FAMILY TENEBRIONIDAE 239 



Tribolium castaneum, Herbst. - 

 Reference. — Herbst. K'df. vii, p. 282, t. 112, f. 3, e. (1797)- 



Habitat. — Calcutta. 



Tree Infested. — Bamboo {pendrocalauim strictm). 



Beetle. — This g^reatly resembles both in size and appearance T. ferrugineum, with which 

 species it is considered by many to be identical. 



During the experiments carried out with the bamboo-borer Dinoderus 



)ninutuK at the Indian Museum in Calcutta in 1903 



Life History. I bred out a number of specimens of this Triholimn. 



It and its grubs feed in the walls of the bamboo and 



perhaps on the masses of wood-powder eaten out by the Dinoderus beetles 



and their grubs. The grubs are probably semi-predaceous, as I have also 



found them in company with Caiyobonis gonagra in the seeds of Bauhinia 



racemosa {vide p. 252). 



Tribolium sp. 



Reference. — Determined as an undescribed species of Tribolium at the British Museum. 



Habitat.^Siwahks, North India. 



Tree Infested. — Sal {Shorea robusta). Dholkhand, Siwaliljs, 



Towards the end of January 1902 I obtained specimens of the 



beetles of a minute TriboliiDii from beneath the bark 



Life History. of some dead felled sal-trees. The beetles were between 



the bark and sapwood, and were active. It is possible 



that the insect hibernates as a beetle. 



Mesomorpha. 

 Mesomorpha villiger, Blanch. 



Reference. — Blanch. Voy. Pol. Stid. iv, 154, pi. 10, fig. 15 U853\ 



Habitat. — Siwaliks and Terai sal forests, North 

 India; Katha, Upper Burma. 



Trees Attacked. — Sal (Shorea robusta) : Siwaliks 

 and Terai, North India; Teak (Tcciona grandis) : 

 Mohnyin Reserve, Katha. 



Beetle. — Ovate-elongate. Dull brownish black or rnsty black. 

 Head depressed, front strongly granulose. Prothorax wider than 

 long, sides strongly rounded ; disk convex, 

 Description. strongly granulose. Elytra widest in apical yig. 165. 



fourth, where they are wider than pro- Mesomorpha 



thorax ; constricted from apical fourth, apices conjointly rounded ; villiger Blanch, 



rather strongly striate and granulose. Under-surface strongly North India ; Upper 

 punctate. Legs rather short. Length, 7.5 mm ■ Burma. 



