Woodrat-associate
Guides
Planolinoides neotomae
A small dung beetle in the family Scarabaeidae, subfamily Aphodiinae. The species epithet "neotomae" indicates an association with woodrats (genus Neotoma), suggesting a specialized ecological relationship with these rodents. The species is known from western North America and Mexico.
Triatoma gerstaeckeri
kissing bug, blood-sucking conenose
Triatoma gerstaeckeri is a triatomine bug (subfamily Triatominae) and a documented vector of Trypanosoma cruzi, the protozoan parasite causing Chagas disease. Adults measure 20–30 mm in length. The species occurs from the southwestern United States (New Mexico, Texas) through northeastern Mexico, occupying dry scrubland habitats with strong associations to woodrat (Neotoma) nests. It exhibits paurometabolous development with five nymphal instars before adulthood. The species is notable for its relatively high T. cruzi infection rates in some populations and its propensity for peridomestic occurrence near human habitation.
Triatoma protracta
western bloodsucking conenose
Triatoma protracta is a blood-feeding assassin bug in the subfamily Triatominae, commonly known as the western bloodsucking conenose. Native to western North America, it serves as a vector of Trypanosoma cruzi, the protozoan causing Chagas disease, though its vector efficiency is considered secondary to some congeners due to its relatively long development time and defecation behavior. The species is primarily associated with woodrat (Neotoma) nests and occasionally invades human dwellings, where it may bite and cause allergic reactions. Laboratory studies indicate egg-to-adult development averages 6.7 months with 72.5% egg eclosion rates.
Triatoma rubida
kissing bug, Arizona kissing bug
Triatoma rubida is a hematophagous assassin bug and important potential vector of Chagas disease in the southwestern United States and northern Mexico. Laboratory studies demonstrate it has the shortest egg-to-adult development time (~4 months) among comparable species, with high survival rates and rapid defecation behavior that enhances vector competence. In southern Arizona, the species is primarily associated with white-throated woodrat (Neotoma albigula) nests, with dispersal flights occurring from late May through mid-July when adults may be attracted to artificial lights and invade human dwellings. Females consistently defecate while feeding (93%), unlike males and immature stages, increasing transmission risk. The species shows 41.5-66% prevalence of Trypanosoma cruzi infection in some populations and has been documented feeding on humans.