Long-horned Caddisfly vs Korean Water Scorpion

Side-by-side species comparison

Attribute Long-horned Caddisfly Korean Water Scorpion
Scientific Name Mystacides longicornis Laccotrephes japonensis
Order Trichoptera Hemiptera
Family Leptoceridae Nepidae
Size 7-10 mm body 30-38 mm
Habitat Ponds & Lakes Ponds & Lakes
Diet Detritivores Predators
Regions Europe East Asia, Japan/Korea
Conservation Least Concern Least Concern

Long-horned Caddisfly

A slender caddisfly with antennae three times its body length.

💡

Did You Know?

Its extraordinarily long antennae are held forward during its weak fluttering flight.

Korean Water Scorpion

A flat, leaf-shaped aquatic predator found in Japan and Korea. Despite its name, it is not a true scorpion but a true bug with raptorial forelegs. Breathes through a siphon-like tail appendage.

💡

Did You Know?

The long breathing siphon at the rear works like a snorkel, allowing the water scorpion to breathe while remaining submerged and hidden among leaf litter.