Peter M McEvoy's picture

Cocoon on Carex otrubae

Observed: 24th June 2009 By: Peter M McEvoy
Botanical Society of Britain and IrelandNew Flora of the Isle of Man
Peter M McEvoy’s reputation in InvertebratesPeter M McEvoy’s reputation in Invertebrates

found on coastal grassland

Species interactions

No interactions present.


Martin Harvey's picture


Can you say more about this charlie, are these larvae or pupae? I didn't know weevils spun silk into this sort of cocoon.

Entomologist and biological recorder

charlieb's picture

Sorry, I meant to add a

Sorry, I meant to add a comment to this... I've found similar structures before, and tentatively ID'd them as weevil pupa/cocoon - but none that I have collected have yet to emerge.

Hypera postica is a good example, or search for "weevil cocoon".

I think some chrysomelids do something similar.

dshubble's picture


I'd tend to agree that it's a weevil cocoon, though I've not seen one exactly like this photo.

Peter M McEvoy's picture


Thanks for the useful info. I will keep an eye out for more this season and try to get some better pictures.

New Flora of the Isle of Man