Abstract
A leptomonad parasite was found in the sap of the tomato and in one unidentified plant, but it has not yet been seen in several others on which the insect feeds.Interesting characteristics of this Leptomonas are (a) its extreme polymorphism, (b) the development of metacyclic forms in the salivary glands of its insect host, and (c) its alternation between insect and plant host.
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