Contribution to the knowledge of the genus Plenotocepheus (Acari, Oribatida, Otocepheidae) Author Ermilov, S. G. text Acarologia 2017 2017-04-07 57 2 383 391 http://dx.doi.org/10.1051/acarologia/20174163 journal article 10.1051/acarologia/20174163 2107-7207 5404172 Genus Plenotocepheus Hammer, 1966 Type species: Plenotocepheus mollicoma Hammer, 1966 , p. 66 Generic diagnosis Adult — Otocepheidae (e.g. Aoki 1961 – as for Tetracondylidae, Aoki 1965 ; key to families in Norton & Behan-Pelletier 2009 ). Body elongate oval. Pedotecta I and II represented by small laminae. Prodorsal and notogastral condyles normally developed or selectively absent. Medial prodorsal and medial notogastral condyles never fused in one medial unpaired condyle. Costulae long, parallel, reaching or not the insertions of lamellar setae. Prodorsal setae setiform (exception: interlamellar setae in P. ensifer ). Bothridial setae clavate, fusiform or lanceolate. Notogaster with 12 or 14 pairs of setae setiform or flagellate, rarely ensiform, usually long (sometimes longer than notogaster). Epimeral setal formula 3-1-3-3. Three pairs of genital, one pair of aggenital, two pairs of anal and three pairs of adanal setae. Aggenital condyles absent. Adanal lyrifissures distanced from anal plates, located in inverse apoanal or direct apoanal positions or transversely oriented. Adanal setae ad 3 inserted laterally or anteriorly to iad . Leg setae u on tarsi simple. Juvenile instars . Not known.