i88 FAMILY CLERIDAE 



scolytid {Tonicns, Polygraphus) and platypid bark- and wood-borers, and by 

 the wood-wasp 5f>i?.v iviperialis and its parasitic ichneumon Rhyssa persjLasoria. 



The larva is undoubtedly predaceous, and devours the scolytid grubs 

 and also the far larger ones of the Sircx. The grub is very alert and active. 

 I found one on a Sircx grub, it having penetrated down the long excreta- 

 packed tunnel to get to it. I took another from a small elongate pupating- 

 chamber which it had hollowed out of the thick dry bark of the tree, 

 here about one and a half inches in thickness. The bark-dust eaten out 

 was quite fresh, and the chamber had obviously been just completed, the 

 larva being still active. 



I cut out a square of bark containing this pupating-chamber and kept 

 the larva under observation. The grub was discovered on 14 June 1902. It 

 pupated late on the 15th, the pupa being quiescent and motionless. On 

 I July following the pupa had begun to assume the beetle form, this change 

 being completed by the 2nd. From this date to 6 July the colour of the 

 insect gradually darkened, the outer integument hardening until, by the 

 evening of the 6th, the beetle was fully developed. 



Tenerus. 

 Tenerus praeustus, Castn. var. 



Habitat. — Salween River, Tenasserim. 



Tree Attacked. — Teak {Tectona grandis). Wutgyi, Salween River. 



Beetle. — Elongate, narrow. Head and antennae black, upper joints of latter yellow ; 



prothorax shining canary-yellow or orange-yellow ; elytra dull chrome-yellow, the apices 



black ; dorsal surface covered with pubescence ; pygidium bright 



Description. yellow, as also the under-surface ; legs yellow, tibiae and tarsi black. 



Prothorax finely punctate, sides rounded, covered with elongate spiny 



hairs. Elytra slightly constricted apically, finely rugose-punctate, covered with a short 



pubescence ; apices separately rounded. Length, 9 to 14 mm. 



I took a specimen of this small beetle beneath the bark of a freshly 



felled green teak-tree, in a tounggya clearing at Wutgyi,. 



Life History. on the Salween River, in the first week of March 1905. 



The beetle was mature, the pupal stage having been 



passed in the tree. I have no further information on its habits. 



Taksostenus. 

 Tarsostenus univittatus, Rossi. 



Heference. — Rossi. Fii. El. Maul, i, p. 44. 



Habitat. -North India. 



Habits. — I took a specimen of this insect in my office at Dehra Dun. It 

 fell from the thatched roof, which consisted of sal beams and a bamboo 

 superstructure, the former badly infested with the Sinoxylon wood-borers 

 S. crassuin and S. analc, and the latter by the bamboo-borer Dinoderus 

 pilifrons. It is possible that this beetle was predaceous upon the latter 

 insect (see p. 132). 



