FAMILY TENEBRIONIDAE 239 



Tribolium castaneum, Herbst. 

 REFERENCE. Herbst. K'df. vii, p. 282, t. 112, f. 3, E. (1797). 



Habitat. Calcutta. 



Tree Infested. Bamboo (Dendrocalamus str ictus). 



Beetle. This greatly 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 



minutus at the Indian Museum in Calcutta in 1903 



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



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 Caryoborus gonagra in the seeds of Bauhinia 

 racemosa (vide p. 252). 



Tribolium sp. 



REFERENCE. Determined as an undescribed species of Tribolium af the British Museum. 



Habitat. Siwaliks, North India. 



Tree Infested. -Sal (Shorea robusta). Dholkhand, Siwaliks. 



Towards the end of January 1902 I obtained specimens of the 



beetles of a minute Tribolium 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. I'oy. /'<>/. Sud. iv, 15.1, pi. 10, fig. 15 i 



Habitat. Siwaliks and Terai sal forests, North 

 India; Katha, Upper Burma. 



Trees Attacked. Sal (Shorea robust n ) : Siwaliks 

 and Terai, North India; Teak (Tcctonn ^nnuHs] : 

 Mohnyin Reserve, Katha. 



Beetle. -Ovate-elongate. Dull br<i\\nisli black or rusty hi. irk. 

 Head depressed, front strongly granulose. I'rothonx \\ider th.m 



long, sides strongly rounded ; disk convex, 

 Description. strongly granulose. Elytra widest in apical j.-|, ; [^ 



fourth, where tliev arc \\idi-r th;m pro- 



Mesomorpha 

 thorax ; constricted from apical fourth, apices conjointly rounded : 7'////"vv I'.laiu-li. 



rather strongly striate and granulose. Under-surface strongly North India : I ppi 

 punctate. Legs rather short. Length, 7.5 mm llurma. 



