Bug FAQCylindromyia interrupta
Cylindromyia interrupta · Order: Diptera · Family: Tachinidae
Cylindromyia interrupta is a slender tachinid fly about 6 to 8 mm long with a 12 mm wingspan; its thorax is black, the abdomen reddish with two silver rings, a wide black stripe and black tip, and it has bright white calypters. It lives in hedge rows and dry meadows across most of Europe, Russia and parts of North America from Alaska to California and several US states. Adults feed on nectar and pollen of Apiaceae plants such as common daisy and are active from May through August.
Source: Wikipedia
How to recognize it
Bright white calypters are noticeable on the wings.
Source: Wikipedia
Size
The fly reaches 6 to 8 mm in length and has a wingspan of about 12 mm. Its body is slender.
Source: Wikipedia
Where it lives
It inhabits hedge rows and dry meadow environments.
Source: Wikipedia
Life cycle
The larvae develop inside a living host.
Source: Wikipedia
When you see it
Adults can be seen from May to August.
Source: Wikipedia
Where it comes from
It is found throughout most of Europe and Russia. In North America it occurs from Alaska down to California and in states such as North Dakota, Colorado and New Jersey.
Source: Wikipedia
Where it is found in the US
Recorded in 17 of 51 states and DC. Most records: Montana, Massachusetts, Washington, California, Pennsylvania, Illinois, Maine, Ohio.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When are adult Cylindromyia interrupta flies active?
Adults are present from May through August.
Source: Wikipedia
What do adult Cylindromyia interrupta flies eat?
They feed on nectar and pollen of Apiaceae plants, especially common daisy.
Source: Wikipedia
Where can I find Cylindromyia interrupta?
They live in hedge rows and dry meadows across Europe, Russia and parts of North America.
Source: Wikipedia
Same family (Tachinidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Cylindromyia_interrupta
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.