Abstract
Abstract The spatial characteristics of larval galleries and mining behaviour of the coffee stem‐borer, Acalolepta cervinus (Hope), were studied on their host plant, Coffea arabica L. Results showed that entry holes were centrally located on stems of 4 cm diameter. Older larvae than third instar preferred tunnelling upward on the stems when diameter at the entry hole is larger than 4 cm, but downward on less than 4 cm. The vertical distribution of entry holes skewed toward lower position of stems. The larvae preferred drilling holes beside protrusions, especially beside the bases of adjacent branches. More entry holes were located on the south‐facing side of stems. Larvae boring hole on stem exhibited a strong location preference. This study helps us to understand larval tunnelling behaviour and to develop the control methods against the target pest.
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