Amoeba's picture

Mystery Insect larva

Observed: 14th May 2010 By: AmoebaAmoeba’s reputation in InvertebratesAmoeba’s reputation in Invertebrates
Mystery insect larva.jpg
Description:

Case length up to ~ 1 cm. Today they are strongly bonded to the substrate. On casual observation appear very similar to Caddis larvae, but all but one of the caddis larvae I know are aquatic, but this isn't the same as Enoicyla pusilla [based upon case materials]. Fore parts of the larvae are dark. My first observation in North Surrey was April 2010.
I do not believe it's the Case-bearing Clothes Moth (Tinea pellionella). We have these in the house.
I have seen a dozen or more of these. This is a typical example, with around half a dozen or more longer pieces of woody stem attached to the case.
It looks like Psyche casta

Identifications
Species interactions

No interactions present.

Comments

Kluut's picture

Enoicyla pusilla

The terrestrial caddis is restricted (supposedly) to Worcestershire and a little outside the county. Caddis attach whatever is convenient to their cases although Eniocyla does not usually use such large pieces.

Ian Wallace's picture

It is a popular misconception

It is a popular misconception that caddis larvae just attach whatever is around to make a case. Some species do, but many very carefully select and/or prepare pieces for their cases. You are right abut Enoicyla cases.

As caddis recording scheme organisr this is probably the commonest Lepidopteran I get sent but there are many other caterpillars and a few beetle larvae and even flies that make cases!

Ian Wallace, UK Trichoptera Recording Scheme