Abstract
The aim of this paper is to present the analysis of sexual morphological differences observed in 5th instar nymphs of the following species: Panstrongylus megistus; Rhodnius neglectus; Triatoma brasiliensis; T. infestans; T. matogrosensis and T. tibiamaculata. Male and female nymphs were examined and photographed with a Scanning Electron Microscope. The 9th segment dimensions of dorsal and ventral faces were determined through a Profile Projector. Results and statistical analysis showed significant differences: the 9th sternite is significantly broader in male than female nymphs, while in five species; tergites in female nymphs are broad and in male are narrow.
sexual distinction; scanning; nymphs; Triatominae
Sexual distinction between 5th instar nymphs of six species of Triatominae (Hemiptera, Reduviidae)
João Aristeu da Rosa1
José Maria Soares Barata2
Nilso Barelli3
Jair Licio Ferreira Santos4
Francisco Miguel Belda Neto1
UNESP, Faculdade de Ciências Farmacêuticas, Araraquara, Brasil
USP, Faculdade de Saúde pública, São Paulo, Brasil
UNESP, Instituto de Química, Araraquara, Brasil
USP, Faculdade de Saúde Pública, São Paulo, Brasil
The aim of this paper is to present the analysis of sexual morphological differences observed in 5th instar nymphs of the following species: Panstrongylus megistus; Rhodnius neglectus; Triatoma brasiliensis; T. infestans; T. matogrosensis and T. tibiamaculata. Male and female nymphs were examined and photographed with a Scanning Electron Microscope. The 9th segment dimensions of dorsal and ventral faces were determined through a Profile Projector. Results and statistical analysis showed significant differences: the 9th sternite is significantly broader in male than female nymphs, while in five species; tergites in female nymphs are broad and in male are narrow.
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Publication Dates
-
Publication in this collection
04 June 2009 -
Date of issue
June 1992
