28 4 



FAMILY CERAMBYCIDAE 



Sub-Family 3. CERAMBYCINI. 



Head variable in form, but seldom distinctly narrowed behind eyes ; 

 mandibles never provided with a ligamentous fringe or molar tooth at base. 

 So far as at present known this is by far the most important sub-family of 

 the three to the forester. 



Eighteen genera comprising twenty-five species are known to be 

 injurious to forest trees in the country. Some of these are pests of first- 

 class importance, such as Hoplocerambyx spinicornis of the sal in the 

 Central Provinces and Assam, Molesthes holosericea of the United Pro- 

 vinces sal areas, Trinophyllum cribratum of the deodar, and sEolesthcs sarta 

 of the soft-wooded but valuable poplars and willows of Baluchistan. 



TETROPIUM. 



This would appear to be a genus of some importance in the North- 

 West Himalaya. 



Tetropium oreinum, Gahan. 



REFERENCE. Gahan, F.B.I. Ceramb. i, no. 88, p. 95 (1906). 



Habitat. Bashahr State. Gahan gives West Kashmir (Lt.-Col. 

 Steatham) ; North-West Himalaya (E. P. Stebbing). 



Tree Attacked. Deodar (Cedrus deodara). Ralli Forest, Bashahr State ; 

 Jaunsar Konain, Pajidhar. 



Beetle. Black or brownish black, the upper side for the most 

 part dull, the under-side and legs somewhat glossy. Head sparsely 



clothed with tawny setae ; densely rugulose- 

 Description. punctate, marked along the vertex and front 



with a median groove. Prothorax sparsely 



setose ; widest a little before the middle, narrowed more towards the 

 base than in front, marked with a transverse groove a little in front 

 of the basal margin, the latter not raised ; surface finely and very 

 densely granulated, except on two or three small areas in front which 

 are punctate and slightly nitid, and on a small smooth median 

 callosity near the base ; disk with a slight depression along the 

 middle. Elytra densely punctate and somewhat glossy near the 

 base, the rest of their surface covered with a very short dark 

 pubescence, more or less opaque. Body beneath very sparsely clothed with tawny pubescence. 

 I-Vmora fusiform, laterally compressed. Length, 9 mm. to 14 mm. ; breadth, 23 mm. to 3! mm. 

 A specimen of a mature beetle was taken by myself from the sapwood 

 of green felled deodar-trees in the Ralli Forest of the 

 Life History. Kailas Range in the Bashahr State on 24 June 1901. 



The following year I took the same insect in green 



deodar at Pajidhar in Tehri Garhwal. The beetle appears on the wing 

 from the middle of June into July. It lays its eggs in crevices of the 

 bark of newly felled green deodar-trees or in standing sickly ones. 

 The young larvae, on hatching out, feed at first in the fresh sappy bast 

 layer, afterwards grooving the sapwood. The gallery is long, rather 

 broad, shallow, and is carried in a wavy manner in the long axis of the 



FiG. 195. 

 Tetropium oreinum, 



( iahan. x 3_ 

 N.W. 



