Helina evecta
This record describes Helina evecta (species). Recorded family: Muscidae. Recorded order: Diptera.
Identification and Appearance
This is a common muscid fly with a pale brown or blue abdomen with dark spots. It has infuscated cross-veins on its wings. It requires microscopic examination to be certain of identification. One identifying feature is the presence of long, dark hairs on the lateral margins of the scutellum and also the length and density of hairs on the hind femora (see ID Aids). It cannot be reliably separated from H. annosa without detailed examination - see ID Aids below. It cannot be reliably separated from H. annosa without detailed examination. The setae on the underside of the hind femur are a key feature. In H. evecta these are restricted to the apical third and long (more than the width of the femur). In H. annosa they extend along the length of the femur and are shorter (up to the width of the femur). Larvae are found in humus soil and moss. Common and widespread in England and Wales, fewer records from Scotland.
Wikipedia reference for Helina evecta: https://en.wikipedia.org/wiki/Helina_evecta.
Classification
Habitat and Range
Habitat
Various.
Diet and Behavior
Life History
Larvae are found in humus soil and moss.
Additional species information
Recorded status
Common and widespread in England and Wales, fewer records from Scotland.
About Flies: the wider group
Order-level background for Diptera, the group containing Helina evecta. 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 Helina evecta (4)
Frequently Asked Questions About Helina evecta
What is Helina evecta?
Helina evecta is a species in the family Muscidae, within the order Diptera.
How big is Helina evecta?
and density of hairs on the hind femora (see ID Aids).
Where is Helina evecta found?
Habitat: Various.
What is the life cycle of a Helina evecta?
Larvae are found in humus soil and moss.