Sigara (Subsigara) fossarum (Leach, 1817)

Material examined. Kazakhstan, Akmola Prov., Shortandy Settlm., 12.VIII.1937, collector unknown, 1 female, T. Jaczewski det. (ZMUM).

Bionomics. This corixid lives in various floodplain water bodies. It can be found among plants in sections of streams or rivers with a weak current, sometimes in peat water bodies(Kanyukova, 2006).

Distribution. The species is known from Northern, Central and Southern Europe, except for the highlands. In European Russia, it is omnipresent; in the north, it reaches the Murmansk and Arkhangelsk provinces; in the south, it is recorded from the North Caucasus and the Orenburg Province. In the Asian part of Russia, it is distributed in Western Siberia (from the Khanty-Mansi Autonomous District to the south of the Novosibirsk Province and to the Altai Republic) and Eastern Siberia (from the middle part of the Krasnoyarsk Territory to Buryatia and Central Yakutia) (Jansson, 1995; Kanyukova, 2006).

Note. The material presented here is the only reliable finding of the species from northern Kazakhstan (Fig. 6). Previously, the species was registered for this territory from the mentioned specimen without specifying the collecting locality (Kanyukova, 2006). The nearest record of S. fossarum is known from the south of the Novosibirsk Province, namely the floodplain of the Chingis River (Kanyukova, 1973), where the species was collected at light on 21–22 June 1960.