Striped lax beetle

Thelyphassa lineata · Order: Coleoptera · Family: Oedemeridae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Striped lax beetle
Photo: Jeremy Rolfe, CC BY

Adults are about 15 mm long. They have a golden-brown body with two black stripes on the abdomen and one on the pronotum. The species lives only in New Zealand and its larvae develop in rotting forest logs, while adults likely feed on pollen and nectar.

Source: Wikipedia

How to recognize it

The beetle’s body is golden-brown with two black side stripes on the abdomen and a single black stripe on the pronotum.

Source: Wikipedia

Size

Adults measure roughly 15 mm in length.

Source: Wikipedia

What it eats

Larvae live in decaying forest logs.

Source: Wikipedia

Where it comes from

It is endemic to New Zealand.

Source: Wikipedia

Where it is found in the US

Recorded in 1 of 51 states and DC. Most records: Hawaii.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

What does the striped lax beetle look like?

It has a golden-brown body with two black stripes along the abdomen and one black stripe on the pronotum.

Source: Wikipedia

How big does it get?

Adults are about 15 mm long.

Source: Wikipedia

Where is it found?

It is native and restricted to New Zealand.

Source: Wikipedia

What do the larvae eat?

The larvae live in and feed on rotten forest logs.

Source: Wikipedia

What do adult beetles eat?

Adults are believed to feed on pollen and nectar.

Source: Wikipedia

Same family (Oedemeridae)

Sources

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

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.