Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Fannia pusio
mosca, Chicken dung fly
Associated with humans, breeding in various decaying vegetable and animal matter, especially rotting meat (Pont 1977).
Domain
Eukaryota
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Diptera
Suborder
Brachycera
Family
Fanniidae
Genus
Fannia
Species
pusio
Taxon category: Accepted
Origin: Introduced - established
Year of first record: 1932
Mode of introduction: Accidental
Introduction Pathway: Contaminant
Subpathway: On habitat material (soil, vegetation)
Introduced status: Naturalized
Invasive status: Unlikely to become invasive
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: New World; Bartholome, Floreana, Isabela, San Cristóbal, Santa Cruz, Santa Fé, Santiago, Wolf.
- Peck, S.B. (1996) Origin and development of an insect fauna on a remote archipelago: The Galápagos Islands, Ecuador. In: Keast A., Miller S.E. (eds.): The origin and evolution of Pacific Island biotas, New Guinea to eastern Polynesia: patterns and processes. SPB Academic Publishing, Amsterdam, The Netherlands, p. 91-122.
- Peck, S.B. Heraty, J., Landry, B. & Sinclair, B.J. (1998) Introduced insect fauna of an oceanic archipelago: The Galápagos Islands, Ecuador. Am. Entomol. 44: 218-237.
- Sinclair, B. J. (2023) An annotated checklist of the Diptera of the Galápagos Archipelago (Ecuador). Zootaxa, 5283, 1-102
- Sinclair, B.J. Peck, S.B. (2005) An annotated checklist of the Diptera of the Galápagos Archipelago (Ecuador). Charles Darwin Research Station, unpublished, 64 pp.
You are welcome to download and use the information found in this page, acknowledging its source.
This page should be cited as follows:
"Galapagos Species Database, Fannia pusio", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=12404. Accessed 2 November 2026.