Biological aspects of crosses between Triatoma maculata (Erichson, 1848) and Triatoma pseudomaculata Corrêa & Espínola, 1964 (Hemiptera: Reduviidae)

Mem Inst Oswaldo Cruz. 2007 Jun;102(4):517-21. doi: 10.1590/s0074-02762007005000029.


Due to morphological similarities between Triatoma maculata and T. pseudomaculata, which comprise the "maculate complex", both had been regarded as the same species until 1964. Considering that the studies on triatomine hybridization permit hypotheses formulation concerning origin and divergence of species, enabling a quantitative analysis of taxonomic relationships between species, the present investigation was aimed at broadening further understanding related to the capacity of hybrid production by determining the degree of reproductive isolation between T. maculata and T. pseudomaculata. Our results have demonstrated that T. maculata and T. pseudomaculata showed no differences regarding reproduction patterns and they are able to cross, generating infertile hybrids.

MeSH terms

  • Animals
  • Crosses, Genetic*
  • Female
  • Hybridization, Genetic / genetics*
  • Infertility / genetics
  • Male
  • Triatoma / classification
  • Triatoma / genetics*