Microvelia (Microvelia) buenoi Drake, 1920

Material examined. Martovce, Žitava River [alluvia], 47°51′38″N, 18°08′25″E, 106 m a.s.l., 26.ix.2014, 1 ♀ (apterous), lgt. & det. P. Kment (coll. National Museum, Prague, Czech Republic).

Remarks. The species was found in heavily vegetated river alluvia in species-rich assemblages of aquatic invertebrates including the following water bugs: Nepa cinerea, Hesperocorixa linnaei, Sigara striata, Cymatia coleoptrata, Ilyocoris cimicoides, Notonecta glauca, Plea minutissima, Hydrometra gracilenta, Microvelia reticulata and Gerris argentatus .

Distribution. This Holarctic species is distributed from the United Kingdom to northern China, Canada and northern United States. The southern boundary in Europe is delineated by France, Germany, Austria, Hungary, Romania and Ukraine; it is absent in southern Europe (Putshkov & Putshkov 1996, Rabitsch & Zettel 2000, Aukema et al. 2013, Kment et al. 2013, Berchi & Kment 2015). The species prefers shaded littoral zones of ditches, marshes and ponds, where it is particularly abundant among emergent macrophytes and submerged branches of shore vegetation (Wróblewski 1980, Aukema et al. 2002). Kurzatkowska (1999) considered M. buenoi a tyrphophilous species, inhabiting various dystrophic, polyhumic waters, especially in forests.