Species Account

Select species and region:



Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Common and fairly widespread resident.

Local Record: Grade 2   See here for explanation

Flight time: One generation, May-Jul.

Forewing: 15-17mm.

Foodplant: Herbaceous plants.

IMPORTANT - Please note that the maps and accounts are provisional, subject to change and further update.  The whole dataset still needs to go through the final verification process and it is likely that a very small number of records will not satisfy the present requirements and there are other records that have not been formally submitted.  The information is for guidance only.

Record breakdown:

Year first recorded195519731955
Year last recorded201120112011
Number of records27263366124
Number of individuals12437176828410
Unique positions25019538
Unique locations19717428
Adult records25433345754
Immature records000

For the region, we have a total of 6124 records from 428 sites. Earliest record on file is in 1955.


2380 Treble Lines 06
© Julian Francis
2380 Treble Lines 05
© Julian Francis
2380 Treble Lines 04 ab. obscura
© Julian Francis
2380 Treble Lines 03
© Julian Francis
2380 Treble Lines 02
© Paul Harris
2380 Treble Lines 01
© Tom Morris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A widespread species in southern Britain, but absent from Scotland, the larva feeding nocturnally on various herbaceous plants. In Dorset, the moth is widespread, ranging from locally abundant on unimproved grassland and in open woodland, to frequent elsewhere. Of the five hundred and twenty two examples trapped at Arne between 1993 and 1995, 95% were of the typical form, and 5% referred to the melanistic form, ab. bilinea. The following singleton in a warmer than usual summer is likely to have been a second generation individual: Matchams, at MV on 31 August 1983 (G Le Pard).

See background to species accounts.  Index of Vernacular names - Search - Random Species