In this section
- Axehead caddis (Oxyethira)
- Cased caddis (Alloecentrella)
- Cased caddis (Pseudoeconesus)
- Cased caddis (Zelandopsyche)
- Cased caddisfly (Hudsonema)
- Kokiria caddisfly (Kokiriidae)
- Purse caddis (Paroxyethira)
- Sandy cased caddis (Oecetis)
- Sandy cased caddis (Pycnocentrella)
- Sandy cased caddis (Pycnocentria)
- Sandy cased caddis (Zelolessica)
- Smooth cased caddis (Beraeoptera)
- Smooth cased caddis (Confluens)
- Smooth cased caddis (Olinga)
- Spiral cased caddis (Helicopsyche)
- Spiral cased caddis (Rakiura)
- Stick caddis (Triplectides)
- Stick caddis (Triplectidina)
- Stony cased caddis (Oeconesus)
- Stony cased caddis (Philorheithrus)
- Stony cased caddis (Pycnocentrodes)
Pycnocentrella caddis larvae construct mobile cases covered in sand grains. They look much like the more common Pycnocentria, but Pycnocentrella have a distinctive comb-like row of hairs on the front/side edge of the pronotum (first segment behind the head).
Pycnocentrella larvae are much less common than the similar-looking Pycnocentria, but they are most likely to be found in gravelly, bush covered streams.
They are collector-gatherers (feeding on fine particulate matter including algae) and shredders (feeding on leaf litter).
- Hard bottom: 9
- Soft bottom: unassigned
The tolerance values (ranging from 0 to 10) give an indication of which are the sensitive taxa (values of 8 or more) and which are the tolerant taxa (values of 3 or less). For more information see: Indicator species
The presence of Pycnocentrella larvae indicates good habitat and water quality, particularly if a range of mayfly and stonefly nymphs are also present. They have a high tolerance value of 9 for hard bottom sites (there is no soft bottom value).