Omalium littorale Kraatz, 1857

Omalium littorale Kraatz, 1857 View in CoL

( Figs 3 View FIGURES 1–3 , 5 View FIGURES 4–7 )

Omalium littorale Kraatz, 1857: 980 View in CoL .

Omalium apicicorne Solsky, 1874: 207 View in CoL .

Homalium balassogloi Eppelsheim, 1888: 66 View in CoL . syn. nov.

Omalium balassogloi View in CoL : Luze, 1906: 525.

Omalium bucharicum Bernhauer, 1915: 263 View in CoL syn. nov.

Omalium bucharicum View in CoL : Bernhauer 1923: 180.

Omalium gartneri Coiffait, 1982: 153 View in CoL .

Omalium afghanicum Scheerpeltz, 1963: 21 View in CoL .

Other references see in Herman (2001) and Shavrin (2023a).

Type material examined. Lectotype ( here designated) of Homalium balassogloi Eppelsheim, 1888 ♀ ( Fig. 5 View FIGURES 4–7 ): ‘See Issyk-Kul. | Turkestan. | Akinin.’ <handwritten>, ‘c. Eppelsh. | Steind. d.’ <printed>, ‘Balassogloi Epp. [handwritten in black] | det. Luze [underlined by black]’ <printed>, ‘74.’ <green, handwritten in black>, ‘297’ <handwritten in black>, ‘ LECTOTYPE | Omalium | balassogloi Eppelsheim, 1888 | Shavrin A.V. des. 2025’ <red, printed>, ‘ Omalium | littorale Kraatz, 1857 | Shavrin A.V. det. 2025’ <printed> ( NMW).

Holotype of Omalium bucharicum Bernhauer, 1915 ♀: ‘BUCHARA | Repetek 5.1900. | Coll. Gauser.’ <printed>, ‘bucharicum | Bernh. Typus’ <handwritten in black>, ‘Chicago NHMus | M.Bernhauer Collection ’<printed>, ‘ HOLOTYPE | teste D.J. Clarke2014 | GDI Imaging Project’ <violet, printed>, ‘PHOTOGRAPHED | Kelsey Keaton 2014 | Emu Catolog’ <blue, printed>, ‘FMNHINS | 2819639 | FIELD MUSEUM’ <printed, with barcode on the left side of the label>, ‘ Omalium | littorale Kraatz, 1857 | Shavrin A.V. det. 2025’ <printed> ( FMNH).

The photographs of the habitus and type labels of the holotype are available in Arthropod Collections Database of FMNH (last access: 11.08.2025).

Additional material examined. KAZAKHSTAN: 4 ♂♂, 3 ♀♀: Kujuk Pass, Kara-Tau Mts. 05.1981.A. Pfeffer leg. ( NMPC); 1 ♂: Ili valley, 40 km N Kapchagay. 560 m a.s.l. 04.06.1993.W.Schawaller leg. (cSh); UZBEKISTAN: 15 ♂♂, 21 ♀♀: Chatkal Mts., near Yanghiabad. 2200–2500 m a.s.l. 20– 30.11.2007. V. Gurko leg. (cSch, cSh); 5 ♂♂, 2 ♀♀: Samarkand. Malý leg. ( NMPC); 2 ♂♂: Margilan ( NMPC); 1 ♀: Buchara ( NMPC); KYRGYZSTAN: 2 ♂♂, 4 ♀♀: Kyrgyzskiy Alatau, Ala Artcha. 1650 m a.s.l. 29.10.2000. (cSch); TURKMENISTAN: 1 ♂: Badhyz State Nature Reserve, Mary. 21.04.1993. A. Dostal & P. Cate leg. ( NMW); 1 ♀: Ashkhabad, W Kopet Dagh, 15 km NW Seivan, Alt-Kara Kala. 1100 m a.s.l. 03– 04.05.1993. A. Dostal & P. Cate leg. ( NMW); 1 ♀: same data, 15 km S Seivan, Tutli Kala Pass. 1300 m a.s.l. 02– 03.05.1993. ( NMW); 1 ♀: Cardzou Sayat. 18.04.1993. M. Snizek leg. ( NMW); AFGHANISTAN: 1 ♂: ‘ ♂ ’, ‘J. Klapperich Khanabad, 450 m 10.12.52, Kataghan NO – Afghanistan’, ‘ex. coll. Scheerpeltz’, ‘ TYPUS Omalium afghanicum O. Scheerpeltz’, ‘ Omalium afghanicum nov.sp. ’, ‘ Omalium littorale Kraatz, 1857 Shavrin A.V. det. 2025’ ( NMW); 1 ♀: ‘ ♀ ‘, ‘J. Klapperich Do-Schak, 2500, Khinjantal, 1.10.52’, ‘Hindukush O. Afghanistan’, ‘ex. coll. Scheerpeltz’, ‘ TYPUS Omalium afghanicum O. Scheerpeltz’, ‘ Omalium littorale Kraatz, 1857 Shavrin A.V. det. 2025’ ( NMW); 1 ♂: ‘J. Klapperich Khanabad, 450 m 10.12.52, Kataghan NO- Afghanistan’, ‘ ex. coll. Scheerpeltz’, ‘ TYPUS Omalium afghanicum O. Scheerpeltz’, ‘ Omalium littorale Kraatz, 1857 Shavrin A.V. det. 2025’ ( NMW); 1 ♂: same data as the previous except for several additional labels: ‘COTYPUS Omalium kataghanensis O. Scheerpeltz’, ‘ Omalium kataghanensis nov. sp. ’, ‘MS name det. M.K. Thayer 1989’ ( NMW).

Remarks. Omalium littorale is a widely distributed Western Palaearctic species, and also known from Middle Asia, Afghanistan and Pakistan ( Shavrin 2023a). This species is morphologically variable both in external and internal features, especially in the length of the elytra and hind wings, proportions of the pronotum and the shape of the median lobe ( Zanetti 2006; Shavrin & Khachikov 2023; Shavrin 2023a). Aedeagus as in Fig. 3 View FIGURES 1–3 .

Homalium balassogloi was originally described based on “ 3 Exemplare ” from “See Issyk-Kul”. During the study of the collection of NMW, I found one female ( Fig. 5 View FIGURES 4–7 ) which undoubtedly belongs to the type serie. I designate this specimen as the lectotype. Measurements of the lectotype: HW: 0.45; HL: 0.32; OL: 0.11; TL: 0.07; AL: 0.87; PL: 0.37; PWmax: 0.60; PWmin: 0.52; ESL: 0.73; EW: 0.76; AW: 0.80; BL: 2.28. Based on the details of the morphology of the body, it similar to other studied specimens of O. littorale . Thus, I synonymized it with the latter species.

Omalium bucharicum was originally described based on a single specimen which was collected from “Repetek (Buchara)”. I studied the holotype from the collection of FMNH (see above). Based on the shape and details of the morphology of the body, it conspecific with O. littorale . Thus, it was synonymized with the latter species.