Table 1 Geographical origin and chromosomal traits of seven Triatoma species analysed in the present studyk

T. rubrofasciata

(2n = 22A + X₁X₂Y)

Vietnam, Hanoi, Tu Liem district. P.

21°2′48″N, 105°44′54″E

40%; 11 II with C-blocks in both chromosomal ends [22]

T. dimidiata

(2n = 20A + X₁X₂Y)

Guatemala, Jutiapa, Carrizal. D.

14°25′48″N, 89°57′28″W

10%; 10 II with C-dots in both ends [23]

T. barberi

(2n = 20A + X₁X₂Y)

Mexico, Queretaro, La Cueva. P.

20°29′4″N, 100°26′20″W

35%; 10 II with C-blocks in both ends [15]

T. nitida

(2n = 18A + X₁X₂Y)

Guatemala, Quiché, Zacualpa, D.

15°1′34″N, 90°52′42″W

25%; 2 II almost entirely C-heterochromatic [15]

T. lecticularia

(2n = 20A + XY)

Insectary CDC (Atlanta). Origin: USA, Oklahoma, Walkiria.

30%; 10 II with C-blocks in both ends [15]

T. infestans (non-Andean lineage)

(2n = 20A + XY)

Argentina, Chaco, Tres Estacas. P.

26°54′30″S, 51°40′23″W

24–30%; 2–4 II with C-blocks in one or both ends [24]

T. (Mepraia) spinolai

(2n = 20A + X₁X₂Y)

Chile, Metropolitan Region of Santiago, Colina. S.

33°11′53″S, 70°39′42″W

15%; 10 II with C-dots in both ends [25]