title: [Description of the immature stages of Chinavia erythrocnemis (Berg) (Hemiptera: Pentatomidae)].
abstract: Adults and nymphs of Chinavia erythrocnemis (Berg) were colected on Sebastiania commersoniana (Baill.) Smith & Downs in the Parque Estadual do Espinilho in Barra do Quarai county, RS, and used to establish a laboratory culture reared on green pods of Phaseolus vulgaris L. Egg coloration is light-brown, chorion is reticulated and aero-micropylar processes are clubbed and white; mean number of aero-micropylar processes is 61. Eggs are very similar to those from other Neotropical Chinavia species, but the average number of 12 eggs/mass is unique among Chinavia species. Nymphs are predominantly black, with the distal part of the head, femur, and the basal part of tibia, red. First instar has the dorsal maculae of the head and thorax in red coloration, and the abdomen with a series of 3+3 dorsal white maculae. Second to fifth instars have 1+1 white maculae on lateral margins of pronotum and 2+2 white maculae on abdome. Fourth and fifth instars show an ovate white maculae in the middle of lateral plates of abdomen. Nymph coloration and the size, number and position of the maculae on pronotum and abdomen are diagnostic to C. erythrocnemis.
authors.affiliation: Programa de Pós-Graduação em Biologia Animal, Depto. Zoologia, IB, Univ. Federal do Rio Grande do Sul, Porto Alegre, RS. vimatesco@yahoo.com.br
authors.forename: Viviana C
authors.initials: VC
authors.lastname: Matesco
authors.forename: Cristiano F
authors.initials: CF
authors.lastname: Schwertner
authors.forename: Jocélia
authors.initials: J
authors.lastname: Grazia
mesh_terms: D000818:Animals; D006430:Hemiptera / Q000254:growth & development*; D009758:Nymph