Hunsdon Mead Nature Reserve (Essex / Hertfordshire)
Pelham Field Centre (CEGB) (Essex / Hertfordshire)
Status of species
The following terms are used in the systematic list-
Resident - known or presumed to breed or have bred in the County.
Migrant - an immigrant, whether on a regular or casual basis.
Colonist - an insect which has established itself in Essex in recent years.
Vagrant - an insect believed to have wandered from another part of Britain and not thought to have
bred in Essex.
No recent record - an insect not recorded in Essex since 1924, whether extinct or overlooked. This
conforms to the policy adopted for the Guide, which relegated to an appendix all species which had
last been recorded in the County prior to 1925.
Degree of abundance and distribution
The following terms are used in the systematic list-
(a). Degree of abundance (b). Distribution
Abundant Widespread
Very common Fairly Widespread
Common Rather local
Fairly common Local
Rare Very local
Very rare
Abbreviations
The following abbreviations are used:-
BMNH - British Museum (Natural History)
MBGBI - The Moths and Butterflies of Great Britain and Ireland (Heath et al, 1979;
1983)
NR - Nature Reserve
SME - The smaller moths of Essex
VCH - The Victoria County History of Essex
Basic information on species
The following basic information appears against each species in the order shown: -
Scientific name with author
Scientific name used in the Guide where different (in brackets)
English name (in bold type)
Page number of the reference (where it exists) to the species the Guide
Status summary
New records (where applicable)
Where individual records are given in accordance with the policy mentioned above, the locality is
preceded by the number of the 10km grid square in which it is located. Wherever possible, the year of a
record or, in the case of an annually observed species, the present status is given. Where the year is not
available, it can be taken that it is post-1969 unless otherwise stated. The full date, however, appears
only in the case of a very rare Essex species or the first record of a recent colonist
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