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Abstract The nymph of a new genus and species, Indocloeon primum gen.n., sp.n. from Sri Lanka is described, distinguishing characteristics are illustrated. This new genus is most closely related to Cloeon Leach and Centroptilum Eaton. Indocloeon gen.n. possesses a unique combination of...
Abstract Ephemera hispanica Navás, 1903 has been considered a doubtful species until recently. It is shown to be a long established synonym of E. vulgata Linnaeus, 1758.
Abstract The generic diagnosis of the male imago of a new genus of the subfamily Orthocladiinae (Chironomidae), Saetheriella is given. The genus is characterized by protruding, hairy eyes; antenna with straight, apical seta; antepronotum reduced; squama without setae; Cu1 distinctly downcurved;...
Abstract 1. The gravel substratum of a recirculating stream channel, sited in southern England, supported a population of P. flavomaculatus larvae. A short summer generation was followed by an overwintering generation with extended periods of recruitment and pupation. 2. The highest population...
Abstract The instar number of ten Australian stonefly (Plecoptera) species representing three families (Gripopterygidae, Eustheniidae, Austroperlidae) was found to range from 10–14. The conformance with Dyar's (1890) rule of the individual species was also determined and is discussed in terms of...
Abstract The first stage larvae of two species of Psychodidae Psychodinae of the tribe Pericomini, Bazarella atra (Vaillant) and Tonnoiriella pulchra (Eaton), are described and compared to the larvae of the same stage known to this day. The second stage larva of Tonnoiriella pulchra is described...
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