Hydropsyche siltalai


Length 10 to 12 mm. The adults are rather plain, largely grey or brown with paler mottling. Full identification of the Hydropsyche species requires analysis of the genitalia. Where the subject of an image has not received genitalia examination, which is necessary to be certain of accuracy in this species, it is highlighted with a red box. For that reason it is only claimed as likely to be this species.


Similar Species

Hydropsyche instabilis.

Identification difficulty

Streams and Rivers.

When to see it

June to September.

Life History

They are members of the net-spinning group, so called because the aquatic larvae spin cup-like nets to catch small organisms and debris to eat.

UK Status

Common and widespread throughout Britain.

VC55 Status

Common 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:
20/07/2007 (Nicholls, David)
Last record:
03/07/2023 (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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