Leptomonas capsularis n.sp. and other flagellates parasitic in Cletus ochraceus (Hemiptera)

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Abstract
It has recently been shown (Gibbs, 1950), in the case of Crithidia familiaris, parasitic in the digestive tract of Cenaeus carnifex (Hemiptera), that resistant, infective bodies are produced in the hind-gut by an unequal division leptomonads. One of the two daughter-cells fails to grow a flagellum but remains attachedm, by a thread, to the flagellum of the other. Laterm the non-flagellate body becomes more compact in form and finnaly becomes invested in a tough, protective periplast. It then becomes detached from the parent flagellate. Large numbers of these bodies are scattered in the faeces, and it has been shown that they are capable of infecting fresh insects when ingested. The purpose of the attachment of the non-motile, immature infective body to an active flagellate is apparently to prevent its being prematurely swept from the gut.

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