marg's picture


Observed: 5th September 2013 By: margmarg’s reputation in Invertebratesmarg’s reputation in Invertebratesmarg’s reputation in Invertebrates
Species interactions

No interactions present.

Species with which Lesser Treble-Bar (Aplocera efformata) interacts


Ardea's picture

Colin, before I agree I take

Colin, before I agree I take it you've looked at the shape of its backside

Wildlife Ranger's picture


Hi Brian

A good ID point - Difficult to tell apart from the less common Lesser Treble-bar (A. efformata), which has more angled inner cross-line on the forewing.

As you correctly suggest given the available image angled not on a plane

Treble-bar has elongated, pointed claspers giving rise to a narrow abdomen tip. Lesser Treble-bar has a blunter tip to the abdomen with rather shorter, curved claspers

I dont think given the angle you could conclude on this however in so far as both species go from experience I'd suggest the Lesser


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DD's picture

If there is no reference to

If there is no reference to abdomen then perhaps we should start identifying these two as 'Treble/Lesser Treble-bar' which would avoid having this debate every time one of them crops up.


Ardea's picture

Donald, it only works for

Donald, it only works for males. There are diagrams in Waring and Townsend, Moth of Great Britain and Ireland p 125. I hope this helps.

DD's picture

Thanks Brian

but with a little care and practice it works perfectly well with females too. See the comparison photos on UKmoths website.