Biology Reference
In-Depth Information
615
Acleris sparsana
(Denis & Schiffermüller)
syn.
A. fagana
(Curtis);
A. reticulana
(Haworth)
A generally common but minor pest of beech (
Fagus
sylvatica
) and sycamore (
Acer pseudoplatanus
), and
often found on such hosts in parks and gardens; in
mainland Europe, additional hosts include birch
(
Betula
), oak (
Quercus
), poplar (
Populus
) and rowan
(
Sorbus aucuparia
). Widespread in Europe.
DESCRIPTION
Adult:
18-22 mm wingspan; fore wings grey to white,
marked with reddish brown and yellowish, often with an
expanded costal blotch; hind wings grey.
Larva:
up to
16 mm long; light green, with inconspicuous, shiny
pinacula; head brownish green or light green;
prothoracic plate green, with a black mark on each side;
anal plate green; thoracic legs green.
Pupa:
8-10 mm
long; light brown.
615
Female garden rose tortrix moth (
Acleris variegana
).
616
LIFE HISTORY
Adults appear in the late summer and autumn,
hibernating in the winter and reappearing in the spring.
Larvae occur from June to late July or early August.
Young larvae spin flimsy webs on the underside of
expanded leaves. Older individuals occur between two
overlapping leaves which they spin together with silk,
sheltering in a folded portion of the uppermost leaf.
Fully fed individuals pupate in July or August, either
within the larval habitation or amongst debris on the
ground.
616
Larva of garden rose tortrix moth (
Acleris variegana
).
DAMAGE
Larval feeding is restricted to the leaves and, although
sometimes noticeable, is of no economic importance.
LIFE HISTORY
Adults occur from July to September. Eggs are then laid
singly or in small batches on either side of leaves,
usually along the midrib. They hatch in the following
spring. The larvae feed on the young shoots from May
to late June or early July, sheltering within loosely spun
leaves or in folded leaf edges. Pupation occurs in the
larval habitation or amongst fallen leaves.
Acleris variegana
(Denis & Schiffermüller)
(
615-616
)
Garden rose tortrix moth
A generally common pest of rosaceous plants, including
flowering cherry (
Prunus
), but most common on rose
(
Rosa
); also occurs on barberry (
Berberis
). Palaearctic.
Widely distributed in Europe.
DESCRIPTION
Adult:
14-18 mm wingspan; fore wings whitish
ochreous to purplish, variably suffused with grey,
frequently with much of the basal half white and with
distinct, often black, scale tufts; hind wings grey.
Egg:
0.6
DAMAGE
Larval habitations are unsightly and cause distortion.
0.5 mm; pale yellowish to reddish.
Larva:
up to
14 mm long; light green or yellowish green; head and
prothoracic plate yellowish brown or greenish brown;
anal plate green; thoracic legs yellowish brown.
Pupa:
7-8 mm long; light brown.
×
Search WWH ::
Custom Search