Nomia (Acunomia) lusoria Cockerell, 1919c

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 : 48

16. Nomia (Acunomia) lusoria Cockerell, 1919c , Mangrove Nomia

This species was described from Palawan in the Philippines and only recently detected in Singapore, where it is clearly restricted to mangroves and their immediate vicinity, e.g., at Pasir Ris Park and Sungei Buloh Wetland Reserve. Its preferred habitat is relatively difficult to access and to sample by net, so the species may be more numerous than realised. Divergence in COI sequence between samples initially identified as N. lusoria with reference to Pauly’s (2009) revision led to re-examination of sterna of available males, which revealed subtle differences in a unique divergent male sample and provided basis to delimit the morphospecies N. aff. lusoria (see Appendix). Further research is needed to discover diagnostic characters for females and to confirm which local records pertain to which cryptic form, but in any event available evidence suggests that the species complex in the broad sense is of conservation concern in Singapore.