A medium sized brown caddis.  In common with many members of this family its wings are patterned with various streaks and a few blobs.  It has pale tan legs and usually a pale patch on top of the head and thorax.  The antennae do not have any spiral thickening.  There are a number of very similar species and detailed examination is necessary.

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Usually prefers flowing water - larvae can be found in trickles, and streams but sometimes in small stony lakes. Its substratum preference includes rocks, boulders, bedrock, plants, mosses and particulate organic matter. This species shows a preference acidic water, and can be found in brackish water areas.

Adults of Plectrocnemia conspersa can be found on the wing from May to November.

Widespread and fairly frequent throughout Britain.

Occasional in Leicestershire and Rutland.