Chilean Giant Stonefly vs American Needlefly

Side-by-side species comparison

Attribute Chilean Giant Stonefly American Needlefly
Scientific Name Diamphipnoa helicoides Leuctra tenuis
Order Plecoptera Plecoptera
Family Diamphipnoidae Leuctridae
Size 25-40 mm 5-8 mm
Habitat Mountains Rivers & Streams
Diet Detritivores Detritivores
Regions South America (Chile) North America
Conservation Data Deficient Least Concern

Chilean Giant Stonefly

An ancient, large stonefly endemic to Chilean mountain streams. It belongs to a relict family with Gondwanan origins.

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Did You Know?

Its family is considered a living fossil with only two known species, both restricted to Chile.

American Needlefly

A delicate needle-thin stonefly of Appalachian headwater streams. Nymphs are important processors of autumn-shed leaf litter.

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Did You Know?

Multiple Leuctra species can coexist in the same stream by emerging at different times of year.