B. thoracella (Thunb.) Res., 1977-1980. Tilia cordata. Loc. c. in central Essex.
VC 19. 71 Great Leighs, roadside at TL 720170 and 731195; 72 High Garrett, at TL 783277; 81
Kelvedon;82 Markshall Wood; *Chalkney Wood; 83 Little Maplestead, roadside at TL 836337;
03 Boxted (AME).
B. ulmella Zell. Res., 1899-1980. Quercus spp. Wdspd and c. 88 *Eastwood (Whittle, 1899c).
B. crataegi Zell. Res., 1902-1980. Crataegus, Pyrus. Wdspd and c. 88 *Prittlewell (Whittle, 1902a).
B. demaryella (Dup.) Res., 1972. Betula. V. loc. and r.
VC 18. 70 Backwarden NR. VC 19. *Fingringhoe Wick NR (AME).
The HIEROXESTIDAE, of which three species (two adventive) have been
recorded in Britain, are not represented in Essex. However, Oinophila v-flava
(Haw.) is quite likely to occur in cellars.
GRACILLARIIDAE
Small moths which include some of the most attractively-coloured
microlepidoptera. They adopt a characteristic attitude at rest, with the anterior
part raised at an angle displaying their decorated fore- and midlegs which
harmonise with the wing-pattern. The larvae at first mine the epidermis of
leaves, feeding only on the sap. At a later ecdysis the structure of their
mouth-parts changes and they now chew the parenchyma, still within their
mines. A few complete their feeding in this manner but the majority, after a
further ecdysis, leave their mines and feed within folded or conically rolled
leaves. The moult at which these changes take place seems to vary between
species. Of the 33 species reliably recorded in Britain, 21 have been taken in
Essex and two others are likely to occur.
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