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

This small (c3mm) dull orange fly has dark-spotted wings, a grey abdomen and a thin triangle mark in the centre of the thorax. See ID checklist for more details. Provide details of how the specimen was identified and the key features observed (ideally with images). Reasonable common and widespread in England and Wales. Uncommonly recorded - probably more widespread than records suggest due to its similarity to O. germinationis . No additional images available for this species.
Wikipedia reference for Opomyza petrei: http://en.wikipedia.org/wiki/Opomyza_petrei.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Diptera (Flies)
- Superfamily
- Opomyzoidea
- Family
- Opomyzidae
- Genus
- Opomyza
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Grassland habitats.
Additional species information
Recorded status
Reasonable common and widespread in England and Wales.
About Flies: the wider group
Order-level background for Diptera, the group containing Opomyza petrei. 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.
FROM LOOKING IT UP TO GETTING TO KNOW IT
Make sense of the bugs at home.50 household bug profiles for you. Photos, coloring, and activities for curious kids.

