Pseudocneorhinus hlavaci, Ren, Li, Borovec, Roman & Zhang, Runzhi, 2019

Ren, Li, Borovec, Roman & Zhang, Runzhi, 2019, On the genus Pseudocneorhinus (Coleoptera, Curculionidae, Entiminae), with descriptions of five new species from China, ZooKeys 853, pp. 57-86 : 57

Pseudocneorhinus hlavaci sp. nov. Figs 7, 8, 38

Type locality.

Dongling Mountains, Xiaolongmen, Liu Lang Yu (China: Beijing).

Material examined.

Holotype. CHINA - Beijing ♀; Dongling Mountains, Xiaolongmen, Liu Lang Yu; 39°58.2'N, 115°25.8'E; 1400 m a.s.l.; 15 Jun. 2001; J. Cooter & P. Hlaváč leg.; Litter; BMNH.

Paratypes. CHINA - Beijing 1 ♀; same data as for holotype; BMNH; 1 ♀; Xiaolongmen forestry station, Nan’gou [小龙门林场南沟]; 1140 m a.s.l.; 30 May– 2 Jun. 2001; X.D. Yu leg. [于晓东]; Larix forest, pitfall trap [落叶松林, 杯诱]; IZCAS, IOZ(E)1965213; 2 ♀♀; Mentougou, Xiaolongmen [门头沟小龙门]; 39°57.6'N, 115°25.8'E; 1164-1210 m a.s.l.; 5 Jul. 2011; K.Y. Zhang leg. [张魁艳]; IZCAS, IOZ(E)1965297, IOZ(E)1965301; 1 ♀; same data as for preceding; G.X. Qiao & J. Chen leg. [乔格侠, 陈军]; IZCAS, IOZ(E)1965300; 1 ♀; Xiaolongmen forestry station, Nan’gou [小龙门林场南沟]; 1140 m a.s.l.; 18-21 Jul. 1999; X.D. Yu leg. [于晓东]; Larix forest, pitfall trap [落叶松林, 杯诱]; IZCAS, IOZ(E)1965194; 1 ♀; Xiaolongmen [小龙门]; 1200-1350 m a.s.l.; 19 Aug. 1999; W.P. Xie leg. [谢为平]; IZCAS, IOZ(E)1965309; 1 ♀♀; Dongling Shan, 100 km W of Beijing; 1500 m a.s.l.; 12-15 Jun. 2000; Zd. Jindra leg.; NMPC; 3 ♀♀; same data as for preceding; RBSC; 1 ♀; same data as for preceding; UMO.

Description.

Body length: Holotype 5.25 mm, paratype 4.95-5.56 mm.

Body (Figs 7, 8) blackish, only antennal club and basal part of first tarsal segment, mucro, fringe of setae at apex of protibia, and claws reddish. Appressed scales on body dense, hiding integument, oval, weakly imbricate, finely longitudinally striate, 5-6 scales across interval width; scales dark brownish with small light brownish spots irregularly scattered on elytra. Raised elytral setae semierect, slender, lanceolate, somewhat shorter than width of one elytral interval, with single sparse, regular row on each interval, setae greyish and blackish, alternating irregularly. Semierect setae on pronotum somewhat shorter than elytral ones, sparse, irregularly scattered. Semiappressed setae on head and rostrum half as long as pronotal setae. Antennae and legs except of basal half of scape with semierect moderately long setae, prominent in outline.

Rostrum (Figs 7, 8) long, 1.09-1.13 × as long as wide, regularly distinctly enlarged from base to antennal insertion, then rounded around apex, without abrupt widening at base. Epifrons tapered from base to midlength and widened again, at apex as wide as at base, longitudinally depressed, with somewhat swollen borders. Epistome V-shaped, long, conspicuous, separated by slender carina from frons, at apex as wide as epifrons in narrowest part. Frons glabrous, V-shaped, as a strip along epistome, bearing five pairs of stout, long apical setae, obliquely directed anteriad. Scrobe in dorsal view visible only in apical part as slender furrow; in lateral view narrow, short, curved, directed towards eye. Rostrum in lateral view somewhat convex, long and slender, separated from head by shallow transverse depression. Eyes weakly prominent from outline of head.

Antennae slender. Scape as long as funicle, straight, weakly and regularly enlarged to apex, at apex only slightly wider than club. Funicle segment 1 as long as and only slightly wider than segment 2, both conical; segment 1 1.7-1.8 × as long as wide; segment 2 1.9-2.0 × as long as wide; segment 3 1.2 × as long as wide; segment 4 1.1 × as long as wide; segments 5 and 6 isodiametric; segment 7 1.1 × as wide as long; club 1.6-1.7 × as long as wide.

Pronotum (Figs 7, 8) 1.42-1.47 × as wide as long, regularly convex on the disc, widest at midlength, with weakly rounded sides, more strongly tapered anteriad than posteriad. Base indistinctly convex, almost straight. Pronotum in lateral view convex, ocular lobes well developed.

Elytra (Figs 7, 8) regularly oval, 1.19-1.24 × as long as wide, widest at midlength; shoulders regularly rounded. Striae distinct; intervals almost flat, equally wide and convex. Elytra in lateral view distinctly convex.

Protibiae rounded at apex, with fringe of short and fine reddish setae, mucronate, on inner margin with 4-5 black, very small and indistinct teeth. Metatibiae with 1-3 black, very small and indistinct teeth in apical half; metatibial corbels squamose. Tarsi robust, segment 2 1.1-1.2 × as wide as long; segment 3 1.4-1.5 × as wide as long and 1.5-1.6 × as wide as segment 2; onychium equally long to 1.1 × as long as segment 3. Claws fused in basal half.

Male genitalia unknown.

Female genitalia. Sternite VIII umbrella-shaped with short apodeme. Gonocoxites flat, weakly sclerotised with short apical styli, armed with setae. Spermatheca (Fig. 38) with cornu long and regularly curved; ramus short twice as wide as long; nodulus short as ramus, half as wide as ramus, returned.

Biology.

The specimens were sifted from forest litter.

Distribution.

China: Beijing (Fig. 52).

Etymology.

The newly described species is dedicated to the collector, our friend Peter Hlaváč (Prague, Czech Republic), well-known specialist of Staphylinidae ( Pselaphinae, Scydmaeninae) and also Curculionidae .

Differential diagnosis.

Pseudocneorhinus hlavaci is most similar to P. sellatus Marshall, 1934 in terms of size, overall shape, regular intervals, and dorsal contour of rostrum (i.e., evenly enlarged apically, base not abruptly widened). It is easily distinguishable from it by elytral setae conspicuous and semierect, rostrum slightly longer than wide with straight sides in basal half and epifrons without longitudinal carina.