πŸ› True Bugs

Korean Water Scorpion

Laccotrephes japonensis

About 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.

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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.

How to Identify Korean Water Scorpion

Korean Water Scorpion (Laccotrephes japonensis) belongs to the order Hemiptera, family Nepidae. Adults typically measure 30-38 mm.

Korean Water Scorpion Habitat

Korean Water Scorpion is found in ponds & lakes habitats, particularly across East Asia, Japan/Korea. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.

Korean Water Scorpion Diet and Feeding

Korean Water Scorpion is a predatory species that actively hunts and feeds on other insects and small invertebrates. As a predator, it helps control populations of pest species and maintains ecological balance.

Where Is Korean Water Scorpion Found?

Korean Water Scorpion can be found in East Asia, Japan/Korea, where it inhabits ponds & lakes environments. Its distribution is influenced by climate, food availability, and habitat suitability.

Distribution Map

Where Korean Water Scorpion can be found

Is Korean Water Scorpion Dangerous?

Korean Water Scorpion is generally harmless to humans. It does not bite or sting and poses no significant health risk. Like most insects, it prefers to avoid human contact and will typically flee rather than confront a perceived threat.

Korean Water Scorpion Role in Nature

Korean Water Scorpion serves as a natural predator, helping to control populations of other insects. Predatory insects are valuable in both natural ecosystems and agriculture, where they reduce the numbers of pest species without the need for chemical pesticides.

Seasonal Activity

Jan
Feb
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Sep
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Dec
Peak activity Moderate Low / dormant

Frequently Asked Questions About Korean Water Scorpion

What does Korean Water Scorpion look like?

The Korean Water Scorpion typically measures 30-38 mm.

Where is Korean Water Scorpion found?

The Korean Water Scorpion is found in East Asia, Japan/Korea and typically inhabits ponds & lakes environments.

What does Korean Water Scorpion eat?

The Korean Water Scorpion is a predator that hunts and feeds on other insects and small invertebrates.

Is Korean Water Scorpion dangerous to humans?

The Korean Water Scorpion is generally harmless to humans. It does not bite or sting and poses no significant health risk.

What is an interesting fact about Korean Water Scorpion?

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.

Cite This Page

APA:
InsectDiscover. (2026). Korean Water Scorpion (Laccotrephes japonensis). Retrieved from https://insectdiscover.com/insect/korean-water-scorpion

MLA:
"Korean Water Scorpion." InsectDiscover, https://insectdiscover.com/insect/korean-water-scorpion.