Megachile (Callomegachile) ornata Smith, 1853

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

20. Megachile (Callomegachile) ornata Smith, 1853 , Ornate Resin Bee

This species was only recorded in 2014 during a mass blooming period, when many large-bodied Megachile were observed by ZWWS and colleagues to visit tiger orchids ( Ascher et al., 2016b, 2019). Females of these species were collected once at Zhenghua Park and observed visually at Bukit Timah Nature Reserve visitor centre in 2014 at tiger orchids ( Gramamtophyllum speciosum ) planted on the ground.