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A longitudinal study of two species of Belostoma Latreille (Heteroptera: Belostomatidae): allometry and ontogeny Neotropical Entomology
Iglesias,Mónica S.; Gaspe,María S.; Valverde,Alejandra C..
The multivariate allometric growth patterns from longitudinal data of leg and rostral segments of all instars of Belostoma elegans (Mayr) and B. cummingsi De Carlo are presented for the first time, and the allometric coefficients are compared. The segments of the middle and hind legs present allometric coefficients with opposite polarity to those of forelegs. This discrepancy in the ontogenetic trajectories may be due to the different functions of the legs. The foreleg main function is to capture of the prey, while the middle and hind legs are adapted to swimming. The relative size of rostral segments is an important taxonomic character in Belostoma. In B. cummingsi, the proximal segment is longer than the middle one, while in B. elegans they are subequal....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nymph; Postembryonic development; Water bug; Morphometry.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000600006
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The small species of Belostoma Latreille (Heteroptera, Belostomatidae). III. A revision of oxyurum group, with a new species from Brazil and description of the male of B. noualhieri Montandon Rev. Bras. entomol.
Ribeiro,José Ricardo I.; Estévez,Ana L..
Species of the oxyurum group (sensu Lauck) consist of five extant Neotropical small species, whose lengths range 15.0 to 20.0 mm. The anterior interocular width about 1.5 times the width of an eye and ventral diverticulum of phallus flattened, circular, and large are, in combination, diagnostic. The small species of the oxyurum group were included in the Lauck´s key to the identification of the species groups, without dealing with the species included in it because many of them are very similar in appearance. Therefore here we redescribe and key the Belostoma species of the oxyurum group. Belostoma oxyurum (Dufour) is newly recorded from Brazil (Paraná and Rio Grande do Sul). Holotype and lectotype are designated for B. oxyurum and B. sanctulum Montandon,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropics; Nepomorpha; Systematic; Water bug.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000200004
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