Noctuidae: Acronictinae

08777 Grey Dagger Acronicta psi, (Linnaeus, 1758)

BF2284 (ABH73.038)

Ex. larva, Christophstal, August 2016
Ex. larva, Christophstal, August 2016
 Photo © Peter Bissell
Ex. larva, Christophstal, August 2016
 Photo © Peter Bissell
 2012-2013
 2014
 2015
 2016-onwards
Final instar, from hazel, Christophstal, July 2016
Final instar, from hazel, Christophstal, July 2016
 Photo © Peter Bissell
2nd instar, Christophstal, July 2013
2nd instar, Christophstal, July 2013
 Photo © Peter Bissell


General Information

This species cannot be readily distinguished as an adult from the Dark Dagger, A. tridens, except by examination of the genitalia. The larvae are, however, quite different.

 

Pupates in a crevice in tree bark.

Overwinters as a pupa.
Both sexes come to light.

Forewing length: 17-20mm.
Foodplant(s): Blackthorn (Prunus spinosa), hawthorns (Crataegus spp.), Apple (Malus domestica), birches (Betula spp.), lime (Tilia spp.), elms (Ulmus spp.), Rowan (Sorbus aucuparia), broadleaved trees, broadleaved shrubs
Flying: One/two generations, mid May-August and September-October
UK Presence: Resident
National status: Not endangered

Habitat

Woodland, fens and gardens.

Regional Information

Recorded in 1 (0.4%) of the 270 2km squares of Baden-Württemberg.

Last recorded in July 2016

Recorded date range (Larva/Leafmine): 13 July to 17 July



Larva/Leafmine:
Larva Type:
With lumps, bumps or horn(s)
Colours:
yellow, black, red, white
No. of Proleg Pairs:
5