It is a medium- to large-sized dipteran insect with a robust appearance and distinctly thickened legs, a characteristic feature reflected in its specific name. The body is compact, with large, well-developed eyes typical of horse flies, allowing efficient visual detection. Overall coloration is generally brownish to dark, sometimes with lighter tones on the abdomen or legs, providing effective camouflage.
Geographic distribution: It occurs in South America, mainly in tropical and subtropical regions. Its distribution is closely linked to areas with wet soils, water bodies, and abundant wildlife, which are essential for completing its life cycle.
Habitat: It primarily inhabits forests, savannas, grasslands, and riparian zones, where humidity levels are high. Adults are commonly observed in open areas or along vegetation edges, especially during warm seasons when activity peaks.
Feeding: As in other members of its family, females are hematophagous, feeding on the blood of vertebrates, including birds and mammals, a crucial requirement for egg development. Males feed mainly on nectar and plant fluids, occasionally contributing to pollination.
Behavior: This species shows mainly diurnal activity, with fast and direct flight. Females can be persistent when seeking hosts, relying on visual and chemical cues. Adults often rest on low vegetation or exposed surfaces, from which they launch short, targeted flights.
Reproduction: Reproduction is associated with humid environments, where females lay eggs on wet soil or near water bodies. The larvae are free-living and develop within the substrate, acting as predators of small invertebrates, passing through several stages before pupation and adult emergence.
Conservation status: It has not been formally assessed under a global conservation category. Nonetheless, local populations may be negatively impacted by habitat loss, wetland drainage, and intensive pesticide use.
Autor de esta compilación: EcoRegistros – 16/12/2025