Geodromicus (s.str.) bodemeyeri Bernhauer, 1902

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 : 453-457

Geodromicus (s.str.) bodemeyeri Bernhauer, 1902

( Figs. 1 , 7–12 , 25 )

Geodromicus bodemeyeri Bernhauer, 1902: 250 ; Luze 1903: 110, Bordoni 1984: 42

Geodromicus convexus Khnzorian, 1962: 106 syn.n.

Geodromicus rivularis Khnzorian, 1962: 107 ; Iablokoff-Khnzorian 1989: 137, 138 syn.

Type material examined. Holotype of Geodromicus bodemeyeri Bernhauer, 1902 , ♂: ‘ Asia minor | Bulghar Maaden | v.Bodemeyer’ <printed>, ‘unbekannt’ <handwritten>, ‘Bodemeyeri | Brnh Type.’ <handwritten>, ‘Chicago NHMus | M.Bernhauer | Collection’ <printed>, ‘ HOLOTYPE | teste D.J.Clarke 2014 | GDI Imaging Project’ <violet, printed>, ‘PHOTOGRAPHED | Kelsey Keaton 2014 | Emu Catalog’ <blue, printed>, ‘FMNHINS | 2819535 | FIELD MUSEUM’ <printed, with barcode on left side of the label> ( FMNH) .

The photographs of the habitus and type labels of the holotype are available in Arthropod Collections Database of FMNH (last access: 02.11.2022).

Additional material examined. RUSSIA: KABARDINO-BALKARIA: 1 ♂: ‘Caucasus, Naltshik, rip-fl.[?], ix.[19]60’ ( ZMUC); NORTH OSSETIA-ALANIA: 1 ♂: Alagir, riverbank of Ardon River. 650 m a.s.l. 06.06.1984. S.K. Alexeev leg. (cSh); TURKEY: IZMIR: 1 ♂: ‘ ♂ ’, ‘Anamas Gbg.’, ‘Kl[ein].-As[ien].’, ‘Pisidischer’, ‘Taurus’, ‘Weirather’, ‘Inssbruck’, ‘ bodemeyeri Bernh. ’, ‘ex coll. Scheerpeltz’, ‘ Geodromicus bodemeyeri B. det. A. Bordoni 1983 extraxit et delin.’ ( NMW); BURSA: 2 ♀♀: Uludað. 31.07.1988. M. Jäch leg. ( NMW); BOLU: 1 ♀: Abant. 1400 m a.s.l. 17.07.1971. A. Vigna leg. (cB); NIÐDE: 1 ♂: ‘Asia Minor Bulghar [Bolghar Dagh] Maaden v.Bodemeyer’, ‘ Bodemeyeri Bh. det. Bernh.’ ( FMNH); GüMüşHANE: 1 ♀: Kösedagi Pass. Stream, 2–3 m wide, granite. 29.05.1989. M. Jäch leg. ( NMW); ERZINZAN: 2 ♂♂, 1 ♀: 10 km SE Refahiye. Small creeks, volcanic rock, with minor calcareous rocks. 10.06.1989. M. Jäch leg. ( NMW); ERZURUM: 1 ♂: Tortum-Narman. Small creek at Kirecli Pass, ca. 2200 m a.s.l., as well as small spring-fed creek E of the pass at 2300 m a.s.l. 09.06.1989. M. Jäch leg. ( NMW); KARS: 1 ♂: Sarikamis. Small streams flowing through meadows, 2–5 m wide, ca. 10 km S Sarikamis, ca. 2000 m, volcanic; also small artificial forest pond in pine forest. 08.06.1989. M. Jäch leg. ( NMW); 1 ♂: Kagizman. 08.06.1989. S. Schödl leg. ( NMW).

Redescription. Measurements (n=14): HW: 0.92–1.07; HL: 0.59–0.72; OL: 0.27–0.32; TL: 0.15–0.19; AL (averaged): 3.40; PL: 0.94–1.25; PWmax: 1.12–1.47; PWmin: 0.83–1.02; ESL: 1.68–1.92; EW: 1.69–2.17; MTbL (averaged): 1.35; MTrL (averaged): 0.66 (MTrL 1–4: 0.34; MTrL 5: 0.32); AW: 1.61–2.42; AedL: 1.12–1.18; BL: 5.20–7.00 (holotype of G. (s.str.) bodemeyeri : 5.50).

Habitus as in Fig. 1 . Body brown to reddish-brown, with paler elytra and abdomen (holotype paler, with darker head and yellowish large spots on each elytron); mouthparts, antennae and legs yellow-brown to brown (apical segment of maxillary palpi usually yellow, some specimens with yellowish antennomeres 1–2 or 1–3, femuri and tarsi). Body glossy; forebody without microsculpture, except neck with very dense isodiametric meshes and abdominal tergites with dense transverse or isodiametric microreticulation (some specimens with fine, dense, transverse or isodiametric meshes between ocelli). Pubescence of forebody white or yellow, very dense, moderately long, semierect, longer on apical portion of head; abdomen with dense, decumbent pubescence, slightly shorter and finer than that on forebody.

Head 1.4–1.5 times as broad as long, slightly convex, more elevated between ocelli and eyes, frontal portion with slightly convex supra-antennal elevations, with relatively deep, wide and subtriangular anterio-median depression, narrowed and extended basad to level of anterior margins of eyes, sometimes connected with interocellar depression; temples moderately convex and long, slightly less than twice as long as longitudinal length of eyes; interocellar depression subrectangular, moderately large and deep, separated from infraorbital portions by distinctly convergent latero-anteriad narrow and deep anteocellar foveae (grooves in front of ocelli), reaching level of apical third of eyes. Eyes moderately large and convex. Ocelli small, distance between ocelli about as long as distance between ocellus and posterior margin of eye, or slightly shorter. Punctation irregular, moderately fine, dense or sparse, sometimes denser in middle and/or infraorbital portions. Maxillary palpomere 3 about as long as preceding segment, significantly broadened apicad; apical palpomere distinctly shorter than 3, from middle gradually narrowed toward subacute apex. Antenna long, reaching apical third or middle of elytra when reclined; basal antennomere robust and long, about three times as long as broad, antennomere 2 distinctly narrower and about twice shorter than basal antennomere, 3 about as broad as and 1.3–1.6 times as long as 2, 4 slightly shorter than 3, 5–8 distinctly longer than 4, 9–10 slightly broader and longer than 8, apical antennomere 1.2–1.4 times as long as 10, from apical third gradually narrowed toward subacute apex.

Pronotum convex, slightly broader than long, from widest anterior third gradually narrowed toward widely rounded anterior and sharply narrowed toward subacute hind angles; short laterobasal margins somewhat subparallel; middle portion without longitudinal depression, or with traces of it in middle in some specimens, with shallow or deep transverse mediobasal depression; anterior margin slightly concave, straight or rounded, about as that or slightly shorter than straight posterior margin. Punctation regular, very dense, slightly larger and deeper than that in middle of head, with interspaces between punctures in middle about as long diameters of two–four nearest punctures, sparser in medioapical portion in some specimens, mediobasal portion without punctation.

Scutellum large, without punctation, with fine transverse meshes or without them,with elongate subtrangular apex.

Elytra convex, slightly broader than long, slightly broadened posteriad, 1.5–1.7 times as long as pronotum; lateral margins narrowly flattened and slightly reflexed in latero-apical portions; hind margins straight or slightly rounded. Punctation variable, about as that on pronotum, slightly denser and larger or finer and sparser, usually finer in middle along suture.

Legs slender; protarsi about 1.3 times as long as protibia; meso- and metatarsi distinctly longer, about 1.2 times as long as tibia; apical metatarsomere about as long as preceding four segments.

Abdomen slightly narrower, as broad as or slightly broader than elytra, with two large, transverse tomentose spots in middle of abdominal tergite IV and narrow palisade fringe on apical margin of abdominal tergite VII.

Male. Pronotum usually wide, strongly convex. Profemuri wide or very wide in some specimens; protarsomeres 1–4 wide. Apical margin of abdominal tergite VIII straight or sligthly concave. Apical margin of abdominal sternite VIII widely concave.Aedeagus with moderately small basal part, gradually narrowed toward wide median lobe, and from apical third of median lobe slightly ( Figs. 7, 9–11 ) or sharply ( Fig. 12 ) narrowed toward small rounded apex; parameres broadened toward moderately wide apical portions, exceeding apex of median lobe or slightly shorter (Fig.), with four moderately long apical setae; median lobe with two sclerotized, elongate and concave dorsal lobes in apical portion and two narrow and very long, sclerotized, parallel structures in middle portion; internal sac with narrow and moderately long flagellum, stretching from basal portion toward median sclerotized structures, with two indistinct and very fine fields of thorns in basal or middle portion (Figs.). Lateral aspect of the aedeagus as in Fig. 8 .

Female. Pronotum moderately narrow, less convex. Profemuri and protarsomeres 1–4 narrow. Apical margin of abdominal tergite VIII straight. Apical margin of abdominal sternite VIII straight or rounded.

Comparative notes. Based on the general shape of the body and the aedeagus, G. (s.str.) bodemeyeri is similar to G. (s.str.) zwickianus , from which it can be distinguished by the slightly narrower pronotum and the presence of the sclerotized parallel structures in the middle of the median lobe.

Distribution. Geodromicus (s.str.) bodemeyeri is distributed in the Caucasus and Turkey ( Fig. 25 ).

Bionomics. Specimens were collected at elevations from 650 to 2300 m a.s.l. and some specimens were taken from under stones and gravel along river banks. One specimen (“ G. convexus ”) was collected near shore of the lake ( Khnzorian 1962).

Remarks. Geodromicus bodemeyeri based on the holotype was originally described from “Kleinasien, Bulghar Maaden”. Bordoni (1984) provided morphological features of G. (s.str.) bodemeyeri , including sketchy figure of the aedeagus ( Bordoni (1984): fig. X.1) and include it to the rousi group ( Shavrin 2021).

Geodromicus convexus based on three males was originally described from Armenia ( Sevan Lake and Megri , Araks River ) and Azerbaijan ( Nüsnüs , Ordubadskiy District). I`m not studied the type material, but the studied male from Naltshik (Kabardino-Balkaria) is conspecific with types and it was compared with them by A. Solodovnikov in 2000. The aedeagus ( Fig. 11 ) and the description of this species also corresponds with the external morphological features of G. (s.str.) bodemeyeri .

Geodromicus rivularis was originally described based on male and female from Araks River, Armenia (the same locality together with G. convexus ). Iablokoff-Khnzorian (1989) provided the figure of the aedeagus of the holotype ( Iablokoff-Khnzorian (1989): fig. 2), which very similar in the shape with the aedeagus studied by me in specimen from North Ossetia-Alania ( Fig. 12 ). In the same article, Iablokoff-Khnzorian (1989) synonymized G. convexus with G. rivularis . This synonymyzation was not reported in catalogues (e.g. Herman (2001), Schülke & Smetana (2015)). Morphological features provided in the original description of G. rivularis correspond with external and internal morphological features of G. (s.str.) bodemeyeri . Thus, I synonymyzed G. rivularis with it.

Figures

FIGURE 25. Distribution of Geodromicus in the Palaearctic Region: G. bodemeyeri (black circles: specimens studied by author; white circles: previously published records, specimens not seen by author), G. zwickianus (squares).

FIGURES 1–6. Habitus of Geodromicus: 1—G. bodemeyeri (Turkey, Kagizman), 2—G. championi (lectotype), 3—G. iranicus (holotype), 4–6—G. zwickianus (Fig. 4: Iran, Qohrud Mts.; Fig. 5: Iran, Küh-e Hezâr; Fig. 6: Turkey, Elmali). Scale bars: 1.0 mm.

FIGURES 7–12. Aedeagus of Geodromicus bodemeyeri (Figs. 7–8: holotype; Fig. 9: Turkey, Kagizman; Fig. 10: Turkey, Bolghar Dagh; Fig. 11: Russia, Naltshik; Fig. 12: Russia, Alagir): 7, 9–12—parameral view, 8—lateral view. Scale bars: 0.1 mm.