Stonefly · Aquatic insect
Eastern Golden Stone
Acroneuria carolinensis

Size
18–24mm
Hook size
#8–6
Hatch window
Season June–JulyPeak time Evening / after dark
Water temperature
16° peak
12°21°
Hatches from 12°C, peaking at 16°C, tailing off by 21°C.How fish feed on it
Adult insects on the water are inefficient — a caddis skittering to lay eggs, a stonefly blundering about after crawling out, neither built for elegance. Trout treat it as an easy meal and a bit of theatre at once, chasing a moving fly with more enthusiasm than they'd ever give a still one. Movement is the tell; a static adult imitation often just sits there unloved.
Flies that imitate this
Ecology
Where you'll find this
- North America — EastPresent
Present throughout
Identification
Acroneuria carolinensis , the Carolina stone , is a species of common stonefly in the family Perlidae. It is found in North America.

