Lesser Treble-bar – Geometridae – Larentiinae – Aplocera efformat – colour code •
STATUS – Last recorded 8/8/2024 – Cromford – A resident species that has become locally scarce, with most records coming from the central Derwent Valley. Once a well distributed and locally common species in Derbyshire. A recent colonist in the county with the first record in 1970. Very few records.
ID POINTERS – Very similar to Treble-bar but slightly smaller and the cross bands are usually paler and less intense.The angle of the basal cross band is usually acute, thin and sharp but can be 90° so other features need to be considered.
The most reliable identification feature, is to look at the tip of the abdomen. In Lesser Treble-bar it is rounded and square. In Treble-bar it is pointed. (Confusion species -Treble-bar).
FLIGHT PERIOD – On the wing – May – June and Late July – September.
IMAGES – Melbourne 2024 – Tony Davison© / Cromford 2024 – Image by Clive Ashton© /Darley Dale, Derbyshire – Image by Simon Roddis©
Lesser Treble-bar showing blunt abdominal tip 20th September 2024 - Tony Davison©
Lesser Treble-bar - 20th September 2024 - Melbourne - Tony Davison©
Lesser Treble-bar - 20th September 2024 - Melbourne - Tony Davison©
Lesser Treble-bar - 20th September 2024 - Melbourne - Tony Davison©
Lesser Treble Bar - Darley Dale - Simon Roddis©
