Reasons to tolerate caterpillars

Over the last few years we have noticed more and more caterpillars on the trees.  It wasn’t something I considered very much when we started planting them.  I was thinking about the trees, growing and producing firewood and fruit, maybe doing crafty things with twigs and fibre and exciting things with tree sap. It seems daft, but I hadn’t really considered the new habitat we are creating, albeit slowly.  The insects eat the trees and other things – birds and mammals – eat the insects.  As well as learning more flowers and plant species I am therefore learning more insects as well.  It is a little frustrating, since there is lots of information about butterflies, slightly less easily available about moths, but rather less about their larva.  I spotted a new one today with a fiery bum.  I think it’s a pebble prominent moth caterpillar.  There were a few feeding on one of the aspen trees, which would fit.  I don’t think I’ve ever noticed the moths.

Prominent moth caterpilar july 2017
Possily prominent moth caterpilar

We’re getting lots of looper caterpillars on the alders as well at the moment – possibly magpie moths, which are very common here.  When they’re undisturbed they feed in a continuous stream of caterpillars, but when they sense danger they all rear up and pretend, rather unconvincingly to be twigs.  When they are larger, and single I guess it works better, but I think they’re very cute.  Funnily enough we haven’t seen many sawfly larvae on the gooseberries this year.

 

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I’m also getting lots of caterpillars in the polytunnel.  Generally they are bright green ones eating the brassica, which I don’t mind much at this time of year (although I know it’s dangerous to encourage these things or you end up with a plague).  However I did find a few that had wandered onto my little apricot tree (which is still doing quite well) and were munching away, so I’m afraid they got relocated outside!

I spotted one chrysalis on a seed tray outside which I’ve left be, and I find them all the time if digging in the polytunnel.

Then there are the more glamorous adults.  These are two new ones for me this year: a  dark green fritillary and a common blue.  Neither is particularly rare, just I’ve never seen them in Glendale before.

dark green fritillery crop jul2017
Dark green fritillary on thistle
DSCN1441
Common blue butterfly in gully
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