Abstract
A morphological comparison was made of sand flies captured in the Monte Dourado area of the river Jari, Pará, Brazil and the female holotype of Lutzomyia anduzei (Rozeboom, 1942) in the National Museum of Natural History, Washington. Sand flies similar to those identified and redescribed by Floch & Abonnenc (1944) and Almeida (1970) as L. anduzei differ morphologically from the type specimen and are described here as a new species, Lutzomyia umbratilis. The female of L. anduzei is redescribed and its morphology compared with that of L. umbratilis, n. sp. The epidemiological importance of L. umbratilis as a vector of Leishmania braziliensis guyanensis is discussed.
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