STROMATIUM BARBATUM. 183 
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Life History. 
I have already described what is known of the life history 
of this insect in Znjurtous Insects. It is known as the Kuls; 
Teak borer, and has proved destructive to young teak saplings 
at the Kulsi Teak Plantation, Assam. It was also reported as 
attacking dry khair (Acacia catechu) wood in the Forest School 
Museum, Dehra Dun. In this latter case the eggs were probably 
_laid in the bark of green wood, and the young larvee then bored 
into the tree and remained boring inthe wood after it had been 
sent to the Museum, as it is-known that they spend more than 
one year in this stage of their life history. 
The beetle is now reported as having issued from dry 
bamboos in the Raipur Division, Central Provinces. In this 
case also it is probable that the eggs were laid in the green 
bamboos soon after they were cut. 
Relations to the Forest. 
This pest is known as a dangerous one in Teak plantations 
in parts of India. The fact that it also attacks bamboos would 
tend to show that it has several food plants, and it becomes ime 
portant to fully work out its life history. 
| Potnts in the life history requiring further observation. 
1. Length of time spent by the larva in this stage. As 
larvae of various sizes (and ages) are to be found 
at all times of the year in infested stems, it is 
certain that the grub lives for more than one year 
in this stage. 
2, The different kinds of trees infested by the insect and 
the age at which the tree is attacked. 
