The Eumeninae (Hymenoptera, Vespidae) of Hong Kong (China), with description of two new species, two new synonymies and a key to the known taxa Author Li, Ting-Jing https://orcid.org/0000-0001-7175-2697 Chongqing Key Laboratory of Vector Insects, Chongqing Key Laboratory of Animal Biology, Institute of Insect and Molecular Biology, Chongqing Normal University, Chongqing 401331, China Author Barthelemy, Christophe https://orcid.org/0000-0002-8234-6237 Sai Kung, Hong Kong, China Author Carpenter, James M. https://orcid.org/0000-0001-6754-8028 Division of Invertebrate Zoology, American Museum of Natural History, Central Park West at 79 th Street, New York, NY 10024, USA carpente@amnh.org text Journal of Hymenoptera Research 2019 2019-10-31 72 127 176 http://dx.doi.org/10.3897/jhr.72.37691 journal article http://dx.doi.org/10.3897/jhr.72.37691 1314-2607-72-127 AE0E30B10C2B4DD29CA61CE1637EF549 E9CDD829961E5C38A13A58715E05E056 3532257 (15) Anterhynchium (Dirhynchium) flavomarginatum flavomarginatum (Smith, 1852) Figs 49-55 , 143-146 Rhynchium flavo-marginatum Smith, 1852: 35, type locality: not indicated although probably North China, NHMUK. Type: female. Material examined. CHINA : Hong Kong : 4♀ 4♂ , Pak Sha O, reared, 20.iv.2010 , 01.v.2010 , 19.v.2010 , 19.v.2013 & 11.vi.2016 , UTM: 50Q KK 242 852, 70m , refs.: 0395. A.Hy. 1, 0403. A.Hy. 1, 0502.A. Hy. 1 & 0596.G. Hy. 1 [CBC] ; 1♀ , High Island Reservoir, Sai Kung , hand net , 28.viii.2012 , UTM: 50Q KK 269 786, 150m , ref.: 0482. B.Hy. 6 [CBC] ; 1♀ , Ping Shan Chai , hand net , 04.vi.2016 , UTM: 50Q KK 106 893, 140m , ref.: 0592. B.Hy. 7 [CBC] ; 13♂ , Pak Sha O, reared, 22.vi.2009 , 11.viii.2009 , 25.iv.2010 , 22.vii.2010 , 24.vii.2010 , 29.vii.2010 , 28.iv.2011 , 15.vi.2011 , 12.v.2013 , 17.v.2013 & 24.iv.2016 , UTM: 50Q KK 242 849, 70m , refs.: 0349.A.Hy.2 [CBC], 0369.A.Hy.1 [CBC], 0398.A.Hy.1 [CBC], 0422.A.Hy.1, leg. C. Barthelemy [AMNH], 0424.A.Hy.1 & 2 [CBC], 0425.A.Hy.1 & 2 [CBC], 0438.A.Hy.1 [CBC], 0441.A.Hy.1 [CBC], 0498.A.Hy.1 [CBC], 0501.A.Hy.1 [CBC] & 0583.C.Hy.1, leg. C. Barthelemy [AMNH]; 6♀ , same location, Malaise Trap , 14-31.v.2009 , 31.v.-23.vi.2009 , 21.xi.-26.xii.2010 , 03-24.vii.2011 & 29.ix.-14.x.2012 , refs.: M062.C. Hy. 10 [CBC], M063.C. Hy. 1 [CBC], M085.C. Hy. 1 & 2, leg. C. Barthelemy [AMNH], M095.C. Hy. 2, leg. C. Barthelemy [AMNH] & M116. C.Hy. 1 [CBC] . Distribution. China (Chongqing, Fujian, Guangxi, Hong Kong, Jiangxi, Shanghai, Sichuan, Zhejiang); Pakistan; India; Nepal; Laos; Vietnam, Mongolia; Korea; Japan. Remarks. An abundant wasp in Hong Kong. Dover (1926) first recorded this species from Hong Kong as Odynerus (Rygchium) flavomarginatum Sauss. Its nesting biology was described by Barthelemy (2012) and erroneously identified as Xenorhynchium sp.1. Cells are mass-provisioned with caterpillars belonging to the family Crambidae ( Barthelemy , 2012). There are two colour forms locally (see Figs 52-55 ). In fact this taxon is known for its colour variability and the nominotypical species has no less than 11 recognised subspecies, which is far from being satisfactory, further elucidation of this taxon is needed. Figures 43-55. Anterhynchium mellyi , female 43 habitus (lateral view) 44 habitus (dorsal view) 45 head (frontal view) 46-48 Anterhynchium flavolineatum , female 46 habitus (lateral view) 47 habitus (dorsal view) 48 head (frontal view) 49-55 Anterhynchium flavomarginatum flavomarginatum ,female 49 habitus (lateral view) 50 habitus (dorsal view) 51 head (frontal view) 52-53 variation of markings on propodeum, T1 & T2 54-55 variation of face markings.