Part III.] Beeson: Beehole Borer of Teak. 
71 
the presence of larvae J" to 2" long. In December 1916 beelioles were 
observed everywhere “ even in the healthy trees.” 
The writer visited this reserve in April, 1914, and carried out a few 
enumerations in Plantations No. 2 of 1897 and Nos. 11 and 12 of 1900 
to determine the abundance of the borer from the evidence of emergence 
holes and partly healed beeholes in the standing tree. The following 
statement gives the results obtained, in plots of roughly one acre each :— 
Table 15.— Incidence in Plantations , Petsut Reserve , Katha , 1914. 
Percentage of sample trees. 
Appearance of the Beehole. 
•Plantation 
2 of 1897. 
Plantation 
11 of 1900. 
Plantation 
12 of 1900. 
1. Fresh emergence holes 
6 
1 
3 
2. Old non-oceluded holes or 
overgrown holes with 
evident scars. 
22 
5 
10 
3. Trees without external signs 
of attack. 
72 
94 
87 
The trees were examined up to the crown branches by climbing or 
with field-glasses, but there is a strong probability that many holes 
were missed and that the incidence of attack is higher than appears from 
the figures. 
2. Sample plot in Sbwegu Subdivision, Bhamo. 
1. Beehole borer Observation area, Okkyi, Lower Kyaukkwe. 
1. Description of the Sample Plot. 
Mr. A. B. Villar, who was placed on special duty in April, 1916, in 
connection with the beehole borer investigations, selected a plot on the 
right bank of the Kyaukkwe stream, near Okkyi, Shwegu subdivision, 
and enumerated the attacked trees, surveyed the area and maintained 
observations until the end of May. The data in his report are given 
below together with information on the botany and past history of the 
area furnished by Mr. A. J. Butterwick. 
Situation. —The plot (area about 2 acres) is part of a patch of almost 
pure natural teak situated on the flat top of an isolated knoll surrounded 
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