Species Account

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Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Fairly common and fairly widespread resident.

Local Record: Grade 1   See here for explanation

Flight time: One generation, Jul-Aug

Forewing: 10-13mm.

Foodplant: 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 recorded190519751905
Year last recorded201120082011
Number of records548781252
Number of individuals20571544422
Unique positions13112286
Unique locations10613238
Adult records497771148
Immature records000

For the region, we have a total of 1252 records from 238 sites. Earliest record on file is in 1905.


2342 Rosy Minor 03
© Julian Francis
2342 Rosy Minor 02
© Will Bown
2342 Rosy Minor 01
© Tom Morris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A common coastal species in Britain, less frequent inland, the larva feeding on the roots and stems of a wide variety of grasses including cock's-foot (Dactylis glomerata), lyme-grass (Leymus arenarius) and glaucous sedge (Carex flacca). In Dorset, the moth occurs in a variety of different habitats. It colonises unimproved grassland both on the coast, where it is common and on chalky soils inland where it is at low density. Singletons from a number of locations across the Poole Basin suggest limited colonisation of heathland or dispersal from the coast. Larvae have been found eating the flowers of stinking iris (Iris foetidissima) on the coast. In addition to the usual single brood between mid-July and mid-August, a number of June records indicate a partial first brood. The following moths were either second brood residents or, given the deep-source southerly airflow at the time, immigrants from western France or Iberia: Durlston, two at MV on 23 October 1996 (P Davey).

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