Seven species from the neartic region, Triatoma barberi Usinger, 1939; T. rubida (Uhler, 1894); T. gerstaeckeri (Stal, 1859); T. lecticularia (Stal, 1859); T. protracta (Uhler, 1894); T. recurva (Stal, 1868) and T. sanguisuga (Leconte, 1855) were comparatively analysed with emphasis on the genital structures of the male bug: the phallosome (Ph), the phallosome struts (SPh), the endosoma process (PrEn), the vesica (V) and the articulatory apparatus (Apb). The phallic structures were useful as a supplementary morphological criterion to the present taxonomical standards. These wild species are found naturally infected by Trypanosoma cruzi in the United States and Mexico. Some of them live outside human dwellings while other are occasionally domiciliary, although they do not colonize these homes.
Triatomines from nearctic region; male extern genitalia