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The winged stages of Rhithrogena diaphana Navâs, 1917 are redescribed and drawn on the basis of fresh material collected not far from the type‐locality. The winged stages, the eggs and nymphs of three new species of the diaphana‐group are also described and illustrated: R. beskidensis sp.n., R....
The Indian Pericomini, mainly Himalayan species from over 2000 m belonging to Thornburghiella Vaillant, are briefly reviewed. It is suggested that the Himalaya provides conditions at intermediate altitudes that might be expected to favour continued survival of Gondwanian elements and that...
The author describes a further species of Lacconectus, L. loeiensis sp.n. from Thailand. The parameres and aedeagus are illustrated. This species is the third known to occur in Thailand. It brings the total number of described species to 39.
Two new species of Miroculis are described and new country records reported for Miroculis fittkaui Savage & Peters and Microphlebia surinamensis Savage & Peters based upon male imagines from Cerro de la Neblina, Venezuela. Subgeneric placement of these two new species, one in Miroculis...
Lectotypes for Baetis zebrata Hagen, 1864 and B. fallax Hagen, 1864 are designated. Both species are redescribed from fresh and type material. They are transferred to the recently described genus Electrogena Zurwerra & Tomka, 1985.
The genus Catoxyethira is new for Guinea. Two species, C. elouardi and C. leynarti are described for the first time. Seven other species are reported from this country.
Associated blackfly larvae of Simulium argenteostriatum (Strobl) and Prosimulium hirtipes (Fries) were collected in the Säntisthur, a mountain stream in the eastern part of the Swiss Alps. The overall body length, the head capsule length and the width were measured to assign the larvae to three...
Neoperla nangina Navas, 1929 is a synonym of Tetropina larvata Klapalek, 1909, and not of Etrocorema nigrogeniculatwn (Enderlein, 1909), as erroneously published by Zwick (1986).
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