Geomyza tripunctata
This record describes Geomyza tripunctata (species). Recorded family: Opomyzidae. Recorded order: Diptera.
Identification and Appearance

A small fly with very distinctive patterning on the wings, though this is similar to other Geomyza species. The abdomen colour is varied, from red-brown to black. Peaking in summer, but may be seen in most months of the year. Larvae tunnel in the stems of grass plants and can be a pest of cereal crops. Widespread and fairly frequent in Britain.
Wikipedia reference for Geomyza tripunctata: http://en.wikipedia.org/wiki/Geomyza_tripunctata.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Diptera (Flies)
- Superfamily
- Opomyzoidea
- Family
- Opomyzidae
- Genus
- Geomyza
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Found in grassland and cereal fields.
Seasonal Activity
Peaking in summer, but may be seen in most months of the year.
Diet and Behavior
Life History
Larvae tunnel in the stems of grass plants and can be a pest of cereal crops.
Additional species information
Recorded status
Widespread and fairly frequent in Britain.
About Flies: the wider group
Order-level background for Diptera, the group containing Geomyza tripunctata. Species-specific details appear above.
Group overview
Diptera includes over 150,000 described species of flies, mosquitoes, and midges. Mosquitoes are the deadliest animal on Earth (CDC). Malaria alone causes ~249 million cases and over 608,000 deaths annually, mostly children under 5 (WHO). Vector-borne diseases account for over 17% of all infectious diseases, causing 700,000+ deaths per year.
Ecological role of the group
Despite their disease impact, flies are critical decomposers and pollinators. Hoverflies alone pollinate hundreds of crop and wildflower species. Flies are also the primary food source for many birds, bats, and fish. Forensic entomology relies heavily on fly species for crime scene analysis.
Economic and practical significance of the group
In the U.S., vector-borne disease cases tripled between 2004-2016, with over 640,000 cases reported in that period (CDC). Tickborne diseases doubled from 22,000 to 48,000 annual reports. Globally, mosquito-borne diseases cost billions in healthcare and lost productivity.
Recorded sources for this group: WHO, CDC, PNAS. Imported estimates may describe particular regions or reporting periods.
Photos of Geomyza tripunctata (3)
Frequently Asked Questions About Geomyza tripunctata
What is Geomyza tripunctata?
Geomyza tripunctata is a species in the family Opomyzidae, within the order Diptera.
Where is Geomyza tripunctata found?
Habitat: Found in grassland and cereal fields.
When is Geomyza tripunctata active?
Geomyza tripunctata: seasonal activity - Peaking in summer, but may be seen in most months of the year..
What is the life cycle of a Geomyza tripunctata?
Larvae tunnel in the stems of grass plants and can be a pest of cereal crops.
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