367 
CARYOBORUS sp. 
Plate XXII, figs. 2, 2a. 
Reference :—Provisionally determined as Caryoborus sp. 
Classification :—Order, COLEOPTERA. Family, Bruchide. 
Tree attacked :—AJlbisata Lebbek (Sirzs). 
Beetle.—Resembles the last in shape but is greyish in colour ; 
the elytra leave the last two segments of the body disclosed. 
The antennz are short, the thorax small and triangular and the 
elytra greyish with longitudinal darker markings. The insect is 
of stout, thick build. Plate XXII, fig. 2, shows a dorsal and side 
view of the beetle. 
Life-History. 
The larva of this beetle feeds upon and destroys the seeds 
of Albizzia Lebbek. These seeds are large, flat and squarish, and 
are contained in a pod of g-12 inches in length, The grub 
completely hollows out the interior of the seed, leaving only the 
outer skin intact. When full-fed it pupates within the seed. 
Mr. G. M. Ryan, who forwarded specimens of this insect and the 
attacked pods, states that the damage done is very considerable. 
Fig. 2 a shows a seed with a mature beetle half-emerged from 
it. 
The beetle issues from the pods, which persist on the tree for 
a long time, in the hot weather about March-April in the Bombay 
Presidency and evidently lays its eggs on or in the flowers or 
young-forming pods in April and perhaps on through May. Only 
one grub is found within each seed. The pods mature about 
October and the insect perhaps passes the cold weather season 
as a pupa within the hollowed-out seed. 
The Siris tree is very common all over India and Burma, and 
it is therefore necessary to ascertain whether this insect attacks 
the seed in this way all over the country. 

