INDIAN FOREST RECORDS 
Vol. VIII ] 
1921 
[Part III 
THE BEEHOLE BORER OF TEAK. 
A Preliminary Note on the Ecology and Economic Status 
of Duomitus ceramicus, Wlk. in Burma. 
(Lepidoptera; Cossidae). 
BY 
C. F. C. BEESON, M.A., I.F.S., F.E.S., 
Forest Zoologist at the Forest Research Institute, Rehra Run. 
INTRODUCTION 
rpHE investigations carried out by tbe Forest Zoologist on the ecology 
of the beehole borer of teak, Duomitus ceramicus , Wlk., have been 
limited to three tours carried out in Burma between the following 
dates : 25th March—20th May 1914, 7th May—24th June 1918 and 
15th April—13th June 1919, together totalling 137 working days. As 
the insect is a pest of living trees the investigation of its life-history 
has necessarily been confined to the forests of its natural habitat, and 
no experimental work has been possible in the laboratory or insectary at 
Dehra Dun. The first tour yielded evidence on the life-cycle and 
general bionomics, and, with this as a basis, the later visits were devoted 
to sampling the ecological conditions as widely as possible in the 
restricted time available, in order to discover the range and variety of 
problems awaiting intensive research, and to obtain a rough idea of the 
incidence of the chief factors. The present note is of the nature of a 
preliminary report, and does not claim to give a complete account of 
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