Omalium strigicolle Wankowicz, 1869

Shavrin, Alexey V., 2025, Review of the genus Omalium Gravenhorst, 1802 (Coleoptera: Staphylinidae: Omaliinae: Omaliini) of Siberia and Far Eastern Russia, with notes on some species from Mongolia and Japan, Zootaxa 5646 (2), pp. 199-235 : 225-227

3.2.4.9. Omalium strigicolle Wankowicz, 1869

( Figs 18 , 42 , 48–49 )

Omalium strigicolle Wankowicz, 1869: 419 .

Omalium lagopinum J. Sahlberg, 1871: 426 .

Omalium brevicolle Thomson, 1884: 1033 .

For other references see Herman (2001a).

Material examined. KHANTY-MANSI AUTONOMOUS REGION: 1 ♀: Yuganskiy Reserve (buffer zone), flood-plain of a rill (confluent of Malyi Yugan River ) near Achimovy-2 village, tussocks of Carex spp. and Poaceae , depressions with Carex rostrata , Filipendula ulmaria , Comarum palustre , Urtica dioica , Sphagnum centrale , Climacium dendroides , Plagiomnium sp. , Rubus saxatilis , Salix sp. , sparse Betula and Picea . 24.08.2003. A.B. Ryvkin leg. (cSh); 1 ♀: Surgutskiy District, near Ugut, basin of Ugutka River . In geophilous fungi. 20.08.1998. A.B. Ryvkin leg. (cR); 1 ♀: same District, Yuganskiy Reserve, Malyi Yugan River , near cordon up-stream of mouth of Lyarykni River . In geophilous and arboreal gill fungi in forest. 15.08.2003. A.B. Ryvkin leg. (ZMM); 1 ♀: same District and Reserve, Basin of Ay-Magromsy River , “Medvezhiy Ugol” cordon. In geophilous and arboreal gill fungi (+12°C). 16.09.2002. A.B. Ryvkin leg. (ZMM); TYUMEN AREA: 1 ♀: Uvatskiy District, 10 km S Gornoslinkino, near Tobolsk Field Research Station of Severtsov Institute. Litter and mosses under Abies, Betula , Tilia with Maianthemum , grasses, Oxalis etc. on a steep slope at bank of Irtysh River up-stream mouth of Missiinka River . 10.09.2003. A.B. Ryvkin leg. (ZMM); KRASNOYARSK TERRITORY: 3 ♂♂, 6 ♀♀: Turukhanskiy Distrtict, upper reaches of Nizhnyaya Lebedyanka River . 21.06.1992. V.B. Semenov leg. (cSh, ZMM); 1 ♀: same data, 3 km up-stream of mouth. 17– 18.08.1992. V.B. Semenov leg. (cSh); 1 ♀: same data, up-stream of Nizhnyaya Lebedyanka River . 18.06.1992. V.B. Semenov leg. (ZMM); 2 ♂♂, 4 ♀♀: same data. Evening flying near water and trap with rotten fungi etc. 17.06.1992. (cSh, ZMM); 4 ♀♀: same data. Trap with rotten potato at bank of the river. 18.06.1992. (ZMM); 2 ♂♂, 4 ♀♀: same data. Trap with cow dung in forest with Pinus sibirica . 19.06.1992. (cSh, ZMM); 1 ♂: same District, Nizhnyaya Sarchikha near Kamenka River mouth. 150–200 m a.s.l. 08– 11.07.1992. V.B. Semenov leg. (cR); 1 ♂: same District, Bor. 40 m a.s.l., collected on the fly. 14.05.1992. V.B. Semenov leg. (cR); 1 ♀: same District, Yeloguy Nature Refuge, Yeloguy River , 6 km below Tyna R., mouth. Under mosses with dog excrements in forest with Pinus sylvestris . 29.07.1992. V.B. Semenov leg. (ZMM); 1 ♂, 1 ♀: same District, Central Siberian Biosphere Reserve, Bol`shaya Varlamovka River basin, middle reaches of Bol`shaya Raskosaya River . Swamp with Sphagnum spp. , Oxycoccus sp. , Betula? nana , dead grass. 23.05.1992. V.B. Semenov leg. (ZMM); 1 ♀: Baykitskiy District, Central Siberian State Resrve, Stolbovaya River basin: lower reaches of Birapchana River near mouth of Kruten’kiy Stream. 110 m a.s.l., loamy river bank with Salix sp. , dead Poaceae gen. spp. etc., in drift. 23.06.1993. V.B. Semenov leg. (cSh); 2 ♂♂, 2 ♀♀: Yermakovskiy District, Sayano-Shushenskiy Nature Reserve, Bolshiye Ury River , 4 km up-stream of Ottug-Suuk River mouth. 860 m a.s.l., horse dung on the forest trail. 18.05.1989. A.B. Ryvkin leg. (cR); 1 ♀: same District, valley of Us River, 152th km of Kyzyl-Abakan route, gorge of stream (right tributary of Us River ). Sphagnum spp. , sparse Salix sp. , Picea obovata , grasses, Equisetum sp. ( He + Hm ?). 13.08.1984. A.B. Ryvkin leg. (ZMM); EVENKIA: 1 ♂, 1 ♀: Baykitskitskiy District, Podkamennaya Tunguska River, 235 km up-stream of mouth, mouth of Khagdasis River . Litter and mosses on a steep rock slope with Picea , Pinus sibirica, Betula , Abies , Pyrola , Majanthemum , Linnaea , Vaccinium citis-idaea etc. 19.08.1990. A.B. Ryvkin leg. (cSh); 1 ♀: same District, Central Siberian Biosphere Reserve, Podkamennay Tunguska River , Stolbovaya River mouth. In gill and arboreal fungi. 11.09.1988. A.B. Ryvkin leg. (cR); 1 ♂, 1 ♀: same Reserve, Stolbovaya River basin: lower reaches of Birapchana River near mouth of Kruten’kiy Stream. 110 m a.s.l, loamy river bank with Salix sp. , dead Poaceae gen. spp., etc., in drift. 23.06.1993. V.B. Semenov leg. (cSh); TUVA: 1 ♂: Todzhenskiy District, Toora-Khem village. 900 m a.s.l. Evening flying in the yard and in the garden. 04.06.1992. A.B. Ryvkin leg. (cSh); BURYATIA: 1 ♀: Okinskiy District, valley of Khelgin River , 52°31.132’N 98°49.449’E. 2172 m a.s.l. 23.06.2017. I.V. Enushchenko leg. (cSh); 1 ♂: Bauntovskiy District, Baysa, bank of Vitim River . Under stone. 11.08.1969. V.V. Zherikhin leg. (cR); 1 ♀: same District, Vitim River basin, Romanovka. 17.06.1969. A.P. Rasnitsyn & V.V. Zherikhin leg. (cR); YAKUTIA : 1 ♂, 1 ♀: Srednekolymsk. 12.07– 10.08.1991. S.K. Alekseev leg. (cSh); AMUR AREA: 1 ♀: Skovorodinskiy District, left side of Urka River , about 4 km N Yerofey Pavlovitch, 54°00’40.89’’N 121°57’43.75’’E. 525 m a.s.l. 26–28.08– 02– 03.09.2014. A.V. Shavrin & I.V. Enushchenko leg. (cSh); 1 ♂: Selemdzhinskiy District, Norskiy Reserve, Nora River basin, 1.5–2 km up-stream of Gryashchinskaya Mt. , 235 m a.s.l., between hut and lake, in sparse burnt birch-aspen-larch forest, under? Pleurotus sp. + fungus #8 on high birch stub. 10.09.2008. E.M. Veselova & A.B. Ryvkin leg. (ZMM); 1 ♂: same District, Byssa River basin, bottom part of mountainside NW of “Tyoplyi Klyuch” spa, 380 m a.s.l., evening flight. 22.06.2007. E.M. Veselova & A.B. Ryvkin leg. (ZMM); KHABAROVSK TERRITORY: 3 ♂♂, 3 ♀♀: Verkhnebureinskiy District, near Niman cordon of Bureinskiy Nature Reserve , N 52°08.48’ E 134°13.54’, 1035 m a.s.l., mushroom bait (flotation). 18.08.2008. A.B. Ryvkin leg. (cR, cSh); 1 ♀: same District, Bureinskiy Nature Reserve near “Strelka” cordon, 560 m a.s.l., in geophilous gill fungi, moss and leaf litter under those. 15.09.2006. A.B. Ryvkin leg. (cR); 1 ♀: same District, Dublikanskiy Nature Refuge, Orodzhimen Stream 1 km up-stream of mouth, 370 m a.s.l., mosses and litter under Alnus sp. , Salix spp. , Larix gmelinii, Betula spp., Picea ajanensis , Abies nephrolepis , with Poaceae gen. spp., Filipendula palmata , Spiraea spp. , Sorbaria sorbifolia , Carex spp. , Plagiomnium sp. , Sphagnum spp. , Hylocomium splendens etc. 04.09.2009. A.B. Ryvkin leg. (cR); MARITIME PROVINCE: 1 ♂: Sikhote-Alin Nature Reserve, Kabaniy Klyuch , 45°07’N 135°52’E. 500 m a.s.l., window traps. 24– 27.04.2015. D.E. Shcherbakov leg. (cR).

Remarks. The Holarctic O. strigicolle is widely ditributed in eastern Siberia and Russian Far East ( Schülke & Smetana 2015). It was recorded from Irkutsk Area ( Anishchenko & Shavrin 1998; Shavrin 2010), Buryatia ( Ananina & Voincov 2006), Yakutia ( Poppius 1904b) , Magadan Area ( Ryabukhin 1999, 2002), Kamchatka Territory ( Lobkova & Semenov 2014; Lobkova et al. 2017) and Commander islands ( Sazhnev 2018). Shavrin (2010) misidentified some specimens of this species, which are actually O. caesum , from Turukhanskiy District of Krasnoyarsk Territory. All specimens from Irkutsk and Chita areas provided by Shavrin (2010) as O. subsolanum were misidentified and belong to O. strigicolle . Smetana (1968) recorded it from Mongolia. Habitus as in Fig. 42 . Aedeagus as in Figs. 48–49 . Female accessory sclerite as in Fig. 18 .

It is here recorded from Khanty-Mansi Autonomous Region, Tyumen Area, Krasnoyarsk Territory, Evenkia, Tuva, Amur Area and Khabarovsk Territory for the first time.

Figures

FIGURES 10–19. Female accessory sclerite (Figs 10, 12, 14–19) and spermatheca (Figs 11, 13) of Omalium: 10–11—O. curtipenne, 12–13—O. diffine, 14—O. golovatchi, 15—O. japonicum, 16—O. kurilicum, 17—O. longicorne, 18—O. strigicolle, 19—O. subsolanum. Scale bar: 0.1 mm.

FIGURES 41–43. Habitus of Omalium: 41—O. scabrum (paratype), 42—O. strigicolle (Russia: Maritime Province, Sikhote- Alin Nature Reserve), 43—O. clavatum (lectotype). Scale bar: 1.0 mm.

FIGURES 44–49. Aedeagus of Omalium (Figs 44–47—O. subsolanum (Figs 44–45—Russia: Buryatia, valley of Irkut River; Figs 46–47—Japan:Ashiyasu-mura), Figs 48–49—O. strigicolle (Russia:AmurArea, Norskiy Reserve)): 44, 46, 48—aedeagus, parameral view, 45, 49—aedeagus, lateral view, 47—apical part of median lobe, lateral view. Scale bar: 0.1 mm.