Pselaphodes prominulus, Huang & Li & Yin, 2018

Huang, Meng-Chi, Li, Li-Zhen & Yin, Zi-Wei, 2018, Eleven new species and a new country record of Pselaphodes (Coleoptera: Staphylinidae: Pselaphinae) from China, with a revised checklist of world species, Acta Entomologica Musei Nationalis Pragae 58 (2), pp. 457-478 : 472-473

Pselaphodes prominulus sp. nov.

( Figs 13B , 15 )

Type material (3 exs). HOLOTYPE:♁, CHINA: ‘ China: Guangxi, Xing’an County ( KÊR), Mao’er Shan N. R. ( ŘĀƜ ḄỸāŊḨOiṖữ), near the peak, 25°52′04″N, 110°24′52″E, 2000–2100 m, shrub leaf litter,sifted, 22.vii.2012, Hu & Song leg.’( SNUC). PARATYPES: CHINA: 1 ♁, also from Guangxi, except ‘Liuzhou City (Ṃnjffl), Jiuwan Shan N. R. (hvhƜ ḄỸāŊḨOiṖữ), Yangmei’ao (ṄaeLj), 25°11′42″N, 108°38′51″E, mixed leaf litter,sifted, 1200 m, 24-26.vii.2015, Li & Zhao leg.’ ( SNUC); 1 ♁, ‘ China: W. Jiangxi, Ji’an City (ẘÊffl), Jinggang Shan (ffṆƜ), Jingzhu Shan ( ḂŰƜ), 26°29′45″N, 114°04′45″E, mixed forest, shrub, flower sweeping & beating, 1160 m, 31.vii.2014, Chen, Hu, Lv & Yu leg.’ ( SNUC).

Diagnosis of male. Length 3.14–3.21 mm; antennomere IX with disc-like process at apex; antennomeres X–XI strongly constricted near base; metaventral processes short, apically truncate; protibia strongly expanded and curved in apical half.

Description. Male ( Fig. 13B ). Body reddish brown, BL 3.14–3.21 mm. Head longer than wide, HL 0.64–0.69 mm, HW 0.59–0.64 mm; each eye composed of about 43 facets. Antennomeres IX–XI ( Fig. 15A ) forming distinct club, antennomere IX with disc-like process at apex, antennomeres X–XI strongly constricted near base. Pronotum ( Fig. 15B ) longer than wide, PL 0.68–0.73 mm, PW 0.63–0.65mm, with lateral margins rounded at apical third and then narrowing apicad. Elytra wider than long, EL 0.91–0.96 mm, EW 1.06–1.12 mm. Metaventral processes ( Fig. 15C ) short, truncate at apex. Protrochanter ( Fig. 15D )and profemur each with tiny ventral spine; protibia ( Fig. 15E ) distinctly curved, and strongly expanded at apical third; mesotrochanter ( Fig. 15F ) with two tiny ventral spines; metatrochanter and metafemur simple ( Fig. 15G ). Abdomen broad at base and narrowed apically, AL 0.80–0.91 mm, AW 1.02–1.10 mm. Sternite IX ( Fig. 15H ) semi-membranous. Length of aedeagus ( Figs 15 I–K) 0.51 mm, median lobe strongly asymmetric, narrowed at apex, parameres broadly elongate, endophallus composed of one long and one short sclerite.

Female. Unknown.

Comparative notes. Males of the new species can be readily separated from similar congeners by the unique form of the antennomeres IX–XI, and the strongly modified protibia.

Etymology. The specific epithet is Latin adjective referring to the strongly expanded and curved protibia in the male of the new species.

Distribution. China: Jiangxi, Guangxi.

Figures

Fig. 13. Dorsal habitus of Pselaphodes males. A – P. posticussp. nov; B – P. prominulussp. nov. Scale bar: 1 mm.

Fig. 15. Male diagnostic features of Pselaphodes prominulus sp. nov. A – antennal club; B – pronotum; C – metaventral process, in lateral view; D – protrochanter and profemur; E – protibia; F – mesotrochanter and mesofemur; G – metatrochanter and metafemur; H – sternite IX; I–K – aedeagus, in dorsal (I), lateral (J), and ventral (K) view. Scale bar: 0.3 mm in A–B, D–G; 0.2 mm in C, I–K; 0.1 mm in H.