Part III.] Beeson: Beehole Borer of Tealz. 17 
From one of tlie trees in tins plot 62 moths emerged in April-May, 
1914. 
The forests occupy part of a limestone and laterite plateau of low 
hills and broad valleys, 1,500—2,800 feet elevation, with a rainfall of 
about 55 inches ; they have been heavily worked and ya-cultivated and 
contain little mature teak except in the inaccessible ridges, but there 
has been profuse natural regeneration with the production of well- 
stocked, nearly evenaged pole woods and thickets. 
It is not improbable that the latter is one reason for the relatively 
high abundance of the borer in the Pyaungshu and Hsipaw teak 
forests. The progressive reduction of the mature trees would concen¬ 
trate the borer attack on the ungirdled trees, while the simultaneous 
provision of young teak growth would maintain and increase the borer 
incidence. 
12. Southern Shan States. 
No information available, except for forests near the Pyaungshu, 
e.g., N. Lawksawk, where conditions are similar (W. A. Bobertson). 
13. Pyinmana. 
In the Yonbin and Pal we Reserves to the west of the river Sittang 
the beehole borer is not at all common. The percentage of logs showing 
one beehole at the ends or the sides is estimated at less than 5 per cent. 
In the country to the east of the Sittang drained by the Pane and Mazi 
streams the percentage is very much higher; the borer is generally 
distributed, but pockets of teak may occur at any elevation between 400 
and 2,200 feet in which the incidence is extremely high. It is noted that 
the attack of the borer in old trees now standing in paddy fields, 
remnants of forest that existed previous to the extension of cultivation, 
is much more numerous than in paddy-field teak of recent origin. 
[B. B. T. C., Dec., 1913]. 
In the Mayoban drainage of the Yezin Reserve north-west of Pyin¬ 
mana bored timber is plentiful [C. F., S. C., Dec., 1913]. 
The various working-plans agree that the damage due to insects is 
inconsiderable and requires no special protective measure. For details 
of the occurrence of the borer in sample plots in Yanaungmyin and 
Kaing Reserves, see pp. 76—88. 
14. Minhu. 
The Taungdwingyi Forests (Pegu Yoma—Magwe District) do not 
contain beeholed teak in appreciable quantities: the teak is isolated in 
comparatively small blocks. In the Mon and Salin drainages (Irrawaddy 
[ 245 ] 
D 
