Larvae of the North American Caddisfly Genera (Trichoptera)

Caddisflies are one of the most diverse groups of organisms living in freshwater habitats, and their larvae are involved in energy transfer at several levels within these communities. Caddisfly larvae are also remarkable because of the exquisite food-catching nets and portable cases they construct with silk and selected pieces of plant and rock materials. This book is the most comprehensive existing reference on the aquatic larval stages of the 149 Nearctic genera of Trichoptera, comprising more than 1400 species in North America. The book is invaluable for freshwater biologists and ecologists in identifying caddisfly in the communities they study, for students of aquatic biology as a guide to the diverse fauna of freshwater habitats, and for systematic entomologists as an atlas of the larval morphology of Trichoptera. In the General Section, the biology of caddisfly larvae is considered from an evolutionary point of view. Morphological terms are discussed and illustrated and a classification of the Nearctic genera is given. Techniques are outlined for collecting and preserving larval specimens and for associating larval with adult stages. The Systematic Section begins with a key to larvae of the 26 families of North American Trichoptera. Each chapter in this section is devoted to a particular family, providing a summary of biological features and a key to genera, followed by a two-page outline for each genus with illustrations facing text. This outline provides information on general distribution, number of species, distinctive morphological features, and biological data including construction behaviour. An important feature of the book is the habit illustrations of larvae and cases of a selected species in each genus, along with illustrations of details of significant morphological structures. Each generic type is thus presented as a recognizable whole organism adapted in elegant ways to particular niches of freshwater communities. This revised edition includes advances in knowledge on the classification and biology of Trichoptera up to 1993 - an interval of 17 years since the first edition. An additional eight families and thirteen genera are included for the first time. Through reorganization of the families into three suborders, a biological context has been established for the systematic section. Contents 7 Preface to the First Edition 9 Preface to the Second Edition 12 GENERAL SECTION 17 Introduction 17 Classification 22 Morphology 40 Techniques 49 SYSTEMATIC SECTION 57 Key to Larvae of North American Families of Trichoptera 57 1. Family Glossosomatidae 64 2. Family Hydrobiosidae 81 3. Family Hydroptilidae 85 4. Family Rhyacophilidae 124 5. Family Dipseudopsidae 132 6. Family Ecnomidae 137 7. Family Hydropsychidae 140 8. Family Philopotamidae 164 9. Family Polycentropodidae 173 10. Family Psychomyiidae 188 11. Family Xiphocentronidae 199 12. Family Apataniidae 204 13. Family Beraeidae 217 14. Family Brachycentridae 220 15. Family Calamoceratidae 232 16. Family Goeridae 240 17. Family Helicopsychidae 251 18. Family Lepidostomatidae 255 19. Family Leptoceridae 263 20. Family Limnephilidae 282 21. Family Molannidae 366 22. Family Odontoceridae 373 23. Family Phryganeidae 388 24. Family Rossianidae 413 25. Family Sericostomatidae 418 26. Family Uenoidae 427 Literature Cited 441 Taxonomic Index 467