Norellisoma opacum

Description

Up to 5mm with a densely dusted grey thorax and abdomen, except for the final abdominal segment (terminalia) that is glossy black.  The legs, the front of the frons and the antennae are orange. The arista are pubescent. 

Similar Species

N. spinimanum is larger (~6.5mm) and is less dusted so that the shiny black tergites show through.

Identification difficulty
Recording advice

Detailed photos required.

Habitat

Wetlands, damp meadows and along margins of rivers, canals, reservoirs, etc. 

Life History

The larvae develop in the petioles of Meadowsweet. 

UK Status

Widespread but scarce. 

VC55 Status

Uncommon. 

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Species group:
insect - true fly (Diptera)
Kingdom:
Animalia
Order:
Diptera
Family:
Scathophagidae
Records on NatureSpot:
1
First record:
11/05/2023 (Nicholls, David)
Last record:
11/05/2023 (Nicholls, David)

Total records by month

% of records within its species group

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