Chaetorellia jaceae
This record describes Chaetorellia jaceae (species). Recorded family: Tephritidae. Recorded order: Diptera.
Identification and Appearance

Length about 4 mm. Strongly patterned wings with three brownish strips. Please provide supporting images with your records for this species. Meadows, verges and other grassy places, especially where Knapweed is present. Larvae live within the seed heads of Knapweed species. Fairly widespread in England though rather local.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Diptera
- Family
- Tephritidae
- Genus
- Chaetorellia
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Meadows, verges and other grassy places, especially where Knapweed is present.
Seasonal Activity
Summer.
Diet and Behavior
Life History
Larvae live within the seed heads of Knapweed species.
Additional species information
Recorded status
Fairly widespread in England though rather local.
About Flies: the wider group
Order-level background for Diptera, the group containing Chaetorellia jaceae. 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 Chaetorellia jaceae (9)
Frequently Asked Questions About Chaetorellia jaceae
What is Chaetorellia jaceae?
Chaetorellia jaceae is a species in the family Tephritidae, within the order Diptera.
How big is Chaetorellia jaceae?
about 4 mm. Strongly patterned wings with three brownish strips.
Where is Chaetorellia jaceae found?
Habitat: Meadows, verges and other grassy places, especially where Knapweed is present.
When is Chaetorellia jaceae active?
Chaetorellia jaceae: seasonal activity - Summer..
What is the life cycle of a Chaetorellia jaceae?
Larvae live within the seed heads of Knapweed species.
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