Dolerus cothurnatus

Alternative names
Dolerus junci
Description

Female 8-9mm. Male 7-8mm. Abdomen mostly red with a dark tip. Legs with some red. The mesonotum is black with prominent punctures on the mesopleura (see image). Males have long and sturdy antennae.

Identification difficulty
Habitat

Where the larval foodplants of Water Horsetail and Marsh Horsetail are found.

When to see it

May - July

UK Status

Widespread but uncommon.

VC55 Status

Rare

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 - hymenopteran
Kingdom:
Animalia
Order:
Hymenoptera
Family:
Tenthredinidae
Records on NatureSpot:
1
First record:
29/04/2025 (Nicholls, David)
Last record:
29/04/2025 (Nicholls, David)

Total records by month

% of records within its species group

10km squares with records

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