Showing posts with label Coccinella septempunctata. Show all posts
Showing posts with label Coccinella septempunctata. Show all posts

Saturday, April 24, 2010

Vegetarian Ladybirds


Ladybirds have a fine reputattion as greenfly-slayers, but what do they feed on in spring, before the aphid population explosion gets underway and animal food is hard to come by? This one - and scores like it - was feeding on the nectar of Alexanders Smyrnium olasatrum flowers. This is one of the commonest flowering plants along some parts of the Norfolk coast at this time of year, and must be a very welcome food resource for the large numbers of ladybirds that have recently emerged from hibernation.
Meanwhile, for those ladybirds for whom there was no conveniently blooming Alexanders, the pollen from silver birch catkins seemed to be an acceptable substitute. The dangly yellow catkins are male, the upright green catkins are female, and after pollination (which will be courtesy of the wind rather than the ladybirds) the female catkins will become spikes of tiny winged seeds that are favourite food for siskins and redpolls in winter.

Tuesday, March 16, 2010

Cautious Optimism


Blue skies and wild cherry buds showing the first signs of bursting, but this little huddle of still-hibernating 7-spot ladybirds Coccinella septempuncata don't seem to have got the message that spring has arrived .... or maybe they know something that we don't...