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The ultrastructural morphology of tibiotarsal spines and tibial spurs varies within the higher taxa (suborders and infraorders) of Trichoptera: Tibiotarsal spines can either be of radial or of bilateral symmetry, true insect hairs can be present or absent on tibial spurs, and the latter bear...
The hydrobiosid genus Costachorema McFarlane, 1939 contains eight species described from adults. Previously, the larvae of only five species have been described and illustrated, four from mainland New Zealand (C. brachypterum McFarlane, 1939, C. callistum McFarlane, 1939, C. psaropterum...
Tupiperla flinti sp. n. from Misiones in Argentina and from southern Paraguay, and T. misionera sp. n. from Misiones are described.
The preimaginal stages of the Neotropical species E. (M.) lampros Knisch, and Enochrus (H.) tremolerasi Knisch, are described and illustrated for the first time. They are compared to the immatures of the Neotropical species E. (M.) vulgaris (Steinheil) and E. (Hugoscottia) scutellaris (Bruch),...
New synonymies are introduced as follows: Pseudhydrovatus Peschet, 1924, junior synonym of Hydrovatus Motschulsky, 1853 and Hydrovatus occidentalis Guignot, 1949, junior synonym of Hydrovatus antennatus (Peschet, 1924), new combination.
Six new species of dobsonflies (Megaloptera: Corydalidae: Corydalinae) from Venezuela are described and illustrated, two in the Neotropical genus Chloronia and four within the New World genus Corydalus. Chloronia contains 15 previously described species. The new species Chloronia gaianii and C....
After a study of the type material of Baetis nexus Navás, 1918 and a comparison with Hungarian specimens of Baetis pentaphlebodes Ujhelyi, 1966 it is concluded that the two nominal species are synonyms and that B. nexus is the valid name.
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