Amphichroum telnovi Shavrin, 2021

Shavrin, Alexey V., 2021, New species and records of the genus Amphichroum Kraatz, 1857 from the Himalayan Region and Tibet (Coleoptera: Staphylinidae: Omaliinae: Anthophagini), Zootaxa 5082 (1), pp. 1-14 : 11-13

publication ID	https://doi.org/ 10.11646/zootaxa.5082.1.1
publication LSID	lsid:zoobank.org:pub:F4F057C6-3207-4430-A88E-4F4513D803C7
DOI	https://doi.org/10.5281/zenodo.5783615
persistent identifier	https://treatment.plazi.org/id/397C5D1D-FFC3-FFD3-FF6F-B545FB6FFD3F
treatment provided by	Plazi
scientific name	Amphichroum telnovi Shavrin
status	sp. nov.

Treatment

Amphichroum telnovi Shavrin View in CoL , sp. n.

( Figs. 7 View FIGURES 1–7 , 16 View FIGURES 15–17 , 25–26 View FIGURES 25–26 )

Paratypes: 1 ♂, 2 ♀♀ (apical and preapical antennomeres of both females are missing): same data as the holotype, with additional red label ‘ PARATYPE | Amphichroum | telnovi sp. n. | Shavrin A.V. des. 2021’ (1 ♂, 1 ♀: cSh, 1 ♀: NME).

Description. Measurements (n=4): HL: 0.37–0.41; HW: 0.59–0.62; AL (holotype): 1.44; OL: 0.17–0.21; PL: 0.61–0.65; PW: 0.81–0.92; ESL: 1.12–1.20; EW: 1.16–1.26; AW: 0.90–1.12; MTbL (holotype): 0.67; MTrL (holotype): 0.54 (MTrL 1–4: 0.29; MTrL 5: 0.25); AedL: 0.65; TL: 3.56–3.95 (holotype: 3.70).

Habitus as in Fig. 7 View FIGURES 1–7 . Body, antennomeres 4–11 and legs yellow-brown (head and disc of pronotum slightly darker); mouthparts, antennomeres 1–3 and tarsi yellow. Head with distinct and dense microsculpture, transverse on clypeus, finer in middle and isodiametric on infraorbital ridges; pronotum without visible microreticulation except for medioapical portion with very fine transverse meshes. Head with irregular, fine and sparse punctation, denser between anteocellar foveae; punctation of pronotum moderately dense, slightly larger and deeper than that in middle of head, sparser in middle and/or mediobasal portion; punctation of elytra larger and deeper than that on pronotum, coarser in basal portion and finer along suture; abdominal tergites with indistinct, sparse and fine punctation. Pronotum and elytra with dense and short pubescence.

Head 1.5 times as broad as long, with narrow or moderately wide and deep anteocellar foveae, reaching level of middle or anterior margins of eyes. Ocelli very large, distance between ocelli about as long as distance between ocellus and posterior margin of eye. Antennomere 3 slightly longer and narrower than 2, 4 distinctly shorter than 3, 5–6 slightly longer and broader than 4, 7 slightly longer than 6, 8 slightly shorter than 7, 9–10 slightly longer than 8.

Pronotum 1.3–1.4 times as broad as long and head, widest in about middle, evenly narrowed both anteriad and posteriad.

Male. Apical margin of abdominal tergite VIII straight. Apical margin of abdominal sternite VIII rounded. Aedeagus ( Fig. 25 View FIGURES 25–26 ) with wide basal portion, gradually narrowed toward subacute apex; parameres very narrow, slightly exceeding apex of median lobe, with one short apical and preapical setae; internal sac narrow, long, with a pair of subapical and median and four basal sclerotized, elongate structures. Lateral aspect of aedeagus as in Fig. 26 View FIGURES 25–26 .

Female. Apical margins of abdominal tergite VIII and sternite VIII rounded.

Comparative notes. Based on the general shapes of the apical portion of the median lobe and the parameres, A. telnovi sp. n. is similar to A. altivagans and A. anthobioides . From A. altivagans it differs by the larger body, the shape of the pronotum, from middle evenly narrowed both anteriad and posteriad, and shorter elytra, and from A. anthobioides by the paler pronotum and elytra. From both species it can be distinguished by details of the structure of the internal sac.

Distribution. The new species is known only from the type locality in western Nepal ( Fig. 16 View FIGURES 15–17 ).

Bionomics. Specimens were collected at elevations from 4100 to 4200 m a.s.l.

Etymology. Patronymic, the species is named to honor my colleague, Dmitry Telnov (London).