I'AMILV rURCULIOXIDAE 



449 



Sll'ALUS. 



Sipalus hypocrita, Boh. 



Hkfekenck.— Boh. Schoiih. Cot. Cure, viii, 209. 



Habitat. — Salween River, Tenasserim. 



Tree Attacked.— /J<///>t-r<,'n? s^.{cnltrata?). Kowloon Island, Salween River. 



Beetle.— A large weevil with a thick heavy lx)dy. Hiown or 

 greyish brown, mottled, with three longitudinal rows of black spots 



on elytra alternating with yellowish ones. 

 Description. Head small, with a very long rostrum, 



curved downwards and inwards ; the an- 

 tennae inserted on the basal half, the scape fitting into a deep 

 scrobe on under-surface of rostrum. Prothorax widest medianly, of 

 considerable size, disk flat and very roughly corrugated, as also 

 sides, which are rounded. Elytra wider than prothorax, disk rather 

 flat, apical portion depressed, sides straight to apical third, thence 

 constricted to apices ; striate-punctate, the punctures very large 

 and shallow. Under-surface punctate and imbricate, the abdomen 

 black, smooth, with a short whitish or yellowish pubescence. 

 Length, 19 mm. to 25 mm. 



From a pupal chamber in the sapwood of a large 

 Life History. standing Dalbcrgia tree, possibl;,' 



295. 



Si/ia/i/.t hypocrita, Boh. 

 Tenasserim. 



citltrata, I took a living specimen 

 of this weevil. The beetle was fully mature and readv to 

 issue. Traces of a large larval gallery were visible on the outer sapwood of the 

 tree. The insect was taken on 9 March 1905. Other insects which had infested 

 this tree were the elater beetle (Alam, p. 226), and a wood-boring Xylocopa. 



Undetermined Weevil. 



References.— /«if. Mus. Notes, ii, 151 ; Indian Foresier, vol. xxxi, 76 (1905). 



Habitat. — Western Duars : Nilumbur, South iMalabar, Madras. 

 Tree Attacked. — Mahogany {Sivietenia mahogani). Western Duars; 

 Nilumbur. 



Beetle. — Unknown. 



Larva.— A fat, white, curved, legless grub, thickest in middle ; head horny dorsallv, orange- 

 brown, wuth scattered yellow hairs on it : mouth-parts black, liody tuberculate, the tubercles 

 bearing a few white hairs on them. 



The grub lives in the juicy bark and sapwood of the mahogany. The 



eggs are laid on the bark or in small incisions made in 



Life History. it with the proboscis. The grub on hatching at first 



feeds in the bast layer only, subsequently going further 



in, and grooving out an irregular-shaped gallery in the bast and sapwood. 



The irritation set up by the boring action of the grub causes the tree to 



9003 p jr 



