Abstract
Sixteen species belonging to eleven genera viz., Rhopobota Lederer, Acroclita Lederer, Strepsicrates Meyrick Gibberifera Obraztsov, Loboschiza Diakonoff, Crocidosema Zeller, Epinotia Hubner, Helictophanes Meyrick, Acanthoclita Diakonoff, Ancylis Hubner and Eucosma Hubner belonging to the tribe Eusosmini (Olethreutinae) of the family Tortricidae have been collected from northwestern India and dealt with taxonomically. Key to the presently examined genera has been prepared on the basis of characters such as the labial palpi, antennae, costal fold, anal fold, wing venation and male and female fenitalic characteristics. Further, keys to the species of the genera Epinotia Huber and Eucosma Hubner represented by more than one species have also been furnished. Eucosma pseudostrigulata is being reported as new to science. Species such as Rhopobota grypodes Meyrick, Epinotia corynetes Diakonoff, Acanthoclita iridorphna Meyrick and Eucosma prominens Meyrick are being reported for the first time from India, whereas, Acroclita corinthia Meyrick, Gibberifera glaciata Meyrick, Epinotia canthonias Meyrick, Helictophanes dryocoma Meyrick, Ancylis lutescens Meyrick, Eucosma stereoma Meyrick and E. melanoneura Meyrick have been collected for the first time from the area, under reference. Besides giving an illustrated account of the new species, the genitalic account of the already known species have been added to improve their diagnosis.