Species Account

Select species and region:



Summary Data

Season (Adult / Immature):

National Status: Local

Local Status: Uncommon and thinly distributed resident.

Local Record: Grade 2   See here for explanation

Flight time: One generation, Jun-Aug.

Forewing: 14-17mm.

Foodplant: Woodland grasses.

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 recorded1947200719821947
Year last recorded2011200720112011
Number of records232128522
Number of individuals346433766
Unique positions11315238
Unique locations9215196
Adult records203128464
Immature records0000

For the region, we have a total of 522 records from 196 sites. Earliest record on file is in 1947.


2335 Slender Brindle 03
© Julian Francis
2335 Slender Brindle 02
© Gillian Nash, July 2015
2335 Slender Brindle 01
© Paul Harris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A local species in southern Britain, the larva feeding inside the stems and then nocturnally on the blades and flowers of various woodland grass species. In Dorset, the moth is local and at low density in old woodland on sandy and chalky soil where false brome (Brachypodium sylvaticum) and wood meadow-grass (Poa nemoralis) grow. In Oakers Wood and Powerstock Common, good stocks of wood-rush (Luzula spp.) may account for the relatively high numbers of moths trapped there. It is also common very locally in old woodland on chalky soil in the north-east of the county where wood melick (Melica uniflora) and wood millet (Milium effusum) grow alongside false brome and wood meadow-grass.

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