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Meadow Brown ab.
Posted: Fri Mar 31, 2017 11:46 pm
by Essex Bertie
I'm posting this message on behalf of Dave Chandler who sent me a photo taken by his friend, Robert:
"This photograph was taken on Benfleet Downs in South Essex last summer.
My friend & I are curious; how unusual to have the two discalspots on the left fore wing?"
Re: Meadow Brown ab.
Posted: Sat Apr 01, 2017 6:43 am
by Padfield
This is ab. tripunctata (Wetherspoon and Wetherspoon, 1952). It is believed to be caused by vibrations from heavy farm vehicles during the pupal stage, resulting in a group of cells slipping sideways and duplicating.
Guy
Re: Meadow Brown ab.
Posted: Sat Apr 01, 2017 10:16 pm
by David M
Padfield wrote:This is ab. tripunctata (Wetherspoon and Wetherspoon, 1952). It is believed to be caused by vibrations from heavy farm vehicles during the pupal stage, resulting in a group of cells slipping sideways and duplicating.
A shame no-one's bitten.
Was this all your own work, Guy, or did you have help?
Re: Meadow Brown ab.
Posted: Sun Apr 02, 2017 12:29 pm
by Padfield
I merely added some bait, David.
It was Bertie who dangled the hook!
Guy
Re: Meadow Brown ab.
Posted: Sun Apr 02, 2017 3:14 pm
by Roger Gibbons
It was a bit of a giveaway that the two ocelli were identical. Presumably one of the Wetherspoons in question had the initials JD.
Roger