A revision of the Old World Polymorphanisini (Trichoptera : Hy dropsychidae) P. C. Barnard Department of Entomology, British Museum (Natural History), Cromwell Road, London SW7 5BD Contents Synopsis 59 Introduction .............. 59 Classification of the Macronematinae 60 Abbreviations 60 Acknowledgements 61 Taxonomic section . . . . . . . . . . . . .61 Tribe Polymorphanisini Lestage 61 Geographical distribution 63 Biology 63 Check-list of Old World Polymorphanisini 63 Key to world genera of Polymorphanisini 64 Oestropsyche Brauer 64 Aethaloptera Brauer 66 Key to species of Aethaloptera .......... 68 Polymorphanisus Walker ............ 78 Key to species of Polymorphanisus ......... 78 The nigricornis-group ......... r .. 79 The ocw/ara-group 98 References 103 Index . .105 Synopsis The Old World species of the tribe Polymorphanisini, with its constituent genera Oestropsyche Brauer, Aethaloptera Brauer and Polymorphanisus Walker, are revised. One new generic and eight new specific synonyms are established; four new species are described. Seven lectotypes and one neotype are designated. Keys are given to the twenty-five species currently recognized. Introduction The Polymorphanisini are one of the most discrete tribes within the Hydropsychidae; although they are superficially very similar to the other species of the subfamily Macronematinae, they have an obvious diagnostic character in the absence of mouthparts. This paper deals only with the Old World species ; the endemic Neotropical genus Synoestropsis is distinguished in the key to genera, but most of its constituent species are dealt with in recent publications by O. S. Flint, Jr (e.g. Flint, 1978). The subfamily Macronematinae was revised by Ulmer (1907) and this remains the basis for any work on this group, Ulmer's monograph being complete for all the literature up to that date. Although many of the species of the tribe Macronematini, especially of Macronema itself, can be readily identified by their wing pattern, the Polymorphanisini are relatively uniform in general Bull. Br. Mus. nat. Hist. (Ent.) 41 (2): 59-106 Issued 25 September 1980
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