Biology Reference
In-Depth Information
Acronicta tridens
(Denis & Schiffermüller)
(
866-867
)
Dark dagger moth
Larvae of this generally distributed species occur on
various trees and shrubs but are associated most
frequently with rosaceous hosts. They feed from July
onwards but damage is limited to the foliage and of little
or no importance. Fully grown individuals (
c
.40mm
long) are mainly black, marked with red and white
along the back and sides; there is a black peg-like hump
on the first abdominal segment and a smaller but
broader swelling on the eighth; the body hairs are long
and mainly blackish. Adults are virtually identical in
appearance to those of
Acronicta psi
; they occur in June
and July with, in favourable conditions, a partial second
generation in September.
Agrotis segetum
(Denis & Schiffermüller)
(
868-869
)
Turnip moth
An important horticultural pest, sometimes affecting
herbaceous ornamentals such as China aster
(
Callistephus chinensis
),
Chrysanthemum
,
Dahlia
,
Michaelmas daisy (
Aster
),
Petunia
,
Phlox
, pot marigold
(
Calendula officinalis
), primrose (
Primula vulgaris
)
and
Zinnia
; seedling trees and shrubs are also attacked.
Eurasiatic. Widespread in Europe.
DESCRIPTION
Adult:
38-44 mm wingspan; fore wings whitish brown,
with brownish black or blackish markings; hind wings
pearly whitish; male antennae distinctly bipectinate.
Larva:
up to 35 mm long; plump-bodied, glossy
greyish brown, with a yellowish or pinkish tinge and
indistinct darkish lines along the back; pinacula black.
Pupa:
18-20 mm long; light reddish brown; cremaster
with two divergent spines.
867
866
866
Larva of dark dagger moth (
Acronicta tridens
).
867
Dark dagger moth (
Acronicta tridens
).
868
869
868
Male turnip moth (
Agrotis segetum
).
869
Larva of turnip moth (
Agrotis segetum
).
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