Spiral cased caddis (Helicopsyche)
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Cased caddisflies
- 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)
Typical habitats
Helicopsyche larvae are common in many stony or gravelly, bush-covered streams.
Feeding
They are “collector-gatherers”, feeding on a range of organic matter accumulating on stream beds.
Indicator value
- Hard bottom: 10
- Soft bottom: 6.8
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
An abundance of Helicopsyche larvae indicates good habitat and water quality conditions, especially if mayfly or stonefly groups are also abundant. They have high tolerance values of 10 (hard bottom sites) and 8.6 (soft bottom sites).