Pselaphodes baoxingensis, 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 : 462-464

Pselaphodes baoxingensis sp. nov.

( Figs 4B , 6 )

Type material (5 exs). HOLOTYPE: ♁, CHINA: ‘ China: Sichuan, Baoxing Hsien ( ẎKR), Fengtongzhai N. R. (ỢÑÀḄỸāŊḨOiṖữ), Dengchigou (ṮṀNj), 30°32′N, 102°56′E, 1870 m, mixed leaf litter, sifted, 1.viii.2016, Zhou, Jiang, Liu & Gao leg.’ ( SNUC). PARATYPES: CHINA: 2 ♁♁ 1 ♀, same label data as the holotype ( SNUC); 1 ♁, also from Fengtongzhai N. R., except ‘Dashuigou (†ķNj), 30°34′21.95″N, 102°52′54.92″E, 1594 m, 31.vii.2016.’ ( SNUC).

Diagnosis of male. Length 2.79–2.82 mm; antennomere VII slightly broadened mesally, antennomere IX broadened from base to apex, antennomere X wider than long; broad metaventral processes emarginate at apex; protrochanter with thick ventral spine, profemur strongly broadened, with slender ventral spine; protibia with triangular projection near apex.

Description. Male ( Fig. 4B ). Body reddish brown, BL 2.79–2.82 mm. Head longer than wide, HL 0.60–0.61 mm, HW 0.52–0.53 mm; each eye composed of about 25 facets. Antennomeres IX–XI ( Fig. 6A ) forming distinct club, antennomere VII slightly broadened mesally, antennomere IX broadened from base to apex, antennomere X transverse. Pronotum ( Fig. 6B ) as long as wide, PL 0.60–0.63 mm, PW 0.61–0.62 mm, roundly narrowed from middle to apex. Elytra wider than long, EL 0.73–0.75 mm, EW 1.04–1.05 mm. Metaventral processes ( Fig. 6C ) broad, apically emarginate. Protrochanter ( Fig. 6D ) with thick ventral spine, profemur strongly broadened, with slender ventral spine; protibia ( Fig. 6E ) with small triangular preapical projection; middle and hind legs ( Figs 6 F–G) simple. Abdomen broad at base and narrowed apically, AL 0.83–0.86 mm, AW 1.12–1.13 mm. Sternite IX ( Fig. 6H ) semi-membranous. Length of aedeagus ( Figs 6 I–K) 0.61 mm; median lobe asymmetric, endophallus composed of three sclerites.

Female. Each eye composed of about 20 facets; antennae and legs simple. Measurements: BL 2.85 mm, HL 0.61 mm, HW 0.52 mm, PL 0.62 mm, PW 0.61 mm, EL 0.72 mm, EW 1.08 mm, AL 0.90 mm, AW 1.18 mm.

Comparative notes. The new species is placed as a member of the P. walkeri species group based on the asymmetrical male antennomere VII. Males of the new species can be readily separated from all similar congeners by the unique form of antennomeres IX–X, the broad metaventral processes with an emarginate apex, presence of a thick ventral spine of the protrochanter, a triangular preapical projection of the protibia, as well as the structure of the aedeagus.

Etymology. The specific epithet refers to the type locality of the new species, i.e., Baoxing County; adjective.

Distribution. China: Sichuan.

Figures

Fig. 4. Dorsal habitus of Pselaphodes males. A – P. antennarius sp. nov; B – P. baoxingensissp. nov. Scale bar: 1 mm.

Fig. 6. Male diagnostic features of Pselaphodes baoxingensis sp. nov.A – antennal club; B – pronotum; C – metaventral process, in lateral view; D – protrochanter and profemur; E – apex of 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, F–G; 0.2 mm in C, I–K; 0.1 mm in E, H.