Part Lj Beeson : Life-tiistory of Diapus furtivus, Sampson. 21 
TABLE III. 
Insect ary Emergence Record of Diapus furtivus from Assam. R. R. E. 61—1915. 
S 
9 
S 
9 
$ 
9 
1 
J 
9 
December— 
February— 
February— 
March— 
14th . 
1 
2nd . 
l 
1st 
1 
•• 
18th . 
3 
17th 
1 
3rd 
1 
4th 
1 
•• 
4th 
1 
25th 
1 
19th 
1 
l 
11th . 
2 
16th 
1 
23rd 
1 
l 
14th 
3 
3 
26th . 
1 
•• 
16th ... 
2 
31st 
1 
2 
17th 
•* 
2 
18th . 
2 
19th . 
2 
28th . 
1 
1 
The early stages of the attack of Diapus furtivus were noticed in 
this locality, Guma Range, Goalpara Division, at the end of January 
1916 in a Sal tree felled in the year’s coupe in December 1915. Here 
again the insectary emergences are paralleled by field observations. 
The flight period of later broods, which appear in the hot weather, 
has not been determined for Bengal and Assam, but, that intermediate 
generations occur during the hot weather and early rains, can be 
deduced from the statement of Stebbing (1914, p. 631) to the effect that 
the beetle was very plentiful on the wing and boring into the bark of 
newly felled trees in the latter half of May 1906 in Goalpara Division, 
Assam. Further evidence is available from specimens collected by 
Forest Ranger B. N. C. Banerji in Apalchand Range, Jalpaiguri 
Division in July, 1913, and forwarded to Dehra Dun for observation 
(R. R. D. 10). Emergences occurred regularly from 22nd August 1913 
to 18th September 1913. 
[ 21 J 
