All entries for Saturday 20 February 2016

First capture of the year in the suction trap at Wellesbourne

We caught a single fresh willow-carrot aphid, Cavariella aegopodii during the period 1^st to 7^th February 2016! None were captured elsewhere and because it is so early in the year we assume it must have overwintered as an active individual on an umbellifer, as it is far too early to have hatched from an egg and flown from willow. Since we have quite a lot of overwintered carrots in the vicinity - to maintain the carrot fly population - it probably came from these.

Rosemary Collier : 20 Feb 2016 16:19 |  Comments (0) |  Close comments |  Report a problem