Mesopolobus aequus

Description

Length ~2mm. Antennae inserted low down, the lower edge of the toruli not or hardly above the level of the ventral edge of the eyes; antennal toruli to clypeal margin slightly shorter than it to middle ocellus; pronotum with collar slightly margined; marginal vein of forewing 2 to 2.25 times as long as the stigmal vein. Body green, antennae and legs mainly yellowish. Median area of propodeum shiny, at most weakly sculptured.

Identification difficulty
Recording advice

Unless identified by a recognized expert, explain how the specimen was identified and submit photos of key features. 

Habitat

A predator in grasses, feeding on the eggs and larvae of other insects. Females pass the winter amongst the foliage of coniferous trees. 

When to see it

All year. 

Life History

Egg parasitoid of Javesella pellucida.

UK Status

Widely distributed.

VC55 Status

Unknown.

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:
Pteromalidae
Records on NatureSpot:
1
First record:
10/03/2026 (Cann, Alan)
Last record:
10/03/2026 (Cann, Alan)

Total records by month

% of records within its species group

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