The New World species of the subgenera Allotrichoma Becker and Neotrichoma (new subgenus) (genus Allotrichoma) are revised. For phylogenetic perspective to this revision, we studied all genus-group taxa within the tribe Hecamedini and reassessed their cladis-tic relationships. Our phylogenetic study for taxa within the genus Allotrichoma was done at the species-group level, and we attempted to approach this globally by examining species from throughout the world and placing them into appropriate species groups. With-in Allotrichoma, we recognize three subgenera. All known species from the New World are described with an emphasis on structures of the male terminalia, which are fully illustrated. We more than double the number of species known from the New World with six of 12 species in the subgenus Allotrichoma being described herein, and in a newly described subgenus, Neotrichoma, two of the three species from the New World are also described.

The Black Hills, straddling the border between southwestern South Dakota and northeastern Wyoming, represent an ecological "island" of mountainous terrain in the midst of the Great Plains. Streams, rivers, lakes, and ponds are abundant, yet the aquatic insect fauna inhabiting those ecosystems has not previously been compiled in a single document. This work demonstrates that the known fauna of 95 families, 335 genera, and 447 species-level aquatic insect taxa has a curious mix of eastern, western, northern, and southern biogeographic affinities, yet many significant data gaps remain, and this work can only represent a starting point. The Black Hills beckon more curious naturalists to come and add to our knowledge.

The only book to deal comprehensively with insect feeding was published by C. T. Brues in 1946. His Insect Dietary was an account of insect feeding habits. Since that time there has been a revolution in biology, and almost all aspects of our understanding of insect feeding have expanded to an extent and into areas that would have been unthinkable in Brues' day. Yet, our book does not replace Insect Dietary but, instead, complements it, because our aim is to bring together information on the mechanisms by which food quality and quantity are regulated. We deliberately focus attention on the feeding process; to include food-finding would have required a much larger book and would have moved the focus away from more proximate mechanisms. This book is dedicated to the late Vincent G. Dethier. As a pioneer in studying the physiological basis of animal behavior, he focused on regulation of feeding in flies and caterpillars. His work on the blowfly, together with that by his many students and co-workers, still provides the most completely described mechanism of insect feeding. The citation of his work in almost every chapter in this book illustrates the importance of his findings and ideas to our current understanding of regulation of insect feeding. The authors in this book provide many innovative and stimulating ideas typifying Dethier's approach to the study of feeding be havior.

This revision comprehensively documents the New World species of the shore-fly genus Gymnoclasiopa, which primarily has a Holarctic distribution, including some species that are found in both the Nearctic and Palearctic Regions. Discovering additional species common to both biogeographic regions was an objective of this study, as was unraveling any nomenclatural issues that resulted when the same species was described separately in both biogeographic regions. Ten species are treated, including two that are newly described. The authors also document the obvious sexual dimorphism that is evident in some species but which was not previously appreciated, resulting in confused concepts of some species. The authors emphasize structures of the male terminalia, which are fully described and illustrated, in the recognition of species. In addition, detailed locality data and distribution maps for all species are provided. Much of this increase has resulted from a greatly improved sampling of the New World fauna, documenting the ongoing need for field work and better taxon sampling of the earth?s shore-fly fauna.