Notonecta viridis


Length 13 to 15 mm. Distinguished by the front of the pronotum, which has pointed angles that extend partly around the eye.

Similar Species

There are four UK Notonecta species and whilst they look broadly similar they can all be separated in the field from the different elytral markings. See ID Aids below.

N. glauca is most likely to be confused with N. viridis. Both have pale wing coverings (these are darker in the other two species). The front corners of the N. viridis pronotum are pointed and they extend partly under the eye. The front pronotum corners are more or less square in N. glauca.

Identification difficulty
Identification aids


Recording advice

A good photo of the dorsal surface is needed and ideally a side view showing the front corner of the pronotum. Alternatively the specimen needs to have been examined and the ID method described.


Often in brackish water but extending its range into silty bottomed freshwater pools.

When to see it

This species has been recorded in most months of the year.

UK Status

Widespread in England and Wales with few records from the far north.

VC55 Status

Status in Leicestershire and Rutland not known.

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:
19/04/2018 (Nicholls, David)
Last record:
17/04/2023 (Cann, Alan)

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.

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