10th March 2011...heracliana dilemma

Last night I caught 9 Agonopterix spp, all were caught within the hour following dusk.
Little variation was found between 8 of them, but there was a larger, darker one amongst them.
UK Moths quotes heracliana as having a 21mm wingspan, which fits the bill for the moth pictured top.
It then gives the wingspan of A. ciliella as 19-24mm.
The next picture shows another Agonopterix with a wingspan approaching 23mm.
SO, do I record it as ciliella (our micro expert would probably not accept this) or do I kill it and check the hindwing, or just record 9 heraclianas ?
If I kill it, would I be doing this for the right reason ? Maybe it would help me to win the coveted bottle of vino back from Matt Trappings. Decisions............
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Last night was a better night for a while, with temps staying above 6deg for most of the evening and the stiff breeze abating.
No new species, which was slightly disappointing, but tomorrow is another night !
Last nights bag was:-
9 x Agonopterix heracliana !
5 x Common Quaker
1 x Hebrew Character
1 x Small Quaker
1 x Oak Beauty
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AGONOPTERIX HERACLIANA 688

another A. HERACLIANA (well it is now!)

SMALL QUAKER 2182

The superb OAK BEAUTY, 1930, my 4th this year to date Totals to date:-

96 moths of 20 species (14 macro, 6 micro)