Horse Fly

Natural Habitat

Found in various habitats, especially near water sources like ponds, lakes, and marshes, as well as woodlands and pastures where host animals are present.

Diet & Feeding

Adult female horse flies feed on blood from mammals, including humans, horses, cattle, and other livestock. Males primarily feed on nectar and plant sap.

Behavior Patterns

Flies actively during the day, often seen hovering or rapidly darting. Males establish territories and patrol for females. They are excellent fliers.

Risks & Benefits

Risks: Female horse flies deliver painful bites to obtain blood meals, which can cause discomfort, swelling, and allergic reactions. They are also known vectors for diseases such as anaplasmosis, tularemia, and trypanosomiasis, affecting livestock and humans. Benefits: Larvae can be predators of small invertebrates in aquatic or semi-aquatic environments.

Identified on: 8/8/2025