Anthobium sculpturatum, Shavrin, 2025

Shavrin, Alexey V., 2025, A revision of eastern Palaearctic Anthobium Leach, 1819 (Coleoptera: Staphylinidae: Omaliinae: Anthophagini). IX. Thirteen new species and records from China and the Himalayan Region, Zootaxa 5728 (1), pp. 47-78 : 60-61

publication ID	https://doi.org/10.11646/zootaxa.5728.1.2
publication LSID	lsid:zoobank.org:pub:C986D1F2-ECC0-47C0-A2DA-E34D7AF77304
persistent identifier	https://treatment.plazi.org/id/03F2AF1C-FF9E-0F79-E880-FBCAC2CCF98B
treatment provided by	Plazi
scientific name	Anthobium sculpturatum
status	sp. nov.

Treatment

Anthobium sculpturatum sp. nov.

( Figs 6 View FIGURES 1–6 , 13 View FIGURE 13 , 21, 22 View FIGURES 21–25 )

Type material. Holotype ♂ ( Fig. 6 View FIGURES 1–6 ; dissected): NEPAL: ‘Nepal-Himalaya, Annapurna Mts. | Khudi Khola Einzug, 3500–4000 m | Umgeb. Rambrong Danda, | 23.05.1993, leg. J. Schmidt’ <printed>, ‘ HOLOTYPE | Anthobium | sculpturatum sp. nov. | Shavrin A.V. des. 2025’ <red, printed> (temporarily in cK, to be eventually deposited in Museum für Naturkunde (Berlin) or another museum).

Paratypes: 1 ♀ (left antennomeres 9–11 and right antennomeres 3–11 missing):

Description. Measurements (n=3): HL: 0.48–0.52; HW: 0.75–0.81; AL: 1.92 ( holotype); OL: 0.22–0.25; LT: 0.06–0.00; PL: 0.63–0.65; PW: 1.20–1.35; ESL: 1.70–1.79; EW: 1.65–1.85; AW: 1.15–1.62; MTbL: 0.95 ( holotype); MTrL ( holotype): 0.38 (MTrL 1–4: 0.22; MTrL 5: 0.16); AedL: 0.75; BL: 4.15–4.40 ( holotype: 4.30).

Body elongate, with moderately wide forebody ( Fig. 6 View FIGURES 1–6 ). Body reddish-brown to dark-brown ( paratypes with paler pronotum and elytra, each with yellow-brown lateral margins); mouthparts, antennae and legs yellow-brown (antennae of holotype darker, brown, paratypes with paler antennomeres 1–3). Lateral parts of clypeus with fine diagonal meshes, each portion between antennal insertion and anterior margin of eye with fine transverse and longidutinal microreticulation, infraorbital portions with indistinct transverse meshes, visible in one paratype; median part of neck with transverse microsculpture, stronger medioapically; abdominal tergites with dense isodiametric microsculpture. Head with irregular punctation, finer and sparser on clypeus, significantly larger, deeper and denser in middle, and coarser on infraorbital portions, elevated parts in front of ocelli without punctures; neck with moderately dense fine punctation; pronotum with dense and large punctation, denser and coarser in medioapical part, sparser laterally, and distinctly sparser and finer in mediobasal portion; scutellum with several fine punctures; punctation of elytra about as that in pronotum, denser and coarser in mediobasal and apical parts, finer and sparser in middle, each elytron bearing five to six tangled and vague longitudinal rows of punctures; abdominal tergites with fine, sparse ( holotype) or moderately dense punctation.

Head with strongly elevated middle and infraorbital portions, 1.5 times as broad as long, with relatively narrow semicircular elevated part in front of ocelli; supra-antennal prominences strongly elevated and distinctly reflexed; anteriomedian depressions wide and deep, reaching level of anterior margins of eyes, median depression between level of posterior parts of eyes moderately deep and wide; anteocellar fovea narrow and moderately deep, slightly or strongly convergent anteriad toward level of middle length of eyes; postocular ridges large, acute, each with interspaces between posterior margin of eye and ridge about as long as diameter of two-three nearest ommatidia. Ocelli small, located at level of postocular ridges. Basal antennomere slightly more than twice as long as broad, antennomere 3 slightly longer and narrower than 2, 4 slightly shorter and indistinctly broader than 3, 5–7 slightly longer than 4, 8–9 shorter than 7, 10 slightly shorter than 9, apical antennomere slightly longer and broader than 10, from apical third strongly narrowed toward obtuse or subacute apex.

Pronotum transverse, with strongly elevated middle part, about twice as broad as long, 1.6 times as broad as head, from widest middle more strongly narrowed posteriad than anteriad; posterior angles subacute or obtuse, not or slightly concave ( one paratype) in laterobasal margins; anterior angles widely rounded, strongly protruded anteriad; anterior margin widely rounded, distinctly protruded anteriad; middle portion with paired moderately deep mediobasal impressions and indistinct medioapical impression, each part between lateral pit and median elevation distinctly impressed; lateral portions widely impressed and strongly explanate, each with deep and large oval pit in about middle; each lateral edge with strong and regular subacute crenulation.

Elytra slightly elevated, about as broad as long, gradually broadened posteriad, slightly more than two and a half times as long as pronotum, reaching basal part of abdominal tergite IV; mediobasal and median parts with irregular transverse and longitudinal elevations between punctures, each elytron with two elongate irregular longitudinal elevations, more distinct in median part; lateral portions moderately wide, slightly explanate; lateral edges with distinct crenulation.

Abdomen with a pair of small oval tomentose spots in middle of abdominal tergite V, with wide intersegmental membranes between tergites IV–VI, covered by brickwall-like sculpture.

Male. Posterior margin of abdominal tergite VIII straight. Apical margin of abdominal sternite VIII slightly sinuate. Aedeagus with wide basal part, gradually narrowed toward rounded apex; parameres indistinctly longer than apex of median lobe, asymmetrical, broadened in preapical third and with narrow apical parts, each with two short apical and two preapical setae; internal sac moderately wide and long, spirally folded in basal portion ( Fig. 21 View FIGURES 21–25 ). Lateral aspect of the aedeagus as in Fig. 22 View FIGURES 21–25 .

Female. Posterior margins of abdominal tergite VIII and sternite VIII truncate.

Comparative notes. Based on the body size and the coloration, the strong sculpture of the forebody, the presence of strong depressions on the pronotum and the shape of asymmetric parameres, A. sculpturatum sp. nov. is similar to the Himalayan A. gracilipalpe , from which it can be distinguished by the less convex forebody, more transverse pronotum with apical angles strongly protruded anteriad, and different morphology of the aedeagus.

Distribution. Anthobium sculpturatum sp. nov. is known from three localities in Gandaki and Bagmati, Nepal ( Fig. 13 View FIGURE 13 ).

Bionomics. Specimens were collected at elevations from 3500 to 4450 m a.s.l. The detailed bionomical data are unknown. One specimen from Yangri Ridge ( Bagmati) was collected together with A. aterrimum sp. nov. and A. curtulum sp. nov.

Etymology. The specific epithet is the Latin adjective sculpturatus, - a, - um (sculptured). It refers to the strong sculpture of the forebody.