Flint, Oliver S., Jr. Studies of Neotropical Caddisflies, XVIII: New Species of Rhyacophilidae and Glossosomatidae (Trichoptera). Smithsonian Contributions to Zoology, number 169, 30 pages, 91 figures, 1974.-Forty-six new species and two new subspecies of Rhyacophilidae and Glossosomatidae are figured and described from South and Central America, Mexico, and Hispaniola. They are placed in the following genera: Atopsyche (10 species), Australochorema (1 species), Rheochorema (1 species), Antoptila (1 species), Cariboptila (3 species), Culoptila (3 species), Mastigoptila (1 species), Mexitrichia (8 species), Mortoniella (1 species), and Protoptila (17 species and 2 subspecies). OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SI PRESS NUMBER 5012. SERIES COVER DESIGN: The coral Montaslrea cavernosa (Linnaeus). Library of Congress Cataloging in Publication Data Flint, Oliver S., Jr. Studies of neotropical caddisflies, XVIII.

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The Trichoptera or caddisflies are one of the panorpoid orders of insects closely related to the Mecoptera and Lepidoptera. The adults are quite mothhke in appearance, but their wings are generally covered with hairs rather than scales as in the Lepidoptera. They are holometabolous with their larval and pupal stages aquatic or, in a few cases, subaquatic or terrestrial. The larvae are most frequently noticed because of theh habit of constructing some sort of shelter, which in certain families is a basically tubular case that encloses most of the body and that is carried around by the larvae as they wander over the substrate. The larvae of other families construct silken retreats that are fixed to the substrate and that serve to trap food particles from the flowing water.