Omartacarus (Omartacarus) ferradasae Cook, 1988

Smit, Harry, 2021, New records of water mites from Chile (Acari: Hydrachnidia), with the description of three new species, Acarologia 61 (2), pp. 274-290 : 279-280

Omartacarus (Omartacarus) ferradasae Cook, 1988

( Figure 2 A­B)

New record. 0/1/0, Río San Pedro, interstitial, at Puente Puchagran, prov. Chiloé, 42°23.676 ′ S 73°52.568 ′ W, 91 m a.s.l., 21 Dec. 2018.

Description. Female: Total length cannot be measured, but coxal field 231 long and 172 wide. Gnathosoma with a long rostrum ( Figure 2A ). Genital field 40 long with ten pairs of acetabula. Length of P1­5: 26, 34, 54, 86, 58. P4 with a short, stout seta and two hair­like setae, P5 slender ( Figure 2B ). First leg cannot be measured, length of IV­leg­4­6: 140, 152, 90. Swimming setae absent.

Remarks. The female matches the description of Cook (1988) well in the gnathosoma with a long rostrum and P4 with a short, stout seta.

Distribution. Thus far, known from the holotype male only from the interstitial of a stream near Lago Chapo, Llanquihue Province, Chile.

Figures

Figure 2 Omartacarus ferradasaeCook, female. A – palp + gnathosoma; B = P3­5. Scale bars = 50 µm.