The New Zealand hydrobiosid caddis larvae have pincers on their forelegs. Psilochorema larvae tend to have a long, slender body, prothorax (first segment behind the head) and head. The prosternal plate (shield-like plate between the forelegs) is much longer than wide. Typically the head and pronotum are red-brown in colour.
Psilochorema larvae can be common in bush-covered and farmland stony streams.
They are predators, feeding on other stream invertebrates.
Psilochorema larvae can be an indication of good water quality, particularly if they are found along with a range of mayfly and stonefly taxa. They have tolerance values of 8 (hard bottom sites) and 7.8 (soft bottom sites).