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Cytotaxonomy of the triatominae (Reduviidae: Hemiptera)

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The chromosome number and meiotic cycle of 20 species of Triatominae have been investigated. In the male, there are five types of chromosome complement: 20+XY, 20+X1X2Y, 20+X1X2X3Y, 18+XY and 22+XY.The cytological data suggest that the type number for the subfamily is 22 (20+XY). In the hybrids: Triatoma barberi (♀♀) and T. protracta (♂♂), anomalous behavior of certain chromosomes has been observed. Phylogenetic relationships based on chromosome evidence in the subfamily have been discussed. It is suggested that fragmentation is the major factor for chromosome evolution in the group.

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Ueshima, N. Cytotaxonomy of the triatominae (Reduviidae: Hemiptera). Chromosoma 18, 97–122 (1966).

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