Gracillariidae: Gracillariinae

0287 (ABH15.009) Caloptilia robustella, Jäckh, 1972


 Photo © Barry Dickerson
 Photo © Barry Dickerson
 Photo © Barry Dickerson
 Photo © David Griffiths

General Information

This species is very similar to C. alchimiella but has a shorter and less clearly defined yellow blotch on the forewing. Genital dissection is necessary for a conclusive identification, although the first generation appear around three weeks before C. alchimiella.


The larvae create a short gallery mine which later becomes a blotch. They then form up to three cones at the edge of the leaf.

Wingspan: 10-13mm
Foodplant(s): oaks (Quercus spp.), Beech (Fagus sylvatica), Sweet Chestnut (Castanea sativa)
Flying: Two generations, April-June and July-September
UK Presence: Resident
National status: Common


Woodland, heathland and scrub.

Regional Information

Recorded in 51 (18.9%) of the 270 2km squares of Huntingdonshire.

Last recorded in August 2023

Recorded date range (Adult): 11 April to 24 October

Recorded date range (Larva/Leafmine): 21 February to 23 October

Similar Species
Storrington, West Sussex, 30th May 2017. MV trap.
Storrington, West Sussex, 30th May 2017. MV trap.
 Photo © Nick Greatorex-Davies