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The life history and secondary production of E. torrentium were investigated at three sites along a small Spanish stream. This species had an univoltine winter life history with recruitment from June to November. It showed asynchronous development, which is consistent with the unpredictable...
The paper presents descriptions of the hitherto unknown larva and pupa of Ceraclea riparia (Albarda, 1874). Information for the identification of this species is given, and the most important diagnostic features are illustrated. Some notes on the species’ distribution in Europe as well as on...
A new species of peltoperlid, Yoraperla altaica sp. n., from East Kazakhstan is described as adult male, adult female, mature nymph and egg stages. The new species is compared with related congeneric species.
Hemerodromia wagneri sp. n., a new aquatic dance fly (Diptera, Empididae: Hemerodromiinae) from Spain is described, illustrated, and its taxonomic position is discussed.
Emended diagnoses of all stages of the subgenus Symposiocladius Cranston of the genus Orthocladius v. d. Wulp are given. The male imagines of the subgenus share absence of virga, collar-like superior volsella, and ventral part of inferior volsella not extended prominently below dorsal part. The...
The synonymy of Notonecta (Paranecta) virescens Blanchard 1852, N. (P.) bicirca Hungerford 1926 and N. (P.) bicircoidea Hungerford 1928 is established on examination of the type material. The following diagnostic characters, herein illustrated, are similar in all the specimens examined: the...
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