2. GENUS ARCHEOXUS SMIRNOV, 1992

(SMIRNOV, 1992A: 112).

Type species: Archeoxus mirabilis Smirnov, 1992 .

Diagnosis: Body moderately high with postero-dorsal angle ill defined or completely absent, head capsule of ‘chydorid-type’ (strongly compressed dorso-ventrally), head shield with acute rostrum, valves without marginal setae, antenna II relatively long, mandible attached to point of joint of head shield and valve.