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A revision of the Limnius perrisi subspecies group in the Iberian Peninsula is presented. Limnius perrisi subcarinatus (Sharp, 1872) is a new synonym of Limnius perrisi carinatus (Pérez-Arcas, 1865). Morphological variability related to some elytral interstriae corresponds to a geographical...
The nymph, female subimago and egg of Prosopistoma pearsonorum sp. n. are described from localities in far north Queensland, Australia. This is believed to be the only species of Prosopistoma known from Australia, the previous record of P. sedlaceki Peters being a misidentification.
Three new Annitella species (Trichoptera, Limnephilidae, Chaetopterygini) from the Iberian Peninsula, Annitella amelia sp.n. (Portugal), A. cabeza sp.n. (Spain) and A. lalomba sp.n. (Spain) are described. Psilopteryx (Acropsilopteryx) esparraguera Schmid, 1952 and Psilopteryx sanabriensis...
Procladius choreus (Meigen) emerge during the period from April to October in central Japan, in which air temperatures range from 12.0 to 32.0°C. Body size of adults decreased as the temperature exposure at immature stages increased. The smallest male, which was obtained in summer, was reduced...
Differences in interference competition between larvae of the damselfly Lestes viridis (Vander Linden) were examined using caudal lamellae status of exuviae. Exuviae from a small temporary fishless pond near Antwerp (Belgium) where L.viridis was the only odonate present were studied. No lamellae...
Chironomus tepperi Skuse were reared individually at a range of constant temperatures from 12.5 to 37.5°C (2.5°C intervals), with development and survival monitored at regular intervals. C. tepperi is protandrous, with males developing significantly faster than females at the majority of...
Two new species of Caddisflies from the Great Basin region in California and Nevada are described. Lepidostoma castalianum sp. nov., collected at a spring in the White Mts. of Mono Co., California, is closely related to L. verodum Ross. L. ojanum sp. nov., collected at three separate springs in...
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