Eur. J. Entomol. 113: 279-294, 2016 | DOI: 10.14411/eje.2016.035

A case study of Heleomyzidae (Diptera) recorded on snow in Poland with a review of their winter activity in Europe

Agnieszka SOSZYÑSKA-MAJ1, Andrzej J. WO¬NICA2
1 Department of Invertebrate Zoology and Hydrobiology, University of £ód¼, Banacha 12/16, 90-237 £ód¼, Poland; e-mail: agasosz@biol.uni.lodz.pl
2 Institute of Biology, Wroc³aw University of Environmental and Life Sciences, Ko¿uchowska 5b, 51-631 Wroc³aw, Poland; e-mail: andrzej.woznica@up.wroc.pl

Twenty eight species of winter-active Heleomyzidae were collected during a long-term study in Poland. More than 130 samples of insects, including Heleomyzidae, were collected from the surface of snow in lowland and mountain areas using a semi-quantitative method. Lowland and mountain assemblages of Heleomyzidae recorded on snow were quite different. Heleomyza modesta (Meigen, 1835) and Scoliocentra (Leriola) brachypterna (Loew, 1873) dominated in the mountains, Tephrochlamys rufiventris (Meigen, 1830) mainly in the lowlands and Heteromyza rotundicornis (Zetterstedt, 1846) was common in both habitats. Heleomyzidae were found on snow during the whole period of snow cover, but the catches peaked from late November to the beginning of February. In late winter and early spring the occurrence of heleomyzids on snow decreased. Most individuals were active on snow at air temperatures between -2 and +2.5°C. A checklist of 78 winter active European Heleomyzidae is presented. Helomyza nivalis Wahlgren, 1918 is herein considered as a new junior synonym of Helomyza caesia Meigen, 1830, syn. n.

Keywords: Diptera, Heleomyzidae, Europe, Poland, winter activity, snow fauna, phenology, review

Received: August 26, 2015; Accepted: January 27, 2016; Published online: March 24, 2016

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