WhatsThat's picture

Unknown larva and eggcase ?

Observed: 16th June 2012 By: WhatsThatWhatsThat’s reputation in InvertebratesWhatsThat’s reputation in InvertebratesWhatsThat’s reputation in Invertebrates
Unknown larva and eggcase?
Unknown larva and eggcase ?
Description:

Noticed the small brown eggcase 5mm long oval shape with lighter band around centre attached to the underside of an oak leaf by a thread. Then noticed what might possibly be a parasitised larva nearby.
Any ideas as to what they might be will be welcome. I have retained both specimens to see what developes.

Identifications
Species interactions

No interactions present.

Comments

GrizzledBadger's picture

Your unknown larva is the

Your unknown larva is the remains of a caterpillar after the parasite larva has exited to pupate. I have come across similar beneath nettle leaves and they have exited from Peacock caterpillars.

Brock

WhatsThat's picture

Many thanks for the info. I

Many thanks for the info. I have never come across an egg case like the one in the photo. I have retained the specimen so hopefully I will be able to see what developes.

You Never Stop Learning

GrizzledBadger's picture

not an egg-case but a

not an egg-case but a cocoon/pupa.
Learning is a part of life!

Brock

WhatsThat's picture

thank you

Many thanks Brock.

I've just checked my online dictionary for 'cocoon' and I've also added its origin. Cocoon is now firmly fixed in the old grey matter,

COCOON - a silky case spun by the larvae of many insects for protection as pupae.
• a similar structure made by other animals.

ORIGIN late 17th cent.: from French cocon, from medieval Provençal coucoun ‘eggshell, cocoon,’ diminutive of coca ‘shell.’ The verb dates from the mid 19th cent.

You Never Stop Learning