Libor Dvořák

Distribution of Gerris asper and G. lateralis (Hemiptera: Heteroptera: Gerridae) in the Czech Republic

All the available published and unpublished distributional records of two endangered pond skaters, Gerris asper (Fieber, 1860) and Gerris lateralis Schummel, 1832 (Hemiptera: Heteroptera: Gerridae) in the Czech Republic are summarized and mapped. Gerris asper was originally descr...

New records of an alderfly Sialis nigripes (Megaloptera: Sialidae) from the Czech Republic

Sialis nigripes Pictet, 1865 (Megaloptera: Sialidae) was known until now from only nine localities in the Czech Republic, where it has been considered critically endangered. This study presents 49 new records from 35 streams and one fishpond distributed in all the major river bas...