Arctoseiinae, Evans, 1963

Makarova, Olga L., Marchenko, Irina I. & Lindquist, Evert E., 2021, Distribution, habitats, and redescription of the rare mite species Iphidonopsis sculptus Gwiazdowicz, 2004 (Mesostigmata: Ascidae), Zootaxa 4952 (3), pp. 448-464 : 451

Key to tribes of subfamily Arctoseiinae (adults)

1. Tarsi II–IV with setae (d -2) elongated, whiplike; subcapitular seta hp -1 and internal palptrochanter seta elongated, curved; dorsal shield usually fully covering body dorsum, often with 1–8 pairs of paddle-shaped setae; sternal/sternitigenital shield fused with endopodal sclerites between coxae I–II and coxae II–III; peritreme long, its margins usually crenulate in different degrees; genu III with eight setae; female with ventrianal shield bearing 1–6 pairs opisthogastric setae, or this shield rarely ( Iphidonopsis ) reduced to broadly expanded anal shield (with circumanal setae only)....................... Zerconopsini tribe n.

- Tarsi II–IV with setae (d -2) unmodified; subcapitular seta hp -1 and internal palptrochanter seta not elongated; dorsal shield fully or partly covering body dorsum, without paddle-shaped setae; sternal/sternitigenital shield fused with endopodal sclerites between coxae I–II and coxae II–III or not; peritreme long or shortened, its margins usually smooth; genu III with seven setae; female with anal shield or expansive ventrianal shield bearing 6 pairs of opisthogastric setae......................... 2

2. Female and male with metapodal platelets incorporated into expansive ventrianal shield bearing 6 pairs of opisthogastric setae; male with sternitigenital shield fully consolidated with endopodal strips alongside coxae I–IV.......... Maxiniini tribe n.

- Female with 1–2 pairs of metapodal platelets free from anal shield bearing only three circumanal setae (exception—shield of Arctoseius magnanalis Evans, 1958 with additional pair of opisthogastric setae); male with metapodal platelets free or incorporated into ventrianal (or rarely separate ventral and anal) shield; male with sternitigenital shield separated from endopodal strips between coxae III–IV.......................................................... Arctoseiini Evans, 1963