452 



CHEYSOMELID^E. 



Hub. " India or." ; also Java and other Malayan islands. 



In this species the puncturation of the elytra is very fine and 

 not very closely arranged, but it is somewhat doubtful whether 

 the description above would apply to the specimen on which 

 Fabricius founded his tvpe more accurately than to one or other 

 of the closely allied species belonging to this puzzling group. 



789. Colasposoma asperatum *, Le/cv. Cat. Eumolp. 1885, p. 104, 

 note 2. 



" Metallic green, aeneous or bluish-black ; labrum and antennae 



fulvous, terminal joints of 

 latter often dark ; legs some- 

 times fulvous. 



" <$ . Head and thorax 

 densely punctured, the latter 

 transversely depressed behind 

 the anterior margin, sides 

 rounded and margined ; tarsi 

 fuscous. Elytra transversely 

 depressed below the shoulders, 

 densely punctured, sides finely 

 substrigose ; anterior tibia) di- 

 lated at apex. 



" 9 . Elytra more strongly 

 depressed below shoulders, 

 sides strongly strigose, a row of 

 tubercles placed near the mar- 

 gins extending from shoulders 

 nearly to apex." (Leftvre.) 



Length 4f-6 mm. 

 Hub. Bengal : Burma ; extending to China. 

 The above description as given by Lefevre is scarcely detailed 

 enough for certain recognition of the male, while the female is 

 better distinguished on account of the rows or row of tubercles 

 at the sides of the elytra. In the male of the Indian specimens 

 which I refer to this species the thorax is proportionately wide, 



Fig. 156. Colasposoma asperatum. 



* COLASPOSOMA PROSTEBNALE, Jac. Ann. Soc. Ent. Belg. xl, 1896, p. 303. 



It is somewhat doubtful whether this species is specifically distinct from 

 C. asperaturn as far as the male is concerned, as I have not seen the type of the 

 latter and the description is too vague to be certain. The female, however (if 

 this is rightly referred to the same species, C. prosfernalc), certainly differs from 

 that of C. asperatum in having the sides of the elytra simply rugose not tuber- 

 culate. In all other respects the two species are identical. In C. prosternale 

 the male organ seems also to differ from that of the allied species, instead 

 of its being strongly curved it is more slender and straight, the apex is widely 

 opened and contains a kind of hardened tubercle : this is the same in the two 

 specimens dissected. 



The species has been obtained at Tharawaddy in Burma, and Mandar in 

 Bengal, also in the Andaman Islands ( 2 $ ). 



