Bug FAQAlpine Stonefly
Thaumatoperla alpina · Order: Plecoptera · Family: Eustheniidae
Adult females are about 36 to 44 mm long, while males are smaller, and they cannot fly. They live in alpine riparian heathland and the nymphs develop in the hyporheic zone of mountain streams. The species is endemic to the Bogong High Plains of Victoria’s alpine region in south-eastern Australia.
Source: Wikipedia
Size
Females measure 36 to 44 mm in body length, not counting the antennae and cerci; males are generally smaller. Both sexes are unable to fly.
Source: Wikipedia
Life cycle
The nymph stage lasts about three years before they emerge as adults.
Source: Wikipedia
When you see it
Adults appear from January through April.
Source: Wikipedia
Where it comes from
Thaumatoperla alpina is endemic to the Bogong High Plains in the Victorian alpine area of south-eastern Australia.
Source: Wikipedia
More photos
Questions people ask
Same family (Eustheniidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Thaumatoperla_alpina
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.