Noctuidae: Acronictinae

08776 Dark Dagger Acronicta tridens, ([Denis & Schiffermüller], 1775)

BF2283 (ABH73.037)


General Information

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


Pupates in a crevice in tree bark.

Overwinters as Overwinters as a pupa.
Both sexes come to light.

Forewing length: 17-20mm.
Foodplant(s): hawthorns (Crataegus spp.), Blackthorn (Prunus spinosa), Rosaceae (Rosaceae spp.), cotoneasters (Cotoneaster spp.), Goat Willow (Salix caprea), oaks (Quercus spp.), broadleaved trees, broadleaved shrubs
Flying: One/two generations, mid May-July and September-October
UK Presence: Resident
National status:


Woodland, fens and gardens.

Regional Information

There are no records in the system yet in Bulgaria.

Similar Species
Grey Dagger Acronicta psi

Larva Type:
With lumps, bumps or horn(s)
Black, white, orange, red
No. of Proleg Pairs: