Ventral infraciliature of Aspidisca lynceus (MUELLER,1773) EHRENBERG, 1830.FVC=frontoventral cirri;FM=frontal membranelle;EP=excretory canal of contractile vacuole;TC=transverse cirri;AZM=adoral zone of membranelles.Collected from a freshwater irrigation canal in Boise,Idaho December 2007.Protargol stain (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.