The taxonomic characteristics of the larval instars are presented for 27 North European species of Corixidae, and keys to the species are given for all genera where identification of the larvae is ...

1. The percentage of organic matter in a subaquatic soil has been shown by Pearsall (1920, 1921) to be an important factor in the distribution of certain species of plant. As the percentage of organic ...

WITHIN the New Zealand species of the families Corixidae and Notonectidae (Hemiptera-Heteroptera), two distinct forms, depending on the development of the wings and the wing-musculature, have been ...

THE Corixidae are a family of aquatic bugs living on the habitat bottom. The front legs of both sexes are used for collecting food, the tarsi (or paleæ) being highly specialized for this purpose.