1991 Volume 26 Issue 4 Pages 463-468
An analysis of field sampling data of the bamboo aphid, Pseudoregma bambucicola, having sterile soldiers on Bambusa multiplex stems, shows that the soldier ratio is higher in large colonies than in small ones, and in colonies with alate adults than in those without them. The soldier ratio is also higher on thick shoots than it is on thin and small shoots from branches of old stems.