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(Coleoptera, Diptera, Hymenoptera and Lepidoptera)
by
Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds
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ERIOBOTRYA.
Loquat. [Rosaceae]
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One
species of
Eriobotrya
is
recorded
in Britain.
One British miner is recorded on Eriobotrya.
A key to the European miners recorded on Eriobotrya is provided in Bladmineerders van Europa. |
Key for the identification of the known mines of British
insects (Diptera and non-Diptera) recorded on Eriobotrya
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1 >
Leaf-miner
and case-bearer: The
larva feeds by inserting its head into small mines it creates on
the leaves of birch, elm, alder, or hazel. Occasionally it is found
feeding on other trees, or on herbaceous plants onto which it has
accidentally Fallén. It forms two cases during its larval life.
The first case is initially curved, smooth, laterally compressed
with a bivalved anal opening, and about 2 mm long in September.
During October it feeds, and adds a few rough collars of larval
material around the oral opening. After hibernation, it feeds again
in April and early May, adding more protruding collars until they
equal or exceed the original smooth part of the case. At the same
time, it expands the case girth by the creation of a silk gusset
ventrally. The second case, 6 or 7 mm long, is formed in May, leaving
the vacated first case attached to its last feeding mine. The new
case is tubular with a trivalved crimp at the anal opening. The
dorsum is formed from the edge of the leaf from which the case was
cut. This results in a more or less serrated dorsal keel, depending
on the plant species and the individual piece of leaf used. Considerable
variation in the degree of serration can be found, even among specimens
off the same tree. The case colour varies with food plant, from
yellowish brown on birch, darkening through elm and hazel to dark
brown on alder.
The
strongly curved young case is is a composite leaf case, the adult
case is a tubular leaf case. The adult case is bivalved, about 7
mm in length; the mouth angle is around 30°. The case is straw
coloured and almost always has a toothed dorsal keel (remnant of
the margin of the leaf from which the case was cut). Neither larvae
or cases of C.
coracipennella, prunifoliae, serratella and spinella can be
separated; from serratella. |
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On Alnus, Betula, Corylus, Ulmus and Sorbus, but not yet on Eriobotrya, in Britain plus Carpinus,
Mespilus, Ostrya, Hippophae, Ribes, Myrica, Forsythia, Amelanchier,
Chaenomeles, Cotoneaster, Crataegus, Cydonia, Eriobotrya, Malus,
Prunus, Sorbus,
Spiraea, Populus and Salix elsewhere. This is probably the commonest species of British
coleophorid, and is found throughout the British Isles. Widespread
in continental Europe.
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Coleophora
serratella (Linnaeus 1761) [Lepidoptera: Coleophoridae]. |
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