oe aye OY Nef e Ts oe 
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they are in the softer, upper parts, it is possible to dig them out with a 
wire hook similar to the one mentioned as effective against the rhinoceros 
beetle larve. In every case where these or other larve are dug out of 
a burrow, this should at once be filled with a substance distasteful to the 
adult beetles. Great care is necessary in the work of extracting the 
larve, lest it should be carried to such an extent as to debilitate or kill 
the tree. If the weevil larve are located at or near the base of the tree, 
where it is almost impossible to dig them out, the only practical method 
is to stop all avenues of escape and then to remove the tree after it ceases 
to bear fruit. It has been suggested that infested trees be cut down, split 
lengthwise, and then left to attract beetles from the others. [I am 
opposed to such a procedure, because it would surely attract fully as many 
insects from a distance as it would from the immediate neighborhood. 
Such a method would be advisable only if the other trees were in great 
danger from beetles already present in them. Plate II] shows a coconut 
tree very badly infested by both the rhinoceros beetle and the Asiatic 
palm weevil. It will be seen that the entire interior has been eaten out 
and converted into a mass of débris, in which both the cocoons and the 
larve of these insects were found in great abundance. The tree had 
cased to bear, the growing point was gone, and there remained only a 
circle of older leaves, kept alive by the small flow of sap in the outer shell 
of the trunk. It is obvious that such a tree is a source of infection for 
a large area. 
THE SHOT-HOLE COCONUT WEEVIL. 
This destructive weevil has been found in Laguna Province in con- 
siderable numbers. I once felled a dead coconut tree, the trunk of which 
was completely pitted from top to bottom by the insects’ exit holes, and 
Mr. Schultze found the larve and pupe as well as the adults in a living 
tree. (PI. X, figs. 1 to 5.) 
.Hgg—TVhe egg has not been found. It is probably laid directly in 
the hard wood in small cavities made by the female, as the grub can work 
in any part of the trunk of a tree. 
Larva.—The larva is a very pale-yellow, almost white grub, measuring 16.5 
millimeters in length and 6 millimeters in diameter, resembling the larva of the 
palm weevil, except that the hinder end of the body is evenly rounded. The head 
is shiny and but slightly darker than the rest of the body, the region around the 
mouth and the mouth parts appearing dark-brown. A very thin, brown median 
line runs from the upper lip halfway to the back of the head. The spiracles are 
very small and almost black. The surface of the body is smooth and very much 
folded. A few bristle-like hairs are seen on the head. (See Pl. X, fig. 1, illustra- 
ting a full-grown larva.) 
Pupa.—The pupa is 13.5 millimeters long and 6 millimeters in diameter and of 
the same color as the larva. The surface is smooth and shiny. On the head, 
thorax, and dorsum of the abdomen there may be seen a series of stout, brown 
bristles arising from brownish tubercles. The tip of the abdomen has a small, 
white tubercle on each side, from the point of which arises a small, black bristle. 
There is little difference between the size of the tubercle and that of the bristle. 
