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Revista Peruana de Medicina Experimental y Salud Publica

Print version ISSN 1726-4634


LIZARASO, Yolanda. Estudio Morfológico de los huevos de algunos Triatominos hallados en el Perú: Reduviidae, Hemiptera. Rev. perú. med. exp. salud publica [online]. 1957, vol.11, n.1-2, pp.51-69. ISSN 1726-4634.

A morphological study was conducted on the following species of peruvian triatomids: Triatoma infestans (KLUG 1834); T. dimidiata (LATREILLE, 1811); T. carrioni, LARROUSSE, 1926; Panstrongy1us chinai, (DEL PONTE, 1929); P. herreri, WYGODZINSKY, 1948 and Belminus peruvianus, HERRER, et al., 1954. Both the macroscopic morphology as well as the microscopic ornamentation of the triatomid eggs were considered in this study. In all species, eggs were collected from the insects reared in the laboratory. In three instances it was also possible to obtain eggs which had been layed in a natural environment. The conclusions of the study were as follows. 1 . While the eggs of each species of triatomid studied appeared to be consistent in dimensions within species, there was a statistically significant difference in the dimensions of eggs between species. The same relationships held also with respect to microscopic ornamentation of the egg shells. 2. Statistically significant differences were also observed within certain species between the gross dimensions of eggs collected in nature as compared to those obtained from insects reared in the laboratory. On the contrary, the microscopic ornamentation of the shells of both groups remained similar. 3. The need for employing the same technique throughout the preparation of all samples in such a correlation study is emphasized. 4. It is concluded that the most important differentiating characteristic in the species identification of triatomid eggs is microscopic ornamentation, while gross dimensions are of only secondary significance. 5. A classification chart or "identification key" is presented based mainly on the microscopical ornamentation of the egg.

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