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Next-generation sequencing data analysis on    Triatoma   infestans    Klug, 1834 (  Heteroptera  ,   Cimicomorpha  ,   Reduviidae  ) revealed the presence of the ancestral insect (TTAGG) n  telomeric motif in its genome. Fluorescence  in situ  hybridization confirms that chromosomes bear this telomeric sequence in their chromosomal ends. Furthermore, motif amount estimation was about 0.03% of the total genome, so that the average telomere length in each chromosomal end is almost 18 kb long. We also detected the presence of (TTAGG) n  telomeric repeat in mitotic and meiotic chromosomes in other three species of   Triatominae  :    Triatoma   dimidiata    Latreille, 1811,    Dipetalogaster   maxima    Uhler, 1894, and    Rhodnius   prolixus    Ståhl, 1859. This is the first report of the (TTAGG) n  telomeric repeat in the infraorder   Cimicomorpha  , contradicting the currently accepted hypothesis that evolutionarily recent heteropterans lack this ancestral insect telomeric sequence.

comparative cytogenetics

The presence of the ancestral insect telomeric motif in kissing bugs (  Triatominae  ) rules out the hypothesis of its loss in evolutionarily advanced   Heteroptera   (  Cimicomorpha  )