Striped lax beetle

Thelyphassa lineata

Can irritate skin. The striped lax beetle can cause skin blisters from its cantharidin secretion.

Source: Wikipedia

Striped lax beetle
Photo: Jeremy Rolfe, CC BY

Adults are about 15 mm long and have a golden-brown body with distinctive black stripes on the abdomen and pronotum. They are native to New Zealand, the larvae live in rotting forest logs and adults likely feed on pollen and nectar. When handled they can release cantharidin, a chemical that burns the skin and creates blisters.

Source: Wikipedia

How to recognize it

The beetle’s body is golden-brown with two black stripes along each side of the abdomen and one black stripe on the pronotum.

Source: Wikipedia

Size

An adult measures about 15 mm in length.

Source: Wikipedia

Does it bite or sting?

The beetle can secrete cantharidin, which causes skin blisters on contact.

Source: Wikipedia

What it eats

Larvae develop inside rotting forest logs.

Source: Wikipedia

Where it comes from

It is endemic to New Zealand.

Source: Wikipedia

More photos

Questions people ask

Can the striped lax beetle hurt my skin?

Yes, it can release cantharidin that burns the skin and creates blisters.

Source: Wikipedia

What do the larvae eat?

The larvae live in and feed on rotten forest logs.

Source: Wikipedia

What do adult striped lax beetles eat?

Adults are believed to feed on pollen and nectar.

Source: Wikipedia

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Thelyphassa_lineata

Look it up elsewhere: iNaturalist · BugGuide · Wikipedia

Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.

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