Makarchenko E.A., Semenchenko A.A.
Евразиатский энтомологический журнал 2026; 25(2): 91-101
This article reviews chironomids of the genus Arctodiamesa Makarchenko, 1983 from the Arctic regions of Eurasia, as well as from the Russian Far East and Eastern Siberia. Using an integrative method, a new cryptic species, A. brusnevi Krasheninnikov, Makarchenko et Semenchenko, sp.n., is described, and the species A. appendiculata (Lundström, 1915), A. amurensis Makarchenko, 2007, A. marinae Makarchenko, 2005 and A. breviramosa Makarchenko, 1995 are redescribed. Mean K2P interspecific distances between A. brusnevi Krasheninnikov, Makarchenko et Semenchenko, sp.n. from Bolshevik Island of and A. appendiculata (Lundström) from the northern part of the Russian Far East were 8.87 %. Species delimitation (ASAP) confirms that five species of the genus Arctodiamesa Makarchenko are valid. A key to the adult males of known species is given.
