title: A new species of Xorides Latreille (Hymenoptera, Ichneumonidae, Xoridinae) parasitizing Pterolophia alternata (Coleoptera, Cerambycidae) in  Robinia pseudoacacia.
abstract: A new species is described, Xorides benxicus Sheng, sp. n., reared from the cerambycid twig-boring pest of Robinia pseudoacacia Linnaeus, Pterolophia alternata Gressitt, 1938, in Benxi County, Liaoning Province, China. A key is given to the species similar to Xorides benxicus Sheng, namely Xorides asiasius Sheng & Hilszczański, 2009, Xorides cinnabarius Sheng & Hilszczański, 2009 and Xorides sapporensis (Uchida, 1928).
authors.affiliation: General Station of Forest Pest Management, State Forestry Administration, 58 Huanghe North Street, Shenyang 110034, P. R. China.
authors.forename: Mao-Ling
authors.initials: ML
authors.lastname: Sheng
authors.forename: Rui-Xing
authors.initials: RX
authors.lastname: Zhao
authors.forename: Shu-Ping
authors.initials: SP
authors.lastname: Sun
keywords: Cerambycidae; China; Pterolophia alternata; Xorides; host plant; idiobiont; key; new species; parasitoid wasp