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1 July 2000 Morphology of Larval Antennae and Mouthparts of Four Indian Sand Flies (Diptera: Psychodidae) by Scanning Electron Microscopy
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Abstract

The mouthparts and antennae of the fourth-instar larvae of four sand fly species were studied using scanning electron microscopy. The morphology of the clypeus, labrum, mandible, maxilla, mentum, and antennae were compared forPhlebotomus argentipesAnnandale & Brunetti,P. papatasin(Scopoli),Sergentomyia babu babu(Annandale), andS. bailyi(Sinton). Most of structures exhibited species-specific features, particularly the characteristics of the antennae.P. papatasinlarvae had heart-shaped antennae, a long mandible, stout maxilla, and a heavy mentum with large teeth. In contrast,P. argentipeslarvae had dumbbell-shaped antennae and a singular club-shaped labrum. The antennae ofS. b. babuwere ovoid, whereas those ofS. bailyiwere elliptical. The labrum ofS. b. babuwas lanceolate, whereas that ofS. bailyiwas rounded and exhibited a small, thick projection with several folds. The teeth of the mentum of bothSergentomyiaspecies were shorter than those of thePhlebotomusspecies. Species-specific differences in the morphology of larval mouthparts and antennae indicate that it may not always be necessary to rely on adult morphology to identify sympatric phlebotomines.

Jaba Mukhopadhyay and Kashinath Ghosh "Morphology of Larval Antennae and Mouthparts of Four Indian Sand Flies (Diptera: Psychodidae) by Scanning Electron Microscopy," Journal of Medical Entomology 37(4), 575-580, (1 July 2000). https://doi.org/10.1603/0022-2585-37.4.575
Received: 3 November 1998; Accepted: 1 March 2000; Published: 1 July 2000
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