Additional Notes on the Nesting Habits of the Taiwanese Bamboo Carpenter Bee, Xylocopa (Biluna) tranquebarorum tranquebarorum (Hymenoptera, Anthophoridae)

A nest aggregation of the bamboo carpenter bee Xylocopa (Biluna) tranquebarorum tranquebarorum was found in Shihmen, Pingtung, Taiwan. The aggregation consisted of 8 nests in successive internodes of a dead bamboo culm. Successional reuse of natal nests frequently occurred, up to 6 times, in these nests. Nesting habits coincided essentially with those described by IWATA (1938) and MAETA et al. (1985). One of nests involving two resident females was found at the post-laying period, but its social type could not be determined. The number of generations per year in southern Taiwan is also discussed.