Anthobiomorphus makranczyi Shavrin & Smetana, 2020

Shavrin, Alexey V. & Smetana, Aleš, 2020, Anthobiomorphus, a new genus of Anthophagini Thomson, 1859 (Coleoptera: Staphylinidae: Omaliinae), with description of two new species from China, India and Nepal, Zootaxa 4755 (3), pp. 576-586 : 583-585

Anthobiomorphus makranczyi Shavrin & Smetana , sp.n.

( Figs. 2 , 7 , 16–18 )

Type material examined: Holotype ♂ [dissected]: ‘ INDIA, W. Bengal, | Darjeeling Distr., | 3 km S. of Ghum | leg. Gy. Topál’ <rectangular label, printed>, ‘No. 322 extracted | moss samples | 12-21.IV.1967.’ <rectangular label, printed>, ‘ HOLOTYPE | Anthobiomorphus | makranczyi Shavrin & Smetana, 2020 ’ <red rectangular label, printed> ( HNHM).

Paratypes: 1 ♀ [dissected]: same data as the holotype, with additional red rectangular printed label: ‘PARA- TYPE | Anthobiomorphus | makranczyi sp. n. | Shavrin A. V. & Smetana A. 2020’ ( HNHM); 1 ♀ [specimen without left antennomeres 7–11, right protarsomeres 3–5 and right elytron]: ‘E. NEPAL: KOSI | 2 km E. Mangsingma | 1900 m, 19.IV. [19]84 | [I.] Löbl —[A.] Smetana’ ( MHNG) .

Description. Measurements (n=3): HW: 0.65–0.67; HL: 0.40–0.42; AL (holotype): 1.43; OL: 0.20; PL: 0.56– 0.65; PW: 1.00; ESL: 1.40–1.57; EW: 1.37–1.42; AW: 0.97–1.06; MTbL (holotype): 0.72; MTrL (holotype): 0.35 (MTrL 1–4: 0.20; MTrL 5: 0.15); AedL: 0.57; TL: 3.25–3.35 (holotype).

In external appearance similar to A. rougemonti sp.n. Body and legs reddish-brown; middle portion of pronotum yellow-brown to brown; lateral margins of pronotum and apical abdominal tergites yellow to yellow-brown; antennomeres 3–11 brown; mouthparts, antennomeres 1–2 and tarsi yellow (paratype from India with slightly paler middle portion of head, sutural, lateral and basal portions of elytra; paratype from Nepal yellow-brown). Forebody without microsculpture except for anterior portion of head with indistinct transverse microsculpture and dense, fine meshes between supra-antennal prominences and anterior margins of eyes; abdomen with indistinct transverse meshes, more distinct on tergite VII. Habitus as in Fig. 2 .

Head 1.5–1.6 times as wide as long, with indistinctly elevated U-shaped middle portion; latero-apical portions with moderately deep, somewhat elongate impressions, almost reaching anterior margins of eyes; grooves in front of ocelli reaching level of middle length of eyes; anterior portion between antennal insertion and anterior margin of eyes with slightly deeper semicircular notch than that in A. rougemonti sp.n. Ocelli situated at level of posterior margins of eyes, distance between ocelli slightly less than twice the distance between ocellus and posterior margin of eye. Apical maxillary palpomere about four times as long as penultimate palpomere; galea divided into two narrow parts ( Fig. 7 ). Punctation variable and sparse: frons with several sparsely scattered, very small punctures, middle portion with mixed large and deep and fine punctures, with transverse impunctate portion between posterior parts of eyes, portions between margin of eyes and grooves with moderately dense and deep punctures; middle portion of neck with sparse, fine punctures. Antennomeres 4–8 moderately narrow; antennomere 2 indistinctly wider than 3, 4–6 slightly longer than 3 and shorter than 7, 8–9 slightly shorter than 7, 10 slightly wider than 9, apical antennomere 1.6 times as long as 10.

Pronotum 1.5–1.7 times as wide as long, 1.4–1.5 times as wide as head, from middle distinctly narrowed anteriad towards slightly protruding apical angles; apical margin about as wide as somewhat straight posterior margin; lateral edges with one (specimen from Nepal) or two moderately large, smooth protrusions in front of very sharp laterobasal emargination; middle portion of pronotum markedly convex, with wide and deep semicircular impression in medioposterior third; paratype from India with additional pair of very narrow transverse impressions near basal margin of pronotum. Middle portion with very sparse and irregular small punctation, becoming markedly larger and somewhat deeper on lateral and basal portions; paratypes with narrow impunctate portion in medioposterior third; scutellum with several small punctures.

Elytra slightly longer than wide, about two and a half times as long as pronotum, distinctly widened toward apical third and from apical third slightly narrowed apicad, reaching apical margin of abdominal tergite V–VI (or VII in specimen from Nepal). Punctation markedly denser and somewhat larger than that in middle of pronotum, coarser and deeper on prescutellar area, somewhat smaller along suture, on each elytron forming six indistinct, vague and tangled longitudinal rows of punctures.

Apical metatarsomere about as long as three preceding tarsomeres.

Male. Apical margin of abdominal tergite VIII straight. Apical margin of abdominal sternite VIII broadly shallowly emarginate. Aedeagus ( Fig. 16 ) with wide basal portion, gradually narrowed toward truncate apex of median lobe; parameres widened then narrowed apically, markedly exceeding apex of median lobe, with two pairs of small apical and preapical setae; internal sac long, moderately wide, spirally rolled in basal portion. Aedeagus laterally as in Fig. 17 .

Female. Apical margin of tergite VIII somewhat straight. Apical margin of sternite VIII widely rounded.

Comparative notes. Anthobiomorphus makranczyi sp.n. can be distinguished from A. rougemonti sp.n. by the slightly smaller and paler body, the pronotum being more convex in middle portion and with lateral edges from middle distinctly narrowed anteriad towards slightly protruding apical angles, narrower antennomeres 4–8, the wider median lobe, different internal sac and the parameres, markedly exceeding apex of the median lobe.

Distribution. The species is known from two locations in West Bengal, India and in eastern Nepal ( Fig. 18 ).

Bionomics. Specimens from India were extracted from moss samples. The specimen from Nepal was collected by sifting fresh flood debris along edges of a small creek.

Etymology. Eponymic, the species is named to honor our colleague, the esteemed specialist on Oxytelinae, György Makranczy (Budapest) .

Figures

FIGURE 18. Distribution of Anthobiomorphus rougemonti (black circles) in China and A. makranczyi (black squares) in India and Nepal.

FIGURES 1–2. Habitus of species of Anthobiomorphus: 1–A. rougemonti (paratype, Lijiang), 2–A. makranczyi (holotype). Scale bars: 1.0 mm.

FIGURES 3–7. Mouthparts of Anthobiomorphus (3–6–A. rougemonti, 7–A. makranczyi): 3–labrum (dorsal view), 4–mandibles (left and right; dorsal view), 5–labium and mentum (ventral view), 6–maxilla (left; ventral view), 7–maxillary palpus and galea of left maxilla (dorsal view). Scale bars: 0.1 mm.

FIGURES 14–17. Aedeagi of Anthobiomorphus rougemonti (14–15: holotype) and A. makranczyi (16–17: holotype): 14, 16– parameral view, 15, 17–lateral view. Scale bars: 0.1 mm.