Species Account

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Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Probably common, but unknown due vast majority undetermined.

Local Record: Grade G   See here for explanation

Flight time: One generation, May-Aug.

Forewing: 17-20mm.

Foodplant: Broadleaved trees and shrubs.

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 recorded190519851905
Year last recorded201120082011
Number of records1392632910
Number of individuals19421014086
Unique positions15816348
Unique locations13014288
Adult records1301622726
Immature records11124

For the region, we have a total of 2910 records from 288 sites. Earliest record on file is in 1905.


2284 Grey Dagger 04
© Will Bown
2284 Grey Dagger 03 larva
© Will Bown
2284 Grey Dagger 02 larva
© Jenny Seawright
2284 Dagger agg. 01
© Tom Morris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A widespread and often common species in Britain, the larva is polyphagous on deciduous trees and shrubs. In Dorset, the species is likely to be widespread and common with no ecological preference. The phenology chart uses all data for the two Daggers. Two-brood cycles are evident, the main univoltine cycle in July plus a partial bivoltine cycle in May and in August. The national norm is for a single brood in northern Britain and a double brood in the south. An extreme aberration was found at Lodmoor by C Day on 28 June 1932.

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