Hydrodroma Koch, 1837

Pešić, Vladimir & Smit, Harry, 2022, Water mites of the genusHydrodroma Koch, 1837 (Acari, Hydrachnidia: Hydrodromidae) from Argentina, with description of two new species, Acarologia 1837 (1), pp. 68-83 : 69

Genus Hydrodroma Koch, 1837

Diagnosis (based on Di Sabatino et al. 2010) — Idiosoma soft, without sclerotized dorsalia and ventralia, not laterally compressed wider than high. Cx-I+II medially separated by a fine membranous line; a row of long fine setae along the medial margins of Cx-I, and posterior margins of Cx-II, -III, and –IV. Genital flaps with more or less equally rounded lateral and concave medial margins, bearing fine setae and numerous Ac arranged in several rows along medial edge. Excretory pore sclerotized. Leg claws without claw blade, with a dorsal clawlet. P-2 with pectinate mediodistal setae. P-4 with a long, pointed extension reaching tip of the slender and elongate P-5.