Morphological aspects of immature stages of Migonemyia migonei (Diptera: Psychodidae, Phlebotominae), an important vector of Leishmaniosis in South America, described by scanning electron microscopy
Fig 3
Scanning electron microscopy of the larva of Migonemyia migonei.
(A) Head of the fourth instar larva in dorsal and ventral view. (B) Long trichoid sensilla observed at the apex of the head (lts) and short trichoid sensilla on the mouthparts (arrow) (A and B scale bars: 20 μm). (C) Head of first instar in dorsal view. Forehead exhibits two weakly brush-like trichoid sensilla (wb-lts) inserted between and slightly forward of the antennae (ant), and long trichoid sensilla (lts) that are inserted further down toward the mouthparts (Scale bar: 20 μm). (D) eb—egg buster; cl—clipeo; md—mandible; ma—maxilla; m—mentum. The setae were numbered according to the chaetotaxy proposed herein: (1 = wb-lts) frontoclipeal anterior setae (weakly brush-like trichoid sensilla); (2 = b-lts) frontoclipeal posterior setae with barbed shape (brush-like trichoid sensilla); (3 = lts) the genal anterior setae with a simple spine form (long and bare trichoid sensilla); (4) the genal medial and (5) genal posterior setae are barbed and brush-like (4 and 5 = brush-like trichoid sensilla); and, in the ventral part (B), (6) the postgenal and (7) subgenal setae are simple (6 and 7 = bare trichoid sensilla).