Geodromicus (s.str.) lebedevianus Roubal, 1929

Shavrin, Alexey V., 2022, The bodemeyeri and the convexicollis species groups of the genus Geodromicus Redtenbacher, 1857, and additional taxonomic and faunistic data for some species of the Eastern Palaearctic Region (Coleoptera: Staphylinidae: Omaliinae), Zootaxa 5213 (5), pp. 451-496 : 475-476

Geodromicus (s.str.) lebedevianus Roubal, 1929

( Figs. 44–45 , 52–53 , 63 )

Geodromcius lebedevianus Roubal, 1929: 46

Type material examined. Neotype (here designated) of Geodromicus lebedevianus Roubal, 1929 , ♀ (right antennomeres 9–11 missing): ‘ Kirghizia —E Talasskij | Alatau, Tschitschkan, | Itagar river near Dangi | 42°09′37N, 72°51′04E | 2000m, 19.VII. 1998. | leg. Müller-Motzfeld’ <printed>, ‘ NEOTYPE | Geodromicus | lebedevianus Roubal, 1929 | Shavrin A.V. des. 2022’ <red, printed> ( MNHUB).

Material examined: KYRGYZSTAN: TALAS: 1 ♂, 2 ♀♀: Tian-Shan slope of Kyrgyzskyi Mts., Kara-Balta. 17.05.1990. S.V. Ovchinnikov leg. (cSh); YSSIK-KOL: 2 ♂♂, 1 ♀: Chichkan Valley, 42°07′N 72°48′E. 1850 m a.s.l. 30.VII.1999. Müller-Motzfeld leg. (cA, cSch); 1 ♂: same data. 14.08.2003. T. Kölkebeck leg. (cSch) .

Redescription. Measurements (n=8): HW: 0.84–0.87; HL: 0.56–0.64; OL: 0.25–0.27; TL: 0.10–0.12; AL (averaged): 3.03; PL: 0.78–0.87; PWmax: 0.98–1.05; PWmin: 0.74–0.80; ESL: 1.54–1.65; EW: 1.72–1.85; MTbL (averaged): 1.27; MTrL (averaged): 0.56 (MTrL 1–4: 0.31; MTrL 5: 0.25); AW: 1.56–1.86; AedL: 0.82–0.87; BL: 4.72–6.05 (neotype: 4.90).

Habitus as in Figs. 44–45 . Body yellow-brown to dark-brown or black, with yellow-brown middle portions of elytra, sometimes forming very long and wide pale macula on each elytron; mouthparts, antennae and legs yellow to yellowish-brown (some specimens with paler antennomeres 1–2 or 1–3). Forebody without microsculpture except of head with very fine traces in frontal portion (some specimens) and coarse, dense and transverse meshes between ocelli; abdominal tergites with dense transverse microreticulation, usually finer on tergites VI–VII.

Head 1.3–1.5 times as broad as long, with moderately deep and wide anterio-median depression; temples more than twice shorter than longitudial length of eyes, gradually narrowed toward neck; interocellar depression rectangular, narrow or moderately wide and deep, separated from infraorbital portions by narrow and deep anteocellar foveae, reaching level of middle or apical third of eyes. Ocelli large, distance between ocelli slightly longer than distance between ocellus and posterior margin of eye. Punctation fine and sparse, sometimes denser in middle. Antenna reaching middle length of elytra when reclined; antennomere 3 indistinctly about as long as 2, 4 slightly shorter than 3, 5–9 slightly longer than 4, 10 slightly shorter than 9, apical antennomere 1.3–1.6 times as long as 10.

Pronotum small, slightly convex, 1.2 times as broad as long, from widest anterior third strongly narrowed basad toward long subparallel mediolateral portions; mediobasal portion with transverse and moderately deep depression. Punctation dense or sparse (some specimens), distinctly larger and deeper than that on head, finer in middle and/or mediobasal portions (some specimens with narrow impunctated portion in front of mediobasal depression).

Elytra 1.1 times as broad as long, slightly or widely broadened posteriad, 1.8–1.9 times as long as pronotum. Punctation sparser or denser than that on pronotum, but distinctly larger and deeper, sometimes coarser and denser in parascutellar portion and denser or sparser and somewhat finer along suture.

Metatibia slightly more than twice as long as metatarsi.

Male. Profemuri slightly widened; protarsomeres 1–4 wide. Apical margin of abdominal tergite VIII rounded or truncate. Apical margin of abdominal sternite VIII concave.

Female. Profemuri and protarsomeres 1–4 narrow. Apical margins of abdominal tergite VIII and abdominal sternite VIII straight or rounded. Aedeagus with moderately wide basal portion, gradually narrowed toward rounded apex; parameres strongly broadened toward apical portions, distinctly exceeding apex of median lobe, with three moderately short apical and two–three preapical setae; internal sac weakly sclerotized, with very long and narrow flagellum, slightly widened in basal portion ( Fig. 52 ). Lateral aspect of the aedeagus as in Fig. 53 .

Comparative notes. Based on the shape of the moderately narrow pronotum, G. (s.str.) lebedevianus is somewhat similar to G. (s.str.) medvedevi , from which it can be distinguished by the more sharply narrowed laterobasal portions of the pronotum, coloration of the elytra, and longer and broader parameres.

Distribution. Geodromicus (s.str.) lebedevianus is known from several localities of mountain regions of Kyrgyzstan ( Fig. 63 ).

Bionomics. Specimens were collected at elevations from 1850 to 2000 m a.s.l The detailed bionomical data are unknown.

Remarks. Geodromicus lebedevianus was originally described based on the unspecified number of syntypes from “Russisch-Asien: Talass-Tal…”. The original description provided morphological features corresponding with some species of the convexicollis group, e.g. G. convexicollis . The studied specimens above have similar morphological features as that in the original description such as coloration of the body, small and narrow pronotum (“Halsschild etwa so lang wie breit…”), etc. Roubal compared it with several species of Geodromicus , including G. (s.str.) convexicollis , from which he distinguished it by “durch die ganz andere Position der Ozellen, die Halsschildfurche etc.”. The type material was looked by me in the collection of SNMB in 2015, but was not found except the box with the bottom label “ lebedevianus Roubal ” and one hole under it. Apparently, the type (types?) was lost. Thus, I designate a neotype here in the interest of the stability of nomenclature. I have chosen a specimen for it from the same mountain range (Talas Alatau) from which G. lebedevianus was originally described.

The record of G. (s.str.) lebedivianus from Aksu-Zhabagly Nature Reserve by Kashcheev & Ishkov (2001) require confirmation. I identified only specimens of G. (s.str.) convexicollis during the study of Kashcheev`s material from this Nature Reserve (see above).

Figures

FIGURE 63. Distribution of Geodromicus macrothorax (squares) and G. lebedevianus (circles) in the Middle Asia.

FIGURES 40–45. Habitus of Geodromicus: 40—G. kashmirensis (lectotype), 41—G. similis (lectoype), 42—G. consors (holotype), 43—G. karakorus (holotype), 44–45—G. lebedevianus (Fig. 44: Kyrgyzstan, Chichkan Vallley; Fig. 45: Kyrgyzstan, Kara-Balta). Scale bars: 1.0 mm.

FIGURES 52–56. Aedeagus of Geodromicus lebedevianus (Figs. 52–53: Kazakhstan, Chichkan Valley) and G. macrothorax (Figs. 54–55: Kazakhstan, Chelkydysu; Fig. 56: Kyrgyzstan, Grigoryevka): 52, 54, 56—parameral view, 53, 55—lateral view. Scale bars: 0.1 mm.