House Windowfly - Scenopinus fenestralis
A small, black fly with dull orange legs. The head has a semicircular outline with large eyes.
Scenopinus njger.
A quality photo is generally required.
The fly is most commonly encountered in houses around windows.
Adults may be found indoors from spring onwards, peaking around June to August.
Larvae of the fly are predators of carpet beetles and other household pests.
See also 'Further Information' link below
Widespread in the southern half of Britain, although it seems to be a decling species.
Uncommon or under-recorded in Leicestershire and Rutland. The Scalford record of 22 April 2019 is the first for our area since 1992.
Leicestershire & Rutland Map
Enter a town or village to see local records
MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020
UK Map
Species profile
- Common names
- House Windowfly
- Species group:
- Flies
- Kingdom:
- Order:
- Family:
- Records on NatureSpot:
- 1
- First record:
- 22/04/2019 (Lewis, Steven)
- Last record:
- 22/04/2019 (Lewis, Steven)
Total records by month
% of records within its species group
10km squares with records
The latest images and records displayed below include those awaiting verification checks so we cannot guarantee that every identification is correct. Once accepted, the record displays a green tick.
In the Latest Records section, click on the header to sort A-Z, and again to sort Z-A. Use the header boxes to filter the list.



