Temporal Variations of Fluctuating Asymmetry in Wing Size and Shape of Triatoma Infestans Populations From Northwest Argentina Infect Genet Evol. Tri­atoma in­fes­tans are rel­a­tively large in­sects, about 35mm (3.5cm) in length. Triatoma sanguisuga; Triatomines are mostly active at night and feed on the blood of mammals (including humans), birds, and reptiles. 2017 Dec 6;11(12):e0006097. eCollection 2017 Dec. A third pair of legs act like arms that are attached to the trapezoidal thorax near its protruding bulbous eyes. Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina. Triatomine bugs live in a wide range of environmental settings, generally within close proximity to an animal the bug can feed on, called a blood host. 2017 Dec;56:133-142. doi: 10.1016/j.meegid.2017.11.012. doi: 10.1371/journal.pntd.0006097.

It is about one inch (2.5 cm) long, has two pairs of long, bent legs attached to an oval-shaped abdomen. Their bod­ies are di­vided into three major seg­ments: head, tho­rax, and ab­domen. This vector species occupies a wide variety of (peri)domestic habitats in this region [31–33]. Triatoma infestansis a nocturnal predator that blood feeds on mammals while they are asleep. The area where Triatoma infestans was the most important vector of Trypanosoma cruzi in the Southern Cone of South America was reduced by well over 90%, and Rhodnius prolixus has been eliminated from Central America, among other successful results. The mouth­parts are adapted for pierc­ing and suck­ing. 1. PLoS Negl Trop Dis.

The head is quite elon­gate and at­tached to the tho­rax via a nar­row neck. Triatoma infestans from human sleeping quarters (domestic habitats or domiciles) mainly blood-feeds on humans, dogs, chickens and cats every 3–4 days over the austral spring-summer period in rural villages of the Argentine Chaco [27–30].