Ontogeny of morphological traits in Oribatella palustris Hammer, 1962, with remarks on juveniles of Oribatellidae (Acari: Oribatida) Author Bayartogtokh, Badamdorj Author Ermilov, Sergey G. text Zootaxa 2019 2019-12-31 4717 1 85 103 journal article 24448 10.11646/zootaxa.4717.1.8 5fd68510-ed87-4d0a-868e-6f1668454e67 1175-5326 3602068 9552345D-8C1E-4E3F-9016-48CF88737A98 Key to known larvae of Oribatella 1 Gastronotum with 12 pairs of setae, h 1 well developed; all or most gastronotic setae thin, setiform..................... 2 - Gastronotum with 11 pairs of setae, h 1 absent; all gastronotic setae very broad, leaf shaped................................................................................................ Oribatella nortoni Behan-Pelletier, 2011 2 All gastronotic setae thin, setiform........................................................................ 3 - Gastronotic setae c 1 , da , dm and dp very broad, leaf shaped, other setae setiform............................................................................................. Oribatella yukonensis Behan-Pelletier & Walter, 2012 3 Bothridial seta short, shorter than interlamellar seta, clavate.................................................... 4 - Bothridial seta long, nearly as long as interlamellar seta, mostly fusiform, rarely clavate............................. 6 4 Gastronotic setae very long, extending insertions of next two rows of setae; exobothridial seta very long, longer than interlamellar seta.............................................................................................. 5 - Gastronotic setae medium long, extending only setal insertions of next one row; exobothridial seta very short, about ¼ length of interlamellar seta............................................................ Oribatella arctica Thor, 1930 5 Gastronotic seta h 3 medium long, thick, barbed; interlamellar setae short, not reaching rostrum................................................................................................. Oribatella berlesei ( Michael, 1898 ) - Gastronotic seta h 3 short, thin, smooth; interlamellar setae very long, extending beyond rostrum................................................................................................ Oribatella calcarata ( Koch, 1835 ) 6 Bothridial seta fusiform, pointed distally................................................................... 7 - Bothridial seta clavate, rounded distally................................................................... 9 7 Bothridial seta very long, longer than exobothridial seta....................................................... 8 - Bothridial seta much shorter than exobothridial seta......................... Oribatella quadricornuta (Michael, 1880) 8 Prodorsal and gastronotic setae inserted on large tubercle; distance between pair of setae da -da same as that between c 1 – c 1 ........................................................................ Oribatella metzi Behan-Pelletier, 2011 - Prodorsal and gastronotic setae inserted not on large tubercles, but on dorsal shield; distance between pair of setae da -da greater than that between c 1 – c 1 ..................................................... Oribatella sexdentata Berlese, 1916 9 Gastronotic setae very thick, same thickness throughout its length, strongly barbed.............................................................................................. Oribatella pawnee Behan-Pelletier & Walter, 2012 - Gastronotic setae thin, tapered distally, normally barbed.......................... Oribatella superbula ( Berlese, 1904 )