Indoquedius nonparallelus, Zhao, Zony-Yi & Zhou, Hong-Zhang, 2010

Zhao, Zony-Yi & Zhou, Hong-Zhang, 2010, Taxonomy of the genus Indoquedius Blackwelder (Coleoptera: Staphylinidae: Staphylininae) of China with description of four new species, Zootaxa 2619, pp. 27-38 : 34-36

9. Indoquedius nonparallelus sp. nov.

( Fig. 6 )

Type material: Holotype: CHINA: Yunnan: ɗ, Gonggashan County, 2200 m, 12.IV.2002, collected by Hong-Bin Liang & Wei-Dong Ba (IZ-CAS).

Description. Head black; pronotum very dark reddish-brown, nearly black; scutellum with similar color as pronotum; elytra somewhat transparent, reddish-brown; abdomen similar to pronotum, but apical half of tergite VII and entire tergite VIII paler, yellowish-brown, apical portion of tergite IX dark brown; antennomeres I–III dark reddish-brown, IV–V pale brown, VI–XI very pale whitish-yellow; labrum dark reddish-brown, mandibles very dark reddish-brown, nearly black, maxillary and labial palpi similarly colored as labrum; all legs with femora very dark reddish-brown, nearly black, tibiae dark reddish-brown but paler than femora, tarsi reddish-brown and paler than tibia.

BL = 14 mm, BW = 3.8 mm, HL/PL/EL = 1.00:1.40:2.00, HW/PW/EW/AW = 1.00:1.33:1.47:1.27.

Head round, wider than long, HW/HL = 1.14; eye large, in dorsal view longer than tempora, HEL/HTL = 1.80; posterior setiferous puncture situated obviously behind level of and with socket not touching posterior side of eye, but still much closer to posterior side of eye than to nuchal constriction, two setiferous punctures between anterior and posterior frontal setiferous punctures along medial side of eye; temporal setiferous puncture closer to posterior side of eye than to nuchal constriction; basal setiferous puncture closer to nuchal constriction than to posterior frontal setiferous puncture.

Pronotum wider than long, PW/PL = 1.11, lateral and posterior edge rounded; three setiferous punctures in each dorsal row, one setiferous puncture in each sublateral row, large lateral setiferous puncture very close to but obviously with socket not touching lateral marginal groove, and slightly behind level of last puncture in dorsal row; posterior ventral plate bearing middle longitudinal carina and not divided into two parts.

Scutellum densely punctuated but lacking any setae.

Elytra slightly wider than long, EW/EL = 1.06, ESL/EL = 0.57; each elytron with two large antero-lateral setae, small anterior area impunctate, other areas covered with coarse setiferous punctures gradually becoming sparser from base to apex, surface between punctures lacking microsculpture.

Each abdominal tergite evenly covered with dense setiferous punctures, transverse microsculpture on each tergite very vague, but more obvious and more irregular around setiferous punctures, spiracles and also just behind basal ridge; sternite III with middle portion of basal ridge sharply pointed backward.

Male sternite VII ( Fig. 6 A) with four long subapical setae on each side, apical margin with a very shallow middle emargination, a small area around the emargination impunctate; tergite VIII ( Fig. 6 B) with one long setae on each side, basal ridge with middle portion slightly arcuated backward; sternite VIII ( Fig. 6 C) with two large setae on each side, basal ridge with middle portion nearly straight, apical margin with a middle emargination, a small subtriangular area around the emargination impunctate; sternite IX ( Fig. 6 D) with basal portion very small and narrow, one long apical seta on each side, apical margin with a deep middle emargination; tergite X ( Fig. 6 E) with basal side broadly concaved, apical margin with a middle emargination; aedeagus in lateral view ( Fig. 6 F) with apex of paramere protruding beyond that of median lobe, paramere nearly straight throughout whole length; median lobe with apical portion bent towards paramere, aedeagus in parameral view ( Fig. 6 G) with paramere from base to apex gradually narrowed; paramere narrower than median lobe throughout whole length, apical portion of paramere with four apical setae, two subapical setae on each side, underside covered with about 40–50 sensory peg setae forming a longitudinal group along midline from apex to far below the insertions of subapical setae ( Fig. 6 H). Female unknown.

Distribution. China (Yunnan).

Remarks. This new species is much larger and more robust than other congener species except for Indoquedius hisamatsui . Pronotum sides of the new species are more convergent anteriad than in other congener species.

Etymology. The species name is from Greek words non- (not) and parallelus (parallel) referring to the lateral sides of the pronotum converging anteriad.

Figures

FIGURE 6. Indoquedius nonparallelus sp. nov.: A, male sternite VII; B, male tergite VIII; C, male sternite VIII; D, male sternite IX; E, male tergite X; F, aedeagus in lateral view; G, aedeagus in parameral view; H, underside of paramere. Scales = 0.5 mm.