2.0 Indian Museum Notes. [ Vol. YI» 



The habits of Dinodcrus and Rhizopertha would appear to be 

 much the same. They live in and feed udoii dead wood. Bamboos 

 are severely attacked by several species of the former genus. 



Genus Dinoderus, Stephens. 



Stephens, 1830, IH. Brit. Ent., Ill, p. 352. 

 Waterhouse, i883, Ann. Nat. Hist., 188S, I, p. 348. 

 Zoufal, 1894, Wien. Ent. Zeit, XIII, p. 35. 



Until 1888 the species of the Genus Stephanopachysvrerz named 

 Dinoderus. Mr. C. O. Waterhouse pointed out this mistake and 

 formed the genus Stepkanopachys. 



1, Dinoderus distinctus, Lesne. 

 Lesne, Ann. Soc. Ent. Fr. Vol. LXVI,p. 325 (1897.) 



Longisb, brown with a slight reddish tint at the base of the 

 elytra. Front of head and funiculus without long erect hairs. 10- 

 jointed antennae ; second joint of club less than one and a half times 

 as wide as long. Prothorax is rather shorter than in other Dinoderus t 

 evenly rounded in front, widened near the base, its sides not parallel; 

 the lateral suture joined in front with the marginal teeth of 

 the rasp-like anterior surface, these teeth being small, almost contigu* 

 ous, rounded, the two middle ones the largest. The posterior 

 portion of the pronotum densely punctuate, especially in the middle, 

 no trace of median foveoles being present. Scutellum flat, dull, rec- 

 tangular, less than twice as wide as long. Elytra parallel, slightly 

 widened behind, more than twice as long as the prothorax , elytral 

 punctures deep, not distinctly ocellated, the punctures not coalescing in 

 the dorsal region, less deep and coalescing on the posterior declivity. 

 Suture not gaping in the declivity. The erect hairs on the elytra 

 very short. Long 3! millim. 



Distribution. — The Dehra Dun plateau, United Provinces. Eleva- 

 tion 2,000 feet (mihi). This is the first record of the insect existing 

 in India. 



Specimens present in— Coll. Ind. Mus. ; Coll. For. Ent. t Govt, 

 of Ind. ; Coll. mihi. 



LiJe'History. — The beetle appears on the wing about the first 

 week in May and oviposits in the smaller branches and twigs of the 

 Mango {Mangi/era indica) tree. It attacks only dying and dead 

 wood. The beetles discovered were in pairs working together and 

 they appeared to have entered the tree by the same entrance hole. 

 This entrance tunnel is bored vertically down to the centre of the 



