45 
Part III.] Beeson : Beehole Borer of Teak. 
The observations recorded above demonstrate the commencement 
of a generation early in the rains, but there are numerous examples of 
larvae of large size occurring at the same time as early instar larvae, 
which represent either very rapid are very delayed development. Much 
more work has to be done on the life-cycle, but as far as present observa¬ 
tions go, one must conclude that some larvae take two seasons for their 
development. 
3. The Pupal Stage. 
The following table shows the dates and localities on which pupae 
and fresh pupal skins have been observed. 
Table 2. —Stage da tes of pupae of Duomitus ceramicus, Bur ma. 
Date. 
Number 
of indivi¬ 
duals. 
Pupae or Pupal 
skins. 
I 
Locality. 
Observer. 
20th March 1914 . 
3 
Pupal skins 
Pyonchaung Re¬ 
serve North 
Toungoo Divi¬ 
sion. 
Forest Zoologist.' 
25th March 1917 . 
2 
Pupae 
Kyungin, South 
Toungoo divi¬ 
sion. 
W. C. Roolce. J 
4th, 6th April 1914 
3 
Do. 
Mohnyin Reserve, 
Katha Division. 
Forest Zoologist. 
7th, 8th April 1914 
3 
Do. 
Mandalay divi¬ 
sion. 
B. P. Kelly. 
13th April 1914 . 
•• 
Do. 
Namkha, North 
Shan States. 
Forest Zoologist. 
14th April 1914 . 
5 
Do. 
Okkyi Shwegu 
Sub-division. 
A. R. Villar. 
18th, 19th April 
1914. 
2 
Do. 
Petsut Reserve, 
Katha division. 
Forest Zoologist. 
20th April 1914 . 
1 
Pupa 
Okkyi Reserve, 
Shwegu Sub¬ 
division. 
G. F. Mathew. 
1st, 30th April 
1914. 
21 
Pupal skins 
Petsut Reserve, 
Katha division. 
Forest Zoologist. 
1st, 30th April 
1914. 
Many pupae 
Bilumyo Reserve, 
Katha division. 
Ditto. 
1st, 30th April 
1914. 
Several pupae . 
Mohnyin Reserve, 
Katha division. 
Ditto. 
April 1914 . 
1 
Pupa 
Northern Shan 
States. 
J. H. Benson. 
10th May 1914 . 
1 
Do. 
Hsipaw, Northern 
Shan States. 
Forest Zoologist. 
1st, 24th May 1914 
* # 
Many pupae 
Hsipaw, Seen, 
Northern Shan 
States. 
Ditto. 
May 1914 . 
10 
Pupal Skins 
Hsipaw, Northern 
Shan States. 
Ditto. 
April-May 1914 . 
34 
Do. 
Ditto 
Ditto. 
Uth May 1910 . 
1 17 
Do. 
Yanaungmyin, 
Pyinmana Division. 
R. Unwin. 
May 1918 . 
Do. 
Pyonchaung Re¬ 
serve, North 
Toungoo divi¬ 
sion. 
Forest Zoologist. 
rt t 
14th, 25th May 
1919. 
11 
1 
Do. . 
Bilumyo reserve, 
Katha division. 
Ditto. 
[ 273 ] 
