Trypanosoma lucknowi, a New Species of Trypanosome fromMacaca mulattawith Observations on Its Fine Structure1

Abstract

T. lucnowi sp. nov. was isolated inculture from 1 of 126 M. mulatta originating from the vicinity of Lucknow, Uttar Pradesh, India. T. lucknowi is distinctive because of the large number of epimastigotes and trypomastigotes which, in culture, exhibit no movement or only a slight bending of the flagellar end. This limited motility coincides with a free flagellum which is either completely absent or rudimentary. The microorganism is cloned readily the description is based upon such cultures. T. lucknowi shows pronounced differences from other trypanosomes of South Asian macaques and from aflagellar African trypanosomes. The ultrastructureal demonstration of a cytostome and contractile vacuole suggests ultimate grouping with stercorarian trypanosomes. A 3-D reconstruction of the flagellar pock cytostome region is included.