A new species of Bathanthidium Mavromoustakis (Hymenoptera: Megachilidae: Anthidiini) from China, with a key to the species Author Niu, Ze-Qing Author Wu, Yan-Ru Author Zhu, Chao-Dong text Zootaxa 2012 3218 59 68 journal article 45321 10.5281/zenodo.280216 ff433c45-6e16-438d-8c26-365cfc990b30 1175-5326 280216 Bathanthidium Mavromoustakis, 1953 Dianthidium ( Bathanthidium ) Mavromoustakis, 1953: 837 . Type species: Dianthidium bifoveolatum Alfken, 1937 , by original designation. Diagnosis. 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; 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; T7 of the male ranges from simple to trilobed, with the median lobe longest; front coxa of the male normal, without spine.

TABLE 1. The known species of Bathanthidium .
Species	Female	Male
B . ( Bathanthidium ) atriceps (Morawitz, 1890)	ν
B . ( Bathanthidium ) bifoveolatum (Alfken, 1937)	ν
B . ( Bathanthidium ) emeiense Wu, 2004	ν	unknown
B . ( Bathanthidium ) hainanense sp. nov.	ν	unknown
B . ( Stenanthidiellum ) circinatum Wu, 2004	ν	unknown
B . ( Stenanthidiellum ) malaisei (Popov, 1941)	X	X
B . ( Stenanthidiellum ) sibiricum (Eversmann, 1852)	ν
B . ( Manthidium ) binghami (Friese, 1901)	X	X
Total	8	5

ν represent the sex of the species present in China , X represent the sex of the species absent in China (but known from elsewhere), unknown means the sex of the species is completely unknown.