Mannerheimia asiatica Kastcheev, 1999

Shavrin, Alexey V., 2021, On the genus Mannerheimia Mäklin, 1880 (Coleoptera: Staphylinidae: Omaliinae: Anthophagini), with taxonomic and faunistic notes on some species, Zootaxa 5040 (3), pp. 301-333 : 316-319

Mannerheimia asiatica Kastcheev, 1999

( Figs. 3 , 40 , 57–58 )

Mannerheimia asiatica Kastcheev, 1999: 142

Type material examined: Holotype, ♂ [dissected]: ‘Кунгей Алатау | уЩ. Кульбастау | 19.7.87 | В.КаЩеев [Kung- ey Alatau, Kul`bastau Gorge. 19.07.1987. V. Kastcheev]’ <photo label>, ‘ Holotypus [printed] | Mannerheimia | asiatica | Kastcheev’ <red, handwritten> ( ZIN).

Paratypes: 3 ♂♂, 4 ♀♀: same data as the holotype, with additional labels: ‘ Paratypus [printed] | Mannerheimia | asiatica | Kastcheev’ <red, handwritten> ( ZIN).

Material examined: 1 ♀: same data as that in holotype, 20- 27.07.1988. ( ZIN) ; 4 ♂♂, 2 ♀♀: same data and collector, Kulbastau River , pass. 22.07.1987. ( ZIN, cSh) .

Redescription. Measurements (n=10): HW: 0.55–0.63; HL: 0.38–0.43; OL: 0.08–0.10; AL: 1.08–1.32; PL: 0.46–0.56; PW: 0.70–0.83; EL: 0.65–0.79; EW: 1.00–1.18; AW: 1.20–1.30; MTbL (averaged): 0.62; MTrL (averaged): 0.33 (MTrL 1–4: 0.18; MTrL 5: 0.15); AedL: 0.60–0.62; TL: 2.55–3.25 (holotype: 3.00).

Body slightly convex, moderately small and wide ( Fig. 3 ). Coloration reddish-brown, with darker head and abdomen; mouthparts, antennae and legs yellowish (sometimes mouthparts paler). Middle and basal portions of head with fine and dense transverse microreticulation, indistinct in middle and coarser between ocelli and temples; neck with dense isodiametric or transverse microsculpture (sometimes middle portion without meshes); pronotum with or without indistinct isodiametric microreticulation in middle; scutellum with fine isodiametric sculpture; basal part of elytra with indistinct and fine isodiametric meshes in some specimens; abdomen with dense, coarse transverse microsculpture on abdominal tergites III–IV and isodiametric on abdominal tergites V–VIII. Head with irregular, sparse, fine punctation, denser in middle; middle portion of neck with sparse, moderately large and deep punctures; punctation of pronotum large and deep, dense or sparse, usually finer in middle, mediobasal portions sometimes without punctures; scutellum without punctation or with several fine punctures; punctation of elytra about as that on pronotum or denser, larger and deeper, sometimes finer and sparser along suture, somewhat irregularly scattered on each elytron and not forming longitudinal rows of punctures; abdominal tergites with dense, moderately large and deep or fine punctation, somewhat denser on abdominal tergites III–IV or III–VI. Body covered by moderately dense and long, semierect pubescence, finer on abdomen.

Head 1.4 times as broad as long, somewhat flattened or with slightly elevated median portion, with narrow, moderately long and deep anteocellar foveae, diagonally stretching toward about level of middle or apical third of eyes (some specimens with wide semicircular depression between foveae), with convex, widely rounded temples, distinctly longer than longitudinal length of eyes. Eyes small, somewhat flattened or slightly convex. Ocelli very small and sometimes indistinct, situated considerably less than level of posterior margins of eyes; distance between ocelli shorter than distance between ocellus and posterior margin of eyes. Apical segment of maxillary palpi about twice as long as preceding segment, distinctly broader in basal third than preceding segment, gradually narrowed toward acute apex. Antenna reaching apical third of elytra when reclined, with elongate antennomeres 4–6 and shortened antennomeres 7–10; basal antennomere moderately wide, more than twice as long as broad, antennomere 2 narrower and shorter than basal antennomere, 3 slightly longer or about as long as 2, 4 broader than 3 and slightly longer than broad, 5–6 broader than 4, 7–9 broader than 6, 10 slightly shorter than 9, apical antennomere 1.5 times as long as preapical antennomere, from about middle gradually narrowing toward subacute or rounded apex.

Pronotum 1.4–1.5 times as broad as long, 1.2–1.3 times as broad as head, widest in about middle or apical third, evenly or significantly narrowed posteriad; widely rounded apical margin slightly shorter than straight or concave posterior margin; anterior angles slightly protruded anteriad; posterior angles obtuse; some specimens with indistinct laterobasal impressions.

Elytra 1.4–1.5 times as broad as long, short, reaching basal margin of abdominal tergite III, significantly widened apicad, 1.4 times as long as pronotum; apical margins widely rounded, strongly truncated toward suture. Hind wings reduced.

Abdomen broader than elytra, without tomentose wing-folding spots on abdominal tergite V and palisade fringe on apical margin of abdominal tergite VII.

Male. Apical margin of abdominal tergite VIII straight. Apical margin of abdominal sternite VIII widely concave. Aedeagus with moderately wide basal portion, gradually narrowed toward rounded apex; parameres long, slightly widened in apical portions, significantly exceeding apex of median lobe; internal sac with two very wide and moderately short fields of elongate thorns ( Fig. 57 ). Lateral aspect of aedeagus as in Fig. 58 .

Female. Apical margin of abdominal tergite VIII straight. Apical margin of abdominal sternite VIII rounded.

Comparative notes. Mannerheimia asiatica differs from the remaining species of the genus by the smaller eyes, elongate temples, and the morphology of the aedeagus. Regarding the short and apically significantly widened elytra, it is similar to M. pleshanovi sp.n., but differs from it by the elongate antennomeres 4–6, a narrower pronotum, and details of the external and internal structure of the aedeagus.

Distribution. The species is known only from the type locality in the Kungey Alatau (=Küngöy Ala-Too Range), north-eastern Kazakhstan ( Fig. 40 ).

Bionomics. According to Kastcheev (1999), type specimens were collected at elevations from 2800 to 3500 m a.s.l. Detailed ecological data are unknown.

Figures

FIGURES 1–9. Habitus of Mannerheimia: 1—M. afghanica (paratype), 2—M. arctica, 3—M. asiatica, 4—M. brevipennis, 5—M. japonica, 6—M. obscura, 7—M. pleshanovi (paratype), 8—M. yasudai, 9—M. zanettii (paratype). Scale bar: 1.0 mm.

FIGURES 39–40. Distribution of Mannerheimia arctica (Fig. 39) and M. brevipennis (Fig. 40). Black circles: material studied by authors, white circles: previously published material not seen by author.

FIGURES 57–62. Aedeagus of Mannerheimia asiatica (Figs. 57–58), M. japonica (Figs. 59–60), M. obscura (Figs. 61–62): 57, 59, 61—parameral view, 58, 60, 62—lateral view. Scale bar: 0.1 mm.