Dr. Coleman. 
Mr. Kunhi 
Kannan. 
Mr. Fletcher. 
Dr. Coleman. 
Mr. Kunhi 
Kannan. 
Mr. Fletcher. 
Mr. Kunhi 
Kannan. 
30 PROCEEDINGS OF THE SECOND ENTOMOLOGICAL MEETING 
that we may have in Southern India some long-lived species comparable 
to the well known “17-year Cicada” of North America, but exact 
records of the emergence of large swarms are required. 
We will go on to the Boring Pests of Coffee. These include 
Xylotrechus quadripes 
Zeuzera coffee 
Collyrine beetles. 
Of these Xylotrechus quadripes, the “‘ White Borer ”’ of the Coffee 
Planters, is by far the worst pest and did a tremendous amount of damage 
two years ago in South Coorg. On one group of estates, of about 500 
acres, approximately 100,000 coffee-bushes had to be taken out and 
destroyed, and of course replaced by young plants, and all this des- 
truction occurred in one season. That will give you some idea of the 
damage done. I visited Coorg in connection with this at the end of 
1915 and did some work on the lifehistory of the beetle and control- 
measures but, before discussing these, I will ask the Mysore delegate 
to give us their experiences. 
T will ask Mr. Kunhi Kannan to give an account. 
X ylotrechus quadripes is a very bad pest of coffee in all areas n Mysore 
where coffee is grown. An alternative food-plant has been found by 
Dr. Coleman, but I forget its name. [Name has since been given as 
Olea dioica Roxb.]| 
Was it Wendlandia? There is a Wendlandia (notoniana) common 
around Mereara which I thought, when I was there, was a probable 
food-plant of Xylotrechus, although I did not actually find any larve in 
it. 
I cannot remember the name. 
The eggs are laid in the bark in cracks and crevices. 
Here is an unpublished coloured plate, which was done here from my 
material brought back from Coorg. It shows the egg and all stages and 
method of attack, and may help to illustrate your account. 
The egg takes six to nine days to hatch in Mysore. The grub bores 
into the tree and penetration takes a circuitous route to reach the wood. 
The larva lives for nearly a year. Young trees, of four to five or six 
years, are damaged most and these trees cannot survive the attack. 
As regards remedial measures, scrubbing the bushes is the only satis- 
factory thing to do, and this should be done once in the middle of Novem- 
ber and again at the end ofthe month. Coconut brushes have been found 
to be the best to use for scrubbing. These brushes are made from husks 
of coconuts cut in two transversely ; the cut ends are then beaten out 
and made into a sort of brush. The idea in scrubbing is to kill all the 
