Part I.] Beeson : Life-History of Diapus furtivus, Sampson. 
23 
At the end of January 1916, Mr. H. G-. Champion, Assistant Con¬ 
servator of Forests, Kheri Division, Eastern Circle, United Provinces, 
found mature beetles and larvae of this species in a wind-felled Sal, dead 
about 3 months, and sent a wood specimen to Dehra Dun, which 
yielded beetles in the 2nd week of March. 
In the Siwalik Division, Western Circle, the writer observed Diapus 
furtivus swarming early in February 1914, and found eggs and paired 
beetles in the early stages of the sap-wood galleries on the 24th of the 
month. 
A tree was felled on February 1916, in low-level Sal forest of the 
Trans-Sarda tract in Kheri Division, and a log straightway despatched 
to Dehra Dun (R. R. D. 98), which yielded beetles during April as 
detailed below. 
TABLE V. 
Insectary Emergence Record op Diapus furtivus from the United Provinces 
R. R. D. 98 - 1916. 
Date of emergence. 
Number of indivi¬ 
duals. 
Date of emergence. 
Number of indivi¬ 
duals. 
April— 
2nd . 
$ 9 
1 
April— 
10th 
<? 9 
2 3 
5th . 
1 
11th 
1 
6th . 
2 
1 
12th 
2 
7th . 
1 
1 
13th 
1 
9th . 
1 
15th 
3 1 
Seasonal History in the Central Provinces. 
Of the seasonal history in the Central Provinces no information is 
forthcoming. Sal trees have been felled during the cold weather, De¬ 
cember-April, in most of the Sal-bearing forests, and logs have been sent 
at intervals to Dehra Dun, but, with the exception of occasional pairs 
of beetles, no infestation, severe enough to be of use for experimental 
breeding purposes, has been obtained. Stebbing (1914, p. 631) states 
that a maturing generation was taken in the middle of April 1909 in 
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