Described as
Metriocnemus exagitans Johannsen, 1905a: p. 303
Synonymy
Metriocnemus brachyneura Malloch, 1915a: p. 418
Metriocnemus ryutanus Sasa and Hasegawa, 1988a: p. 241
Paraphaenocladius impensus : Sasa and Okazawa, 1992a: p. 56 nec Chironomus impensus Walker, 1856