1	Females’ subanal appendage pointed	2
–	Females’ subanal appendage blunt or apically serrated	5
2	Ungues without tunica; at least part of the circumanal chaetae of females basally serrate	A.macronyx Vargovitsh, 2012
–	Ungues with tunica; all circumanal chaetae of females basally smooth	3
3	Eyes absent; unguiculus III without inner teeth; female’s anal valves with 2+2 cuticular spines per side (Fig. 3B)	A.antrobius Yosii, 1954
–	Eyes 1+1; unguiculus III with one inner tooth; female’s anal valves lacking cuticular spines	4
4	Dorsal head with 10 or more spines; dorsal anal valve ms1 chaeta forked; manubrium with 5+5 dorsal chaetae	A.coreanus Park & Kang, 2007
–	Dorsal head with 9 spines; dorsal anal valve ms1 chaeta not forked; manubrium with 9+9 dorsal chaetae	A.minor Park & Kang, 2007
5	Antennae at least two times longer than head length	6
–	Antennae shorter, less than two times the head length	7
6	Body size about about 0.9 mm; manubrium with 5+5 dorsal chaetae	A.abchasicus Vargovitsh, 2013
–	Body size about about 1.2 mm; manubrium with 4+4 dorsal chaetae	A.gul Yosii, 1966
7	Eyes absent; ungues III without tunica; female’s anal valves without cuticular spines	A.pukouensis Wu & Christiansen, 1997
–	Eyes 1+1; ungues III with tunica; female’s anal valves with 2+2 cuticular spines per side	8
8	Female’s anal valves with 1+1 large modified cuticular spines per side	A.potapovi Vargovitsh, 2015
–	Female’s anal valves with only small cuticular spines (Fig. 3B)	9
9	Unguiculus III with one inner tooth; female’s anal valves circumanal chaetae basally serrate	A.caecus (Tullberg, 1871)
–	Unguiculus III toothless or with two inner teeth; female’s anal valves circumanal chaetae basally smooth	10
10	Dorsal head with 13 spines; ungues I–II without tunica; unguiculus III toothless; manubrium with 4+4 dorsal chaetae; dorsal dens with 14 chaetae	A.minutus Yosii, 1970
–	Dorsal head with 9 spines; ungues I–II with tunica; unguiculus III with 2 inner teeth; manubrium with 5+5 dorsal chaetae; dorsal dens with 16 chaetae	A.brevicornis sp. nov.