0.4 mm, two 0.3 mm, three 0.25 mm, four 0.15 mm, five 0.2 mm, six 0.15 mm, seven 0.2 mm, club 0.5 mm (n ¼ 1); funicle 1.65 mm; scape 0.66 as long as funicle; club small, acuminate, not as long as funicular segments 5–7; scape not as long as funicular segments 1–4. Thorax: length: 1.4 mm (n ¼ 1). width:

Figs. 27–28. Curculio bullabrevis n. sp. Female, habitus dorsal and lateral views, holotype. Figs. 29–30. Curculio wangi n. sp. Female, habitus dorsal and lateral views, holotype. Various scales.

1.9 mm (n ¼ 1); 0.73 as long as broad; dorsally margins parallel from base to 3/4 of length then rounded to constriction; disc clothed with narrow, elongate, cinerous and fuscous scales, flat in lateral view; pleuron clothed with clavate cinerous scales; mesosternal intercoxal process feebly visible; scutellum small, longer than broad, clothed with white scales; mesepimeron, mesepisternum, metepisternum, sternum clothed with clavate cinerous scales. Elytra: length: 3.6 mm (n ¼ 1). striae deep with small punctures and small, narrow, cinerous scales; humeri prominent, rounded; shallow scutellar declivity; intervals broad, clothed with clavate cinerous scales with broad fascia at midpoint, wavy narrow fascia of fuscous scales toward apex; crosshatched setae not prominent. Legs: length of hind femur 2.3 mm (n ¼ 1); pro-, meso-, and metafemoral teeth small; femora moderately robust, clothed with narrow, elongate, cinerous scales; tibiae straight, pro-, mesouncus small, metauncus wanting. Abdomen: sternite 2 longer than 1 behind coxal cavity; sternite 2 ascending to 3; sternite 3 longer than 4, combined longer than 5; sternite 5 with truncate apex and two lateral elongate seta-like scales; all sternites clothed with narrow, elongate, some clavate, cinerous scales. Pygidium: small . Genitalia: median lobe 1.4 mm in length (n ¼ 1), 0.5 mm (n ¼ 1) in width; sclerotized margins narrow; base as broad as before apex in dorsal view, apex abruptly deflected to acute point; essentially flat from base to before deflected apex in lateral view, margins thin (Figs. 53–55); apodeme 1.9 mm (n ¼ 1) in length.

Female: length: 5.3 mm (n ¼ 1). width: 2.5 mm (n ¼ 1). Rostrum: length: 3.5 mm (n ¼ 1). Frons: 0.19 (n ¼ 1) as broad as head across eyes. Antennae: length: scape 0.8 mm. funiculus: segment one 0.5 mm, two 0.35 mm, three 0.3 mm, four 0.2 mm, five 0.25 mm, six 0.2 mm, seven 0.2 mm, club 0.5 mm (n ¼ 1), funicle 2.0 mm; scape 0.4 as long as funicle. Thorax: length: 1.4 mm (n ¼ 1). width: 1.9 mm (n ¼ 1); base straight. Elytra: length: 3.5 mm (n ¼ 1); convex in lateral view. Legs: length hind femur 2.3 mm (n ¼ 1); all unci absent. Abdomen: Sternite 5 with apical concavity. Pygidium: small . Genitalia: spermatheca: ramus oblique; collum broadly rounded to acute apex; cornu moderately broad to rounded apex (n ¼ 1) (Fig. 52).

Remarks. The species stands alone from the remainder of the group by the canus scales and fuscous fascia on elytra.

Etymology. The specific epithet refers to the size of metafemoral tooth, ‘‘brevis’’ Latin adjective for ‘‘small’’ and ‘‘dens’’ Latin noun for ‘‘tooth.’’

Figures

Figs. 25–26. Curculio brevidens n. sp. Female, habitus dorsal and lateral views, holotype.