title: Comparative study of the stridulatory sulcus, buccula and rostrum of the nymphs of Triatoma guazu Lent & Wygodzinsky, 1979 and Triatoma jurbergi Carcavallo, Galvão & Lent, 1998 by scanning electron microscopy (Hemiptera, Reduviidae).
abstract: The ultrastructural morphology of the ventral region of the head (rostrum and buccula) and proesternum (stridulatory sulcus) of nymphs from the 1st to 5th instars of Triatoma guazu Lent & Wygodzinsky, 1979 and Triatoma jurbergi Carcavallo, Galvão & Lent, 1998 was described. Morphological differences between the two species and of the five nymphal stages development of each species were observed. These structures showed systematic differential characteristics of the studied species and may be used to increase their taxonomic range.
authors.affiliation: Departamento de Entomologia, Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos, Rio de Janeiro, Brasil.
authors.forename: Maria Beatriz Araújo
authors.initials: MB
authors.lastname: Silva
authors.forename: Helene Santos
authors.initials: HS
authors.lastname: Barbosa
authors.forename: Cleber
authors.initials: C
authors.lastname: Galvão
authors.forename: José
authors.initials: J
authors.lastname: Jurberg
authors.forename: Rodolfo U
authors.initials: RU
authors.lastname: Carcavallo
mesh_terms: D000818:Animals; D006257:Head / Q000033:anatomy & histology; D008855:Microscopy, Electron, Scanning; D009758:Nymph / Q000648:ultrastructure; D014224:Triatoma / Q000648:ultrastructure*