title: Parachironomus lenz from china and Japan (Diptera, chironomidae).
abstract: Members of the genus Parachironomus Lenz known from China and Japan are revised, and a key to their male adults is given. Parachironomuspoyangensis sp. n. is described in this life stage. Parachironomusfrequens (Johannsen) and Parachironomusmonochromus (van der Wulp) are recorded from China for the first time, thus are redescribed from Chinese specimens. Parachironomuskamaabeus Sasa & Tanaka and Parachironomustoneabeus Sasa & Tanaka are new junior synonyms of Parachironomusfrequens. Three Chinese or Japanese species formerly placed in Parachironomus are transferred to other genera, resulting in the new combinations Cryptochironomusinafegeus (Sasa, Kitami & Suzuki), Demicryptochironomus (Irmakia) lobus (Yan, Sæther, Jin & Wang), and Microchironomuslacteipennis (Kieffer). Chironomussauteri Kieffer, Parachironomuskisobilobalis Sasa & Kondo and Parachironomuskuramaexpandus Sasa are removed from Parachironomus; the last of these three denotes a valid species of uncertain generic placement, the first two are nomina dubia.
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Chun-Cai
authors.initials: CC
authors.lastname: Yan
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Yan
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Li
authors.initials: L
authors.lastname: Jiang
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Guo
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Liu
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Xin-Yu
authors.initials: XY
authors.lastname: Ge
authors.affiliation: College of Life Sciences, Nankai University, Tianjin 300071, China.
authors.forename: Xin-Hua
authors.initials: XH
authors.lastname: Wang
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Bao-Ping
authors.initials: BP
authors.lastname: Pan
keywords: Chironomidae; Parachironomus; key; new combinations; new species; new synonyms