Passenger, caught 23/9/2006 (National moth night).

Mothing at St Margaret's

Most of the Moth lists and Photographs are from my garden (TR359450) in the village of St Margaret's at Cliffe in Kent. It is situated about 1Km from the sea and has farmland with in 100 metres. The garden is well shrubbed and about 1600 sq metres. I normally run a 125 MV lamp and a 15W actinic light over-night and once the season gets going a couple of other traps. At the moment both are 25W black Lamps. previously I used a 160W blended lamp in one of them. All traps are home made. Trapping dates refer to the date the trap was put out.
I try and identify all the Macro Moths, with the micros I am not at all systematic, I do more than I used to with the help of the new book, but there are some that do get through.


Thursday, 4 August 2011

Langmaid's and Lesser Broad-bordered Yellow Underwings

Using the criteria published about the hindwing and the "fingers" on the underside of the forewing of this pair it is necessary to handle the moths and open the wings. There are some obvious differences without such intrusive handling. I'm not putting forward an opinion as to whether Janthina is a valid species, but just some morphological differences between to two "types" I catch.

Langmaid's Yellow Underwing, Noctua janthina, (right) compared to Lesser Broad-bordered Yellow Underwing, Noctua janthe. It is short and stubbier and duller. This is typical of all of those I've caught.

Looking through a perspex pot the underwing of the Langmaid's Yellow Underwing is dark and dull, especially the outside corners.

The Lesser Broad-bordered Yellow Underwing is much brighter and clearer. I did confirm that both of these also conformed to the other morphological differences.

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