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 Key to the species of Bathanthidium (Males of B. ( B. ) hainanense , sp. nov. , B. ( B. ) emeiense , and B. ( S. ) circinatum unknown.) 1. Fovea behind propodeal spiracle rounded, delimited by a strong carina ( Fig.7 , 25 , 33, 41 ); T7 of male trilobed, with median lobe longest; basal zone of propodeum not distinct, without row of pits except laterally ( Fig.8 ); T6 of male simple (oriental)................................................................................. 3 B. ( Bathanthidium s.str. ) -. Fovea behind propodeal spiracle elongate, weakly delimited ( Fig.18 , 48, 54 ); T7 of male simple or with slightly produced median lobe; basal zone of propodeum and pits variable; T6 of male with elevated median section or surface convex...... 2 2. Basal zone of propodeum distinct laterally, with regular, shiny, nearly horizontal pits ( Fig.18 , 47 ); T6 of male with surface convex (eastern palearctic)............................................................... 8 B. ( Stenanthidiellum ) -. Basal zone of propodeum not distinct, with irregular, sculptured, sloping pits laterally; T6 of male with elevated median section and concave lateral sections (oriental) ( INDIA : Assam; BURMA : Tenasserim; MALAYSIA )...................................................................................................... B. ( Manthidium ) binghami 3. Flagellum 11-segmented, male........................................................................... 4 -. Flagellum 10-segmented, female......................................................................... 5 4. Clypeus, mesoscutum without yellow marks; paraocular area with dull red marks; T2-T5 with broken yellow bands; T6 black ( CHINA : Fujian, Gansu)..................................................................... B. ( B. ) atriceps -. Clypeus ( Fig.38 ), mesoscutum ( Fig.40 ) with yellow marks; paraocular area with roughly triangular yellow marks ( Fig.38 ); T1- T2 with lateral marks ( Fig.36 ); T3-T5 with entire yellow bands ( Fig.37 ); T6 brown ( CHINA : Zhejiang, Anhui, Fujian, Hubei, Hunan, Guangxi, Yunnan, Taiwan )......................................................... B. ( B. ) bifoveolatum 5. Clypeus black, without lateral yellow marks ( Fig.2 , 23 ); paraocular area with little yellow mark ( Fig.2 , 23 ).............. 6 -. Clypeus with lateral yellow marks ( Fig.31 ); paraocular area with large striate-like yellow margin, reaching to apex of eye ( Fig.31 ) ( CHINA : Zhejiang, Anhui, Fujian, Hubei, Hunan, Guangxi, Yunnan, Taiwan )................ B. ( B. ) bifoveolatum 6. Scutellum with two broad yellow marks apically ( Fig.27 ); T1-T3 with lateral yellow marks ( Fig.21 ); T4-T5 with broken yel- low bands (sometimes bands not broken) ( Fig.21 ) ( CHINA : Sichuan)................................ B. ( B. ) emeiense -. Scutellum without yellow mark apically ( Fig.4 ); T1 without lateral yellow marks ( Fig.12 ); T2-T5 yellow bands variable... 7 7. Mandible 3 teeth; third flagellum slightly longer than second one; T2-T5 with lateral oval yellow marks, not entire yellow bands ( CHINA : Fujian, Gansu)................................................................ B. ( B. ) atriceps -. Mandible 4 teeth; third flagellum as long as second one ( Fig. 2 ); T2 with pair of small, median, stripe-like yellow marks ( Fig.12 ), T3-T5 with broader entire yellow bands ( Fig.12 ) ( CHINA : Hainan)................. B. ( B. ) hainanense , sp. nov. 8. Flagellum 11-segmented, male........................................................................... 9 -. Flagellum 10-segmented, female........................................................................ 10 9. T7 without teeth; gonostylus only with a small notch at the proximal end ( CHINA : Beijing, Heilongjiang, Jilin, Neimenggu, Hebei, Zhejiang, Sichuan; RUSSIA : eastern Siberia)............................................. B. ( S. ) sibiricum -. T7 with teeth; gonostylus with a deep notch at the proximal end ( SOUTH KOREA )..................... B. ( S. ) malaisei 10. Clypeus yellow, middle with circle black mark ( Fig.15 ).......................................... B. ( S. ) circinatum -. Clypeus black, middle without circle black mark ( Fig.44 ).................................................... 11 11. Metasoma terga shiny; mandible 2 teeth ( CHINA : Beijing, Heilongjiang, Jilin, Neimenggu, Hebei, Zhejiang, Sichuan; RUS- SIA: eastern Siberia)...................................................................... B. ( S. ) sibiricum -. Metasoma terga dull, not shiny; mandible 4 teeth ( SOUTH KOREA )................................. B. ( S. ) malaisei