If it's November it must be December

I ran 2 traps in the garden last night here on Bringsty Commnon as the temperatures held up nicely. 17 species in total,  15 macro and 2 micro.  No migrants at all (as per usual here).  Of interest was a single Heart & Dart and no less than 72 December moths. Full list:

December 72
Merveille du Jour 12
Feathered Thorn 9
Brick 5
Yellow-line Quaker 5
Red-green Carpet 3
Winter 2
November 2 (gen checked)
Red-line Quaker 2
Pale November 1 (gen checked)
Spruce Carpet 1
Heart & Dart 1
Mottled Umber 1
Common Marbled Carpet 1
Black Rustic 1
Epiphyas postvittana 1
Acleris sparsana 1

Bringsty Common: December moth

Bringsty Common: Heart & Dart

What is the collectoive noun for a group of December moths?  These gathered together after I tapped out the eggboxes.