Cuterebra americana

North America; documented in Florida, U.S.A.

• Neotoma spp. (woodrats) - primary hosttypical hosts; inferred from common name and genus-level patterns
• Rattus rattus (black rat) - atypical hostdocumented case of successful development in Florida, representing host range expansion

Eggs are deposited near host burrow entrances. First instar larvae hatch in response to host body heat, enter the host through natural orifices or skin breaks, and migrate to subcutaneous locations. Larvae create warbles (cyst-like structures with respiratory openings) and feed on host fluids for approximately one month, molting through three instars. Mature third instar larvae exit the host, burrow into soil, and pupate. Adults emerge from puparia, do not feed, and are short-lived.

Adults are rarely observed in nature. They are non-feeding with reduced mouthparts, focusing entirely on reproduction. Eggs are laid in host habitat rather than directly on hosts.

Parasite of small mammals; population-level impacts on typical hosts appear limited based on studies of congeneric species

No direct medical significance; not known to parasitize humans. Documented case of host switching to an introduced rodent (Rattus rattus) raises ecological monitoring considerations.

• Cuterebra fontinellaAlso a rodent bot fly, but specific to different host species (white-footed mice, Peromyscus leucopus)
• Cuterebra buccata / C. abdominalisRabbit and lagomorph bot flies; adults distinguished by red bands in eyes and different host associations

• bot fly
• parasite
• myiasis
• rodent parasite
• Cuterebrinae
• Oestridae
• Diptera

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Oestridae | Beetles In The Bush
• Newly emerged rabbit bot fly | Beetles In The Bush
• Discovery and Successful Development ofCuterebra americana(Diptera: Oestridae) from an Atypical Host,Rattus rattus(Rodentia: Muridae), in Florida, U.S.A.