io A. WATSON 



organ equipment between the siblings Emurena lurida Felder and E. fernandezi sp. n. 

 therefore may not be matched by a similar difference in their ability to chemically 

 stimulate their mates. Varley (1972, personal communication) has made the 

 interesting suggestion that where mating difficulties have arisen between two closely 

 related sympatric species, it might be genetically simpler to lose the male scent- 

 organs in one of the species concerned — an explanation which may apply to lurida 

 and fernandezi. In this situation it would be necessary for the organ-less species 

 [lurida) to employ alternative methods of scent transference. Whether lurida has 

 sucessfully achieved this is doubtful; if lurida is a rare species, as indicated by its 

 rarity in collections, it could be argued that while the loss of male scent-organs 

 may have inhibited wasteful cross-mating with fernandezi it may also have de- 

 creased the number of successful matings between male and female lurida. 



EARLY STAGES 



Little seems to be known about the life-history or early stages of the majority 

 of non-Holarctic Arctiidae. The 149 species mentioned in the present paper are 

 no exception. Only one species is known from the larva, Disconeura inexpectata 

 (p. 70) ; its dorsal hairs have irritant properties. 



ABBREVIATIONS OF DEPOSITORIES 



BMNH British Museum (Natural History). 



CM Carnegie Museum, Pittsburgh, U.S.A. 



LACM Los Angeles County Museum, U.S.A. 



MNHU Museum fiir Naturkunde der Humboldt-LTniversitat, Berlin, Germany. 



NM Naturhistorisches Museum, Vienna, Austria. 



NR Naturhistoriska Riksmuseet, Stockholm. 



UCV Universidad Central de Venezuela, Maracay, Venezuela. 



UM University Museum, Oxford, England. 



USNM Smithsonian Institution, National Museum of Natural History, Washington, D.C., 



U.S.A. 



ZSBS Zoologische Sammlung des Bayerischen Staates, Munich ,West Germany. 



ACKNOWLEDGEMENTS 



Completion of this paper would have been impossible without the loan of material 

 from the institutions listed above and from private collections. These loans were 

 arranged through the kindness of Mr H. K. Clench, Dr W. Dierl, Mr J. P. Donahue, 

 Dr F. Fernandez Yepez, Dr H. J. Hannemann, Dr F. Kasy, Mr H. R. Pearson, 

 Mr E. Taylor, and Dr E. L. Todd. I am grateful for information and advice to 

 Dr M. C. Birch, Professor K. S. Brown, Dr R. E. Dietz, Mr J. P. Donahue, Dr F. 

 Fernandez Yepez, Mr D. S. Fletcher, Dr E. L. Munroe, Dr I. W. B. Nye, Dr P. I. 

 Persson, Dr K. S. O. Sattler, Dr E. L. Todd, Mr R. I. Vane-Wright, Professor G. C. 

 Varley and Mr P. E. S. Whalley. Maureen A. Lane provided invaluable technical 

 assistance. Peter York produced most of the photographs of genitalia and whole 

 moths. The stereoscan photographs, from negatives produced by David Goodger, 



