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 (29) Parancistrocerus yachowensis Giordani Soika, 1986 Figs 98-100 Parancistrocerus yachowensis Giordani Soika, 1986: 125, figs. 31, 33, " Cina : Szechuan, Tachow", USNM. Type: female. Material examined. CHINA : Hong Kong : 2♀ , Fung Yuen Li & Pak Sha O , hand net , 31.viii.2006 & 17.iv.2011 , UTM: 50Q KK 097 873 & 50Q KK 242 849, 30m & 70m , Refs.: 0228. E.Hy. 4 & 0435. A.Hy. 1 [CBC]; 1♀ , Pak Sha O , Malaise trap , 27.iv.-14.v.2009 , UTM: 50Q KK 242 849, 70m , Ref. : M061. C.Hy. 13 [CBC] . INDONESIA : North Sulawesi : 1♀ , Tomohon , hand net , 08.vi.2008 , 01°20'N , 124°50'E , 720m , Ref. : 0290. C.Hy. 1 [CBC] . Distribution. China (*Hong Kong, Sichuan, Taiwan); *Indonesia (North Sulawesi: Tomohon); Laos. Remarks. Two subspecies are recognized, P. y. konkunesis Giordani Soika, 1994 and P. y. yachowensis Giordani Soika, 1986. The Hong Kong material shows a mix of characters used by Giordani Soika (1994) and Li and Carpenter (2018) between the nominotypical form and P. y. konkunesis which does not allow us to conclude the subspecific placement of our Hong Kong material. In addition, a specimen from Sulawesi collected by CB and examined by JC, is recognized as similar to the Hong Kong material, increasing substantially the biogeographic range of this taxon.