Xylocopa (Zonohirsuta) dejeanii penangensis Cockerell, 1918a

Ascher, John S., Soh, Zestin W. W., Chui, Shao Xiong, Soh, Eunice J. Y., Ho, Benjamin M., Lee, John X. Q., Gajanur, Anya R. & Ong, Xin Rui, 2022, The bees of Singapore (Hymenoptera: Apoidea: Anthophila): First comprehensive country checklist and conservation assessment for a Southeast Asian bee fauna, Raffles Bulletin of Zoology 70, pp. 39-64 : 47

13. Xylocopa (Zonohirsuta) dejeanii penangensis Cockerell, 1918a , Penang Collared Carpenter [subspecies of Collared Carpenter]

This large-bodied, distinctively patterned, territorial (in males) and thus conspicuous bee is notably absent from our recent field surveys in Singapore, but with records from Dover (1929) and from a 1962 specimen from MacRitchie collected by Murphy. An online video posted to the Bird Ecology Study Group by Leong Tzi Ming from 2014, attributed to Singapore but without precise locality, provides evidence for its persistence in Singapore. However, none of the authors of this study have detected it and it is at best very localised. We have observed it sporadically at PBS.