Bathanthidium Mavromoustakis, 1953

Tran, Ngat Thi, Truong, Lam Xuan, Ljubomirov, Toshko & Nguyen, Lien Thi Phuong, 2021, First record of the bee genus Bathanthidium (Bathanthidium s. str.) Mavromoustakis (Hymenoptera: Megachilidae) from Vietnam: Description of a new species and a key to species, Journal of Hymenoptera Research 88, pp. 51-60 : 51

Genus Bathanthidium Mavromoustakis, 1953

Bathanthidium Bathanthidium Subgenus Bathanthidium Bathanthidium s. str.: Dianthidium (Bathanthidium) Mavromoustakis, 1953: 837. Type species: Dianthidium bifoveolatum Alfken, 1937, by original designation.

Diagnosis.

According to Michener (2007) and Niu et al. (2012), the diagnosis of the genus Bathanthidium is as follows: Small to moderate-sized species. Body all black or black with yellow markings, with the yellow bands broken on anterior terga; epistomal suture generally straight; medially divided, smooth-floored mesoscuto-mesoscutoscutellar sulcus; preoccipital ridge not carinate; omaular carina absent; pronotal lobe with carina weak or absent; scutellum rounded or medially emarginated, in profile rounded or at least not sharp and not overhanging metanotum; propodeum with a fovea behind spiracle; 2nd m-cu slightly exceeding the apical margin of 2nd submarginal cell; arolia present and large; median S4 of both sexes with pectinate hairs; S5 of the male with pectinate hairs; T6 of the male simple; T7 of the male ranges from simple to trilobed, with the median lobe longest; front coxa of the male normal, without spine.