nightfly's picture

Crazy cocoon

Observed: 31st July 2013 By: nightflynightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebrates
CIMG0322
CIMG0320
Description:

Looks like a moth cocoon, a bit over one cm, attached to a burdock. The remains of the caterpillars head is visible at the seed head. It almnost appears as if the caterpillar has become the cocoon on this one instead of constructing it- maybe that means its just a chrysalis?

Identifications

No identification made yet.

Species interactions

No interactions present.

Comments

Martin Harvey's picture

parasitoid?

Not sure, but I wonder if this is caused by a parasitic insect, which has pupated inside the caterpillar? I suppose the other possibility is
that the caterpillar has started to pupate but the process has gone wrong, and it died before making the transition.

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Entomologist and biological recorder

nightfly's picture

Yes Martin, I had considered

Yes Martin,

I had considered parasitic influence on this oddity. I had also planned to take it home and keep an eye on any change so I hung the stalk of burdock on a branch while chasing large ichneumons with a tub. Finally got my ichneumon and then went home with only the above pics. It might still be where I left it all the same, its about 6 miles from where I live so I'd need to go and look.

Cathal.