Momonia (Orientmomonia), Pešić, 2014

Pešić, Vladimir, 2014, Checklist of the water mites (Acari, Hydrachnidia) of Korea, with description of one new subgenus and two new species, Ecologica Montenegrina 1 (4), pp. 204-230 : 223

Subgenus Orientmomonia nov. subgen.

Diagnosis. Characters of the genus Momonia (see Cook 1974); dorsal shield composed of small anterior and a large posterior plate, flanked by ring composed of 7 pairs of platelets, with 1th, 2nd, 4th, 5th, 6th and 7th pairs bearing glandularia, and 4 pairs of tiny sclerites bearing slit organs.

Type species. Momonia koreana n. sp.

Remarks. The genus Momonia includes six species from three subgenera. The typical subgenus is known from Europe (one species) and North America (three species). Two other subgenera are monotypic, Momonia karelica (Sokolow, 1926) , type species of the subgenus Kondia Sokolow, 1926 , is known from two female specimens from Russia and Sweden; M. fuscina Yi & Jin, 2012 , type species of the subgenus Paramomonia Yi & Jin, 2012 , was described in both sexes from China ( Yi & Jin 2012). In these three subgenera, the idiosoma varies from mostly membranous, lacking extensive shields ( Kondia ) to heavily sclerotized, with dorsal and ventral shields, dorsal shield entire ( Paramomonia ) or consisting of anterior and posterior plates ( Momonia s.s.). The new subgenus resembles Momonia s.s. due the presence of a two­parted dorsal shield but differs in a ring composed of 7 pairs of platelets flanking anterior and posterior plates of dorsal shield. The cyclic arrangement of dorsal platelets appears to represent a unique evolutionary development that does not indicate close relationship with other known subgenera.