Cauchas fibulella
Adela (Cauchas) fibulella - 13th County Record
At Hexton the other day I was very lucky to find quite a scarce moth for Hertfordshire.
Adela (Cauchas) fibulella is a moth of the Adelidae family and is pretty minute to say the least. It is probably one of the least commonest from the family.
The moth feeds on Germander Speedwell which in itself is a common weed in most places. The first moth I observed was flying gently above its food plant settling intermittently during warm sunny spells.
I didn't just find one, once you got your eye in there were quite a few around the bottom end of the reserve but upon walking into the adjacent set-aside field I found even more Germander Speedwell and it was more common here with a count of 25 in total, a fantastic result!
Other moths of note included a few more Small Purple-barred (an even scarcer moth),15+ Glyphipterix simpliciella's, 5 Pyrausta nigrata, 8 Burnet Companions, 2 Mother Shiptons, 1 Grapholita compositella, 1 Grass Rivulet.
Other expected moths that I disturbed during the day are below
1x Silver-ground Carpet
10+ Celypha lacunana
5x Anthophila fabriciana
1x Marbled White Spot
1x Green Carpet
1x Grey Pug
1x Epiblema sp
1x Psyche casta
Needless to say after finding the moth in profusion at Hexton, I will be searching elsewhere for other large patches of the foodplant.