Acaricis Beard & Gerson, 2009

Beard, Jennifer J. & Seeman, Owen D., 2025, A new flat mite genus and five new species (Tetranychoidea: Tenuipalpidae) from native Australian sedges (Cyperaceae), Zootaxa 5637 (1), pp. 1-56 : 2

Acaricis Beard & Gerson, 2009

Type species: Acaricis plana Beard & Gerson, 2009: 32 .

Diagnosis (modified from Beard & Gerson 2009, Xu & Zhang 2013, Castro et al. 2018).

Adult female. Body elongate, about 1.7–3 times longer than wide; prodorsal and opisthonotal shields poorly defined. Palps 4-segmented; palp tarsus with 2 terminal phaneres (both long). Anterior margin of prodorsum with short to moderately long median forked projection forming a notch; dorsal opisthosoma with 9 pairs of setae (c3, d1, d3, e1, e3, f2, f3, h1, h2 present; c1, c2, d2, e2 absent); most dorsal setae short, fine to broadly lanceolate, with pointed tips; seta h2 flagellate. Ventral and genital shields not developed, both regions membranous and merged together; two pairs of ps setae, anal valves membranous, setae ps3 inserted far anterior to ps2; ventral setae g1 inserted anterior to g2; 4a1–2 present, elongate, fine; lacking supernumerary coxal setae 3a2. Trochanters 1-1-1-0 or 1-1-2-1; femora 4-4-2-2 or 4-4-2-1, femur I–II with d inserted laterally (heteromorphic with respect to dorsal idiosomal setae); genua 2-2-1-0 (d absent on ge I–II) or 2-2-0-0 (d absent on ge I–II, lʹ absent on ge III); tarsi 8(1)- 8(1)-5-5, setae ftʺ absent on tarsi I–II, setae ftʹ on tarsi I–IV finely elongate. Tarsal claws and empodia pad-like. Adult male. With 2 solenidia present on tarsi I–II; 0–1 solenidion present on tarsi III–IV.