Ventilatory structures in Cryphocricos barozzii Signoret (Heteroptera, Naucoroidea)

  • LOPEZ-RUF M
  • PELLERANO G
  • BACHMANN A
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Abstract

Plastron and spiracular features strongly resemble those of Aphelocheirus aestivalis (Fab.), described by Messner et al. (1981). Plastronal foliose hairs, somewhat irregular shaped are regularly distributed in the plastron. Very numerous tiny openigs on sternites an tergites connect platronal air with a subcuticular air film limited internally apparently by a membrane. Aplicated, radial, structure at the proximal end of the tracheae, almost occluding the extremely fine spiracular openings, appear with lesser variations in both species, suggesting close relationships than accepted until now.Descrevem-se estruturas muito semelhantes às de Aphelocheirus aestivalis (Fab.) (Messner et al., 1981). Os pêlos plastronais têm forma de folha e encontram-se distribuídos regularmente no plastron. Aberturas muito pequenas nos esternitos e tergitos conectam o ar plastronal com o ar subcuticular, e estão limitadas internamente por uma membrana. A estrutura na zona próxima à traquéia é similar nas duas espécies comparadas, sugerindo relações mais próximas que as aceitas até agora.

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LOPEZ-RUF, M. L., PELLERANO, G. N., & BACHMANN, A. O. (2000). Ventilatory structures in Cryphocricos barozzii Signoret (Heteroptera, Naucoroidea). Revista Brasileira de Biologia, 60(2), 267–273. https://doi.org/10.1590/s0034-71082000000200010

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