Biology Reference
In-Depth Information
grown individuals are 40-45 mm long and yellowish
green to pinkish green, with several white spots and
three pale lines along the back, a yellow stripe (broadly
edged above with greenish black) along each side and a
yellowish-brown head.
They complete their development in June and then
pupate. The mainly pinkish-grey to reddish-grey adults
(32-35 mm wingspan) appear in the following spring.
Orthosia munda
(Denis & Schiffermüller)
(
912-913
)
Twin-spotted quaker moth
This widely distributed, mainly woodland species is
associated with various trees and shrubs, including
aspen (
Populus tremula
), crab-apple (
Malus
), elm
(
Ulmus
), honeysuckle (
Lonicera
) and oak (
Quercus
).
The larvae (up to 45 mm long) are light brown to dark
brown, with brownish-yellow dorsal and subdorsal
lines, and a pale yellowish-brown spiracular stripe.
They feed from April to June, and sometimes cause
minor damage to the young foliage of nursery stock and
garden trees. The reddish-ochreous to pale greyish-
ochreous adults (38-40 mm wingspan) occur mainly in
March and April.
Orthosia miniosa
(Denis & Schiffermüller)
(
910-911
)
Blossom underwing moth
A widespread but local species, confined mainly to oak
woodlands. The moths occur in March and April, eggs
being laid in batches on the shoots of oak (
Quercus
),
especially scrub-oaks. At first, larvae feed gregariously,
clustering together within the shelter of slight webs spun
close to the shoot tips. Such webs are sometimes noted
during May on young amenity or nursery trees growing
in the vicinity of oak woods. Later, the larvae disperse to
feed individually; they may then infest various other trees
and shrubs, including beech (
Fagus sylvatica
), birch
(
Betula
) and
Sorbus
. Fully grown larvae (35-40 mm
long) are mainly blue to bluish grey, with three yellow
lines along the back and prominent, black, dorsal spots.
910
911
910
Larva of blossom underwing moth (
Orthosia miniosa
).
911
Blossom underwing moth (
Orthosia miniosa
).
912
913
912
Larva of twin-spot quaker moth (
Orthosia munda
).
913
Twin-spotted quaker moth (
Orthosia munda
).
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