Duckworth, W. Donald, and Eichlin, Thomas D. The Type-Material of Central and South American Clearwing Moths (Lepidoptera: Sesiidae). Smithsonian Contributions to Zoology, number 261, 28 pages, 1978.—The type-material of Central and South American clearwing moths of the family Sesiidae is reviewed by bringing together all the available data for the 207 species group names applied to this faunal area. Of these 207 names, 50 required lectotype designations, 146 were described from single specimens, and the remaining 11 are lacking in sufficient data to determine the number of specimens included in the original type series. The names are arranged alphabetically by specific name preceeded by the genus in which it was originally described. The following information sequence is presented for each name: original combination; reference to original description; pertinent comments from the original description concerning the number of specimens, sex, locality, collection, and source of the types; exact label data on types, their present location, and number of syntypes examined; and subsequent pertinent comments and actions. OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SERIES COVER DESIGN: The coral Montastrea cavemosa (Linnaeus). Library of Congress Cataloging in Publication Data Duckworth, W. Donald, 1935The type-material of Central and South American clearwing moths (Lepidoptera, Sesiidae) (Smithsonian contributions to zoology ; no. 261) Bibliography: p. 1. Clearwing moths—Classifications. 2 Insects—Classification 3. Type specimens (Natural history) 4. Insects—Central America. 5. Insects—South America. I. Eichlin, Thomas D., 1938joint author. II. Title. III. Series: Smithsonian Institution. Smithsonian contributions to zoology ; no. 261. QL1.S54 no. 261 [QL561.S47] 591'.08s [595.7'81] 77-21104 The Type-Material of Central and South American Clearwing Moths (Lepidoptera: Sesiidae)