9 6 



H. STEMPFFER 



posterior edge divided to form two hooks ; in the normal position the tegumen is folded over 

 and the two lobes of the uncus face one another, the straight edges of the groove being dorsal ; 

 vinculum wide dorsally, narrow below ; no lower fultura ; valves much reduced compared 

 with the dorsal structures, finger-shaped with a small, sharp tooth on the inferior edge near the 

 apex ; penis subcylindrical, elongate, very slender ; uncus with a felt-like covering of fine hairs, 

 distal portion of the valves pilose. 



The male genitalia of M. zymna and M. metaleucns are very similar to those of 

 simplex. 



Bethune Baker (1914, Trans, ent. Soc. Lond. 1914 : 317, pi. 58, figs 9 and 9a) 

 figured the genitalia of " Megalopalpus gigas ", the name occurring only in the 

 explanation of the plate. The genitalia figured correspond exactly with those of 

 M. simplex. 



The early stages of M. zymna have been described by W. A. Lamborn (1914, 

 Trans, ent. Soc. Lond. 1913 : 458). The caterpillar is protected from attack by ants 

 by a coriaceous skin bearing tubercles tipped with coarse hairs ; it is carnivorous 

 and feeds on Jassidae and Membracidae (Hemiptera). Its mode of life is the same 

 as that of the caterpillar of Gerydus chinensis Felder and demonstrates the close 

 relationship of Megalopalpus to the Indo-Malayan genera Gerydus, Allotinus etc. 



The shape of the palpi, the venation and the genitalia indicate that Megalopalpus 

 should be included in the sub-family Miletinae (= Gerydinae), as Aurivillius and 

 Bethune Baker have already pointed out. 



Fig. 90. Megalopalpus simplex Rober, o* genitalia. 



