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All stages and both sexes of Cryophila lapponica Bergroth are redescribed. Cryophila Bergroth holds a crucial position in the interrelationship of the chaoborid genera with ta1 half as long as ta2 and a toothed larval mentum. Fifty anagenetic trends for the chaoborid genera are outlined and the...
Short‐term static bioassays were conducted in duplicate to determine sublethal effects of fluoride in soft water (hardness average value of 15.6 mg CaCO3/I) to larvae of Hydropsyche bulbifera, H. exocellata, H. lobata, H. pellucidula and Chimarra marginata (Trichoptera, Insecta). Last instar...
The differential characters (body length; pronotal shape; shape, claval apparatus and coloration of forewings; shape and venation of hindwings) of both brachy‐ and macropterous adults of Cymatia coleoptrata (Fabricius, 1776) from Central Europe are described, figured and compared with available...
The recent description of Drunella andaluciaca Kazanci, 1990 (from the Sierra Nevada Mountains in southern Spain) was compared with the original description and with typical and additional material of Ephemerella (Chitonophora) nevadensis Alba‐Tercedor, 1983 (a species widespread in the Sierra...
The larva and pupa of Apatania praevolans Morse are described and compared with those known of other North American species. The dorsal and lateral humps on abdominal segment I of the larva of A. praevolans are absent; the tergite on abdominal segment IX is triangular and bears two long setae....
Mesyatsia makartchenkoi sp. n. from Southern Primorye, Soviet Far East, is described and illustrated. The new species is compared with the other species of this genus.
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