Genus PSEUDOCHERMES Nitsche

Pseudochermes Nitsche, 1895: 1247‒1249 . Type species: Chermes fraxini Kaltenbach by original designation. Apterococcus Newstead, 1898: 97 .

Diagnostic characters of the adult female: Slide-mounted body oval or almost circular; posterior end of body rounded, without recognisable anal lobes but with normal apical setae. Suranal setae normal. Antennae each with 6 segments. Labium short, basal segment with a single pair of setae. Stylet loop much longer than body. Legs well developed and robust; hind coxa with a group of translucent pores, claw with a denticle. Dorsal setae short, narrow but spine-like, slightly enlarged posteriorly. Macrotubular ducts present on both surfaces. Microducts slender and elongate, with simple orifice. Spiracles each with 1–3 associated quinquelocular disc-pores. Anal ring crescentic (open anteriorly), bearing 6 stout setae and pores. Anal tube well developed, sclerotized. Quinquelocular pores present on both surfaces. Cruciform pores absent.

Comments: Worldwide, three species are included in Pseudochermes (García Morales et al. 2016); only P. fraxini (Kaltenbach) has been recorded from Iran (Hoy 1963).