Neoascia tenur


Wing length 3 to 5 mm. This tiny species is similar to N. geniculata but in the male the third antennal segment is relatively narrow, and about one and a half times as long as broad. The female of this species has less waisted lateral margins to tergite two than in N. geniculata. The male has a yellow band on the abdomen on tergite three, whilst the female may be all black or have various spots and bars on tergites two and three.

Similar Species

Neoascia geniculata

Identification difficulty

Marshes and fens, especially by the edges of standing water.

When to see it

April to November peaking in July.

UK Status

Widespread and fairly common in Britain.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map

Species profile

Species group:
Records on NatureSpot:
First record:
24/04/2012 (Skevington, Mark)
Last record:
03/06/2016 (Ruddoch, Paul)

Total records by month

% of records within its species group

10km squares with records

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