Ommatocepheus Berlese 1913

Genus Ommatocepheus Berlese, 1913 Type species: Ommatocepheus ocellatus (Michael, 1882). Keys to all known species and subspecies of Ommatocepheus (except fossils) 1. Short lamellar protrusions, the distal ends do not touch each other.............................................. 2 - Long lamellar protrusions, the distal ends touch each other.................................................... 4 2. Lamellae and lamellar projections reduced, do not reach rostrum border (515–569 × 213–338)................................................................................. O. parvilamellatus Pérez-Íñigo & Pérez-Íñigo jr., 1996 - Lamellae and lamellar protrusions well developed........................................................... 3 3. Notogaster reticulated, seta c present (605–712 × 445–516)..................... O. reticulatus Pérez-Íñigo & Peña, 1997 - Notogaster foveolate, seta c absent (506–590 × 308–374)..................... O. crassisetosus Pérez-Íñigo et Peña, 1996 4. Interlamellar setae claviform............................................................................ 5 - Interlamellar setae different............................................................................. 6 5. Notogastral setae straight and acuminated (474 × 300)................... O. clavatus clavatus Woolley et Higgins, 1964 - Notogastral setae curved club-shaped, unilaterally rugose (477–620 × 280–360)........ O. clavatus japonicus Aoki, 1974 6. Interlamellar setae lanceolate, short adanal setae (565–620 × 329–395).................................................................... O. ocellatus (Michael, 1882) (See illustrations in Travé 1963; Colloff 1984; Pérez-Íñigo 1997) - Interlamellar setae rod-shaped, very long and thick adanal setae (547–658 × 352–400)............... O. quetzalli sp. nov.