A SYNONYMIC LIST OF THE GENUS NACADUBA AND ALLIED GENERA (LEPIDOPTERA: LYCAENIDAE) By G. E. TITE CONTENTS Page INTRODUCTION ..... 69 NACADUBA MOORE . . 70 PROSOTAS DRUCE . . 88 PARADUBA BAKER . . 97 IONOLYCE TOXOPEUS ... 100 ERYSICHTON FRUHSTORFER .... ... 102 CA TOP YROPS TOXOPEUS . .105 PETRELAEA TOXOPEUS 109 REFERENCES . . ... . .109 INDEX ... . . . -113 SYNOPSIS The species of Nacaduba are listed according to their relationships. In particular the grouping of species and subspecies from the Papuan region, hitherto confused, has been corrected, as the result of examination of the type specimens described by Lord Rothschild, Fruhstorfer, and others. Ten new species and nineteen new subspecies are described. INTRODUCTION THE Indo-Malayan representatives of Nacaduba have been ably dealt with by Toxopeus, Corbet, and Eliot, so that probably little remains to be discovered about the specific relationships of the races from that region. Study of the material in the British Museum (Natural History), however, reveals a very different situation as regards the more eastern portion of the Indo-Australian region, especially in respect of that from New Guinea, the Bismarck Archipelago, and the Solomon Islands. Investigation of the types shows that most of the insects described as species by the late Lord Rothschild have by various authors been assigned as subspecies to quite unrelated species ; this, and the discovery of a number of species new to science, renders the present work desirable. The presence in the B.M. (N.H.) of most of Fruhstorfer's types has facilitated the correct specific grouping of the races he described. Toxopeus has shown (1929) that the genus Nacaduba can be conveniently divided into smaller units, and has given these units generic rank ; with some modifications this system is followed here, consideration being given to the male genitalic structures and to the slight differences in venation. Dr. Corbet (1938) deprecates the division of Nacaduba and gives as one reason the fact that the females of the berenice and nova groups cannot be separated on differences of vena-ENTOM. 13, 4 7
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