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Abstract The genus Rhagosmittia gen. n. is described based on Spaniotoma (Smittia) maculiventris Edwards, originally collected and described from the Marquesas Islands in French Polynesia. The genus differs from all other chironomids by having a fissured tergite IX, with spatulate median...
Abstract Ithytrichia is a small genus of Hydroptilidae, recorded from Europe, North America, and north Central Mexico. The first record of Ithytrichia for South America is presented here. A new species of this genus Ithytrichia ferni is described from northwestern Argentina. Diagnostic...
Abstract This paper presents the description of the hitherto unknown larva of Polycentropus schmidi Novak & Botosaneanu, 1965. Information on the morphological identification of this species is given, and the most important diagnostic features are illustrated. A synoptic determination key for...
Abstract The previously unknown pupa of Calamoceras illiesi Malicky & Kumanski, 1974 is described and illustrated, based on material collected from northwestern Turkey. It is compared with Calamoceras marsupus Brauer, 1865, the second species of the genus Calamoceras found in western Europe. The...
Abstract The pupa of Nebrioporus (Zimmermannius) ceresyi is described and illustrated at S.E.M. on the basis of a female specimen collected on the Island of Pantelleria (Italy, Sicilian Channel, central Mediterranean). The morphology and chaetotaxy of this pupa are compared to those of the other...
Abstract Eleven morphometric, geometric, and/or biomechanical parameters are developed and presented as quantitative descriptors of dytiscid mandibles. These include arc, angle of attack, maximum camber, position of maximum camber, basal angle, and abductor and adductor gear ratios. This...
Abstract Thirteen species of the genus Parapoynx Hübner (1825) are recognised from China, including P. qujingalis, a new species described herein. A key to the Chinese species is provided. The adults of the new species and the genital structures of all examined species are illustrated.
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