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Skwala natorii, a new species of stonefly, is described from both sexes and nymphs collected in Central Japan (Nagano Pref.). Eggs of the species are shown on SEM photomicrographs.
The genus Harnischia from China is revised. Harnischia cultriata sp.nov. is described as new to science from the male imago. H. hamata Wang et Zheng is recognized as new synonym of H. angularis Albu et Botnariuc and H. longispuria Wang et Zheng is recognized as a new synonym of H. curtilamellata...
Delayed egg hatching can influence the survival of aquatic insects by reducing exposure to competitors, predators, parasites, or unfavorable environmental conditions. We examined egg development in a Colorado population of the stonefly, Megarcys signata (Plecoptera: Perlodidae), whose larvae...
The life cycle of the zygopteran odonate Lestes viridis in two seasonal streams in the Sierra Morena Mountains is inferred from size-frequency analyses of handnet samples of larvae and records of presence and reproductive activity of adults during three consecutive years. The egg stage (duration...
The recent proposal that the cluster of closely related species with minnow-like larvae, known as Afroptiloides, should be synonymised with the unique baetid genus Acanthiops, which has a crawling type of larva, is critically examined. The synapomorphies cited as evidence of recent common...
The male adults Tanytarsus monospinosus sp. n. and Tanytarsus tumultuarius sp. n. from Brazil are described as new to science, and the species Tanytarsus abnormis Lehmann is transferred to Neostempellina Reiss. The species share the reduction of the median volsella, a genital feature well...
A new species of Psychodidae, Arisemus stylofurcatus from Nicaragua, is described. The morphology of both male and female and notes on their biology are offered.
Hydroptilid species are described from Lord Howe Island for the first time. All four species are in the endemic Australian genus Orphninotrichia, and all are endemic to Lord Howe Island. Modifications exhibited by these new species to the normally conservative Orphninotrichia features are...
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