"The adults emerge late in the year (the males from late August and the females a little later in early September) and remain on the wing until early November."
Well that's basically the ivy season surely.
"The principal pollen forage plant is Ivy (Hedera helix)(hence the specific epithet hederae), but both sexes will also nectar at Ivy flowers too. When Ivy is scarce, other species of plants are also visited. The females supply the larval brood almost cells exclusively with nectar and pollen of ivy flowers. When Ivy flowering is delayed, females may also collect pollen at various members of the Daisy family (Asteraceae)."
and not aware of any economically important crops needing pollination in sept-nov (although our loquats start flowering nov).
I think you've rather missed my point. I thought it was accountants who knew the price of everything and the value of nothing.
WHAT is this life if, full of care,
We have no time to stand and stare?—
No time to stand beneath the boughs,
And stare as long as sheep and cows:
No time to see, when woods we pass,
Where squirrels hide their nuts in grass:
No time to see, in broad daylight,
Streams full of stars, like skies at night:
No time to turn at Beauty's glance,
And watch her feet, how they can dance:
No time to wait till her mouth can
Enrich that smile her eyes began?
A poor life this if, full of care,
We have no time to stand and stare.
.