▁For amin if era . ▁They ▁are ▁included ▁among ▁the ▁Cer co zo a ▁( al ong ▁with ▁L ec yth ium ), ▁but ▁differ ▁from ▁other ▁cer co zo ans ▁in ▁having ▁mit och ond ria ▁with ▁flat ▁crist ae , ▁rather ▁than ▁tub ular ▁crist ae . ▁ ▁G ymn oph rys ▁com eta , ▁found ▁in ▁fresh water ▁and ▁soil , ▁is ▁representative ▁of ▁the ▁group . ▁ ▁The ▁cell ▁body ▁is ▁under ▁ 1 0 ▁ μ m ▁in ▁size , ▁and ▁has ▁a ▁pair ▁of ▁reduced ▁flag ella , ▁which ▁are ▁smooth ▁and ▁insert ▁parallel ▁to ▁one ▁another . ▁ ▁It ▁may ▁also ▁produce ▁mot ile ▁zo os por es ▁and ▁c yst s . ▁ ▁G ymn oph rys ▁and ▁B ork ov ia ▁are ▁the ▁only ▁confirmed ▁gener a , ▁but ▁other ▁n aked ▁ret icul ose ▁am o eb ae ▁such ▁as ▁Bi omy xa ▁may ▁be ▁close ▁relatives . ▁ ▁Tax onomy ▁ ▁Family ▁G ymn oph ry idae ▁Mik r j uk ov ▁& ▁My ln ik ov ▁ 1 9 9 6 ▁ ▁Gen us ▁G ymn oph rys ▁C ien kow ski ▁ 1 8 7 6 ▁ ▁Species ▁G ymn oph rys ▁com eta ▁< small > C ien kow ski ▁ 1 8 7 6 ▁non ▁C ien kow ski ▁ 1 8 7 6 ▁sens u ▁Pen ard ▁ 1 9 2 1 ▁ ▁Gen us ▁B ork ov ia ▁Mik r j uk ov ▁& ▁My ln