Langmaid’s Yellow Underwing (Noctua janthina)

Langmaid's Yellow Underwing - Ian Hodgson

Langmaid’s Yellow Underwing – Ian Hodgson

Langmaid’s Yellow Underwing (Noctua janthina) (2110a, 73.347) is very similar to Lesser Broad-bordered Yellow Underwing which may have led to under reporting of this species.

It was only recognised as a distinct species in 1991 and was first confirmed in the British Isles in 2001.  Records in Kent began in 2003. And have continued in low numbers since.  The peak count was of 106 in 2011 (see graph below).

As can be seen from the distribution graph the majority of the records have been from coastal areas, although there have been a significant number of inland records. There are only 48 records from West Kent, 42 of which were in 2006.

The flight period is typically two weeks earlier than for Lesser Broad-bordered Yellow Underwing and inspection of the under hindwing is essential for identification.

Earliest and latest dates recorded:

East Kent VC 15 West Kent VC 16
Earliest date 24 June 2 July
Latest date 18 September 3 September