Helophilus trivittatus
This record describes Helophilus trivittatus (species). Recorded family: Syrphidae. Recorded order: Diptera.
Identification and Appearance
This species is slightly larger and longer in build than other members of the genus, and the yellow side patches on the abdomen are more pronounced often giving a more lemony appearance. A particularly good identification feature is the fact that the face of Helophilus trivittatus is entirely pale yellow including the central stripe. Helophilus pendulus, H. trivittatus and H. hybridus are all very similar. See Identification Aids below for help on separating these three species. It is often seen around thistles and umbellifers such as Hogweed. It seems to prefer drier areas than other members of the genus, and is often recorded in coastal locations. The species is widespread in England and Wales, less so in Scotland. It is never common in any of these areas.
Classification
Habitat and Range
Habitat
It is often seen around thistles and umbellifers such as Hogweed. It seems to prefer drier areas than other members of the genus, and is often recorded in coastal locations.
Seasonal Activity
May to October peaking in August.
Diet and Behavior
Life History
A strong flyer and common migrant.
Additional species information
Recorded status
The species is widespread in England and Wales, less so in Scotland. It is never common in any of these areas.
About Flies: the wider group
Order-level background for Diptera, the group containing Helophilus trivittatus. 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.
Frequently Asked Questions About Helophilus trivittatus
What is Helophilus trivittatus?
Helophilus trivittatus is a species in the family Syrphidae, within the order Diptera.
How do you identify Helophilus trivittatus?
Aids below for help on separating these three species.
Where is Helophilus trivittatus found?
Habitat: It is often seen around thistles and umbellifers such as Hogweed. It seems to prefer drier areas than other members of the genus, and is often recorded in coastal locations.
When is Helophilus trivittatus active?
Helophilus trivittatus: seasonal activity - May to October peaking in August..
What is the life cycle of a Helophilus trivittatus?
A strong flyer and common migrant.