Biology Reference
In-Depth Information
1117
Aculus ballei
(Nalepa) (
1117
)
An often common, free-living species that sometimes
causes significant leaf bronzing on lime (
Tilia
) trees.
Affected foliage appears dull and sickly. Heavy
infestations affect the vigour of young trees, including
nursery stock.
Eriophyes leiosoma
(Nalepa) (
1118
)
syn.
E. tiliae liosoma
(Nalepa)
Lime leaf erineum mite
A generally common species, inhabiting large, irregular,
white, downy patches on the underside of leaves of lime
(
Tilia
) trees. The galls are formed from May onwards,
their upper surface appearing light green; such galls
are well developed by mid-summer, and affected tissue
eventually turns brown. Although a considerable
proportion of the leaf area may be affected, the galls
are relatively shallow and usually cause little or no
distortion of the leaf blade. However, attacks are
sometimes heavy on small trees, resulting in
considerable disfigurement.
1117
Aculus ballei
damage to leaves of
Tilia
.
1118
Eriophyes tiliae
(Nalepa) (
1119
)
syn.
E. gallarumtiliae
(Turpin);
E. tiliae
(Pagenstecher)
Lime nail-gall mite
An often abundant species, responsible for the
elongated, tack-like galls which often occur in vast
numbers on the upper surface of the leaves of large-
leafed lime (
Tilia platyphyllos
). The galls are up to
15 mm long, and vary from light greenish to red or
brown. They develop from May or June onwards but,
although disfiguring the foliage of ornamental trees,
appear to have little or no effect on plant growth. The
causal mites are elongate, with about 75 abdominal
tergites and sternites.
1118
Galls of
Eriophyes leiosoma
on leaf of
Tilia
.
1119
1119
Galls of lime nail gall mite (
Eriophyes tiliae
) on leaf of
Tilia platyphyllos
.
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