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Keys are given to males and females of 12 species of Cloeon known from Eastern Africa, including descriptions of C. amaniensis sp.n. and C. tanzaniae sp.n.. The new genus Rhithrocloeon presumed to be a torrential form, is defined in terms of the character of the male forceps and the proportions...
ORDISH, R. G.: Hydraenidae (Insecta: Coleoptera). ‐ Fauna of New Zealand 6, 56 pp; SIPC, DSIR, P.O. Box 9741, Wellington, 1984; ISBN 0–77–06747–6; NZ$7.50 + $ 1.50 surface mail postage (airmail on request). WIEDERHOLM, T. (1983): Chironomidae of the Holarctic region Keys and diagnoses Part 1...
Donacia cinerea larvae pass through four instars. Emergence takes place mainly during June and July, but some imagines emerge in October and November. Imagines are found in their pupal cocoons up till nine months prior to emergence, and this may be an adaptation to withstand poor oxygen...
The European species of the genus Heleodromia (Diptera, Empididae) are revised. Descriptions and drawings of the following species are provided: H. immaculata Haliday, H. irwini sp.n., H. oldenbergi sp.n., H. schachti sp.n., H. pectinulata (Strobl), and H. banatica sp.n.. For the last two...
A new species, Cricotopus (C.) pyrus is described from Paro and Thirapu (Bhutan) and with this the number of species in the genus is raised to eighteen from the Oriental Region.
Leuctra brachyptera a short winged late autumn species, is described from Anatolia, Turkey. It holds an isolated position within the genus Leuctra.
Summer diapause in Allocapnia pygmaea usually occurs in the fourth instar, and is followed by thirteen post‐diapause instars. There are four distinct growth phases that correspond with the pre‐diapause, diapause, immediate post‐diapause, and late instar stages. There is some evidence that a...
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