Andricus callidoma

Description

The larvae of the gall wasp Andricus callidoma cause galls to form on Oak.

The asexual gall emerges from an unopened bud. The stalk is 3 to 5 mm long and can be much longer, the gall itself is approximately 2 x 4 mm with a pointed tip.

The sexual gall is on oak catkins, and forms a ball c.5mm wide of white cottonwool-like hairs.

Similar Species

Andricus malpighii casuses very similar asexual galls, and the adults may need to be bred from the gall to identify.

Identification difficulty

Gall  Adult

Habitat

Where Oak (the host species) is present.

When to see it

May to September.

UK Status

Uncommon and little recorded in Britain.

VC55 Status

Uncommon in Leicestershire and Rutland.

Leicestershire & Rutland Map

MAP KEY:

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

UK Map

Species profile

Species group:
Bees, Wasps, Ants
Kingdom:
Animalia
Order:
Hymenoptera
Family:
Cynipidae
Records on NatureSpot:
3
First record:
04/09/2016 (Grimes, Martin)
Last record:
09/09/2018 (Bennett, Simon)

Total records by month

% of records within its species group

10km squares with records

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