Norfolk Verification Grade Criteria

Adult Moths:

1: Generally distinctive and unlikely to be confused with other species. Usually accepted if within documented range and usual occurrence period for Norfolk; otherwise one or more good quality photographs, or possibly a specimen, will be required.

2: Can be confused with other species. Good quality photograph(s) or possibly a specimen may be required if the recorder is not familiar with the species. If records have previously been submitted and accepted, grade 1 criteria will apply.

3: A good quality photograph(s) showing all critical identification features will be required. A voucher specimen may also be required (seek advice before releasing the moth) Worn examples are likely to be unidentifiable unless a specimen is retained for microscopic examination. (Records will only be accepted without a photo if approved by CMR)

4: Dissection required.

Leaf-miners:

A: Record accepted without the need to see the actual leaf or a good photo.

L: Either the leaf or a good photograph required if the recorder is not familiar with the species. If records have previously been submitted and accepted, grade A criteria will apply.

R: Moth will need to be reared and, in some cases, possibly dissected.

Larval cases:

C1: Same as Adult Grade 1.

C2: A good quality photo or specimen of the case and plant/pabulum is required if the recorder is not familiar with the species.

C3: A good quality photo or specimen of the case and plant/pabulum and the bred moth is required.

C4: As in C3 and the moth requires dissection.

(Grades in parenthesis indicate National Grade where grades have been adjusted for Norfolk.)

Norfolk verification grades compiled and regularly reviewed by the Norfolk Moth Survey committee. Micro-moth grades based on Butterfly Conservation national guidelines compiled by Dr John Langmaid, Stephen Palmer, Mark Parsons and Dr Mark Young - January 2016. Macro-moth verification grades compiled by the Norfolk CMR and NMS committee - March 2019 V.1.1