Biology Reference
In-Depth Information
629
630
629
Female of
Archips crataegana
.
630
Larva of
Archips crataegana
.
631
632
631
Male fruit tree tortrix moth (
Archips podana
).
632
Larva of fruit tree tortrix moth (
Archips podana
).
Archips crataegana
(Hübner) (
629-630
)
A minor pest of trees and shrubs, including birch
(
Betula
), ash (
Fraxinus excelsior
), crab-apple (
Malus
),
elm (
Ulmus
), flowering cherry (
Prunus
), lime (
Tilia
),
oak (
Quercus
) and broad-leaved willows such as grey
willow (
Salix cinerea
). Eurasiatic. Widely distributed in
central and much of northern Europe.
and disguises them as bird-droppings. Eggs hatch in
April or early May. The tiny larvae are very active and
rapidly climb the tree to begin feeding on the underside
of the leaves. Later, each feeds inside a tightly rolled
leaf edge, usually on fully expanded foliage at the shoot
tips. Pupation occurs in a rolled leaf or between two
spun leaves. Adults emerge a few weeks later.
DESCRIPTION
Adult female:
23-27 mm wingspan; fore wings brown,
with darker, chocolate-coloured markings; hind wings
brownish grey.
Adult male:
19-22 mm wingspan; fore
wings paler than in female.
Egg:
0.6
DAMAGE
Feeding is restricted mainly to the expanded leaves and,
unless larvae are very numerous, damage is
insignificant.
0.4 mm; laid in a
white mass.
Larva:
up to 23 mm long; dull greenish
black, with black pinacula; head, prothoracic plate and
anal plate shiny black; anal comb black, with 6-8 teeth.
Pupa:
9-12 mm long; dull black; cremaster elongate.
×
Archips podana
(Scopoli) (
631-632
)
Fruit tree tortrix moth
A generally common, polyphagous pest of trees and
shrubs, including birch (
Betula
), crab-apple (
Malus
),
flowering cherry (
Prunus
), hawthorn (
Crataegus
),
Japanese spindle (
Euonymus japonica
), ornamental pear
(
Pyrus calleryana
'Chanticleer') and
Sorbus
; often
present on garden trees and nursery stock. Eurasiatic;
also present in North America, probably as an
introduced species. Widely distributed in Europe.
LIFE HISTORY
Adults of this single-brooded species occur from late
June to August. Eggs are laid in conspicuous batches of
about 30 on the trunks and main branches, and then
coated with a white substance which quickly hardens
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