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Abstract A fourth species of the Holarctic Ilybius angustior complex, Ilybius minakawai n. sp., is described from the Island of Sakhalin in the Russian far east. Male genitalia are diagnostic within this species complex, although from body size and shape the new species cannot be separated from...
Abstract The species of the genus Mesonemoura from China are keyed. Two species, Mesonemoura nielamuensis sp. n. and M. tritaenia sp. n., are described as new to science, and their relationships are discussed.
Abstract The larva of Diplectrona atra McLachlan, 1878 is re-described and compared with the morphologically very similar larva of D. felix McLachlan, 1878. Information for the identification of both species is given and some zoogeographical and ecological notes are presented.
Abstract The larvae of Propsilocerus lacustris were found at densities ranging from 30 to 150 ind. m−2 in the hypertrophic Lake Syczyńskie, eastern Poland. They burrowed in the top 5 cm of soft sediment at a water depth of ca. 1 m along the reed belt. The sediment was well decomposed, with fair...
Abstract Shivatonia ispartaensis sp. n. from the Taurus Mountains of south Anatolia is described and illustrated in both sexes. The new species is compared to the most closely related taxon, Shivatonia acetabulensis Panesar, 2004. Shivatonia ispartaensis sp. n. is the second known species of the...
Abstract Five species of the genus Hyphydrus Illiger are reported from Myanmar based on the study of recently collected material and literature sources. Data on their ecology and distribution are presented. Hyphydrus schillhammeri sp.n. is described from Shan State of Myanmar and deemed to...
Abstract A new species of Tupiperla, T. jumirim, is described from Chapada dos Veadeiros, northern Goiás State, Brazil. Kempnyia oliveirai is recorded from the same locality.
Abstract The genus Diostracus is reported from Yunnan province of China for the first time. Two species, D. brevabdominalis and D. filiformis, are described and illustrated as new to science. A key to the species of the genus from Yunnan is presented.
Abstract All life stages of Caenis cubensis sp. n. are described. This new species of Caenis from Cuba is closely related to the species of the South American C. argentina and C. pflugfelderi groups.
Abstract Female, pupa, and larva of Oukuriella epleri Messias & Fittkau, 1997 are described and figured. The larvae were collected in freshwater-sponges from Amazonia. We also provide an emended diagnosis for the genus.
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