Keyhole Wasp

Pachodynerus nasidens · Order: Hymenoptera · Family: Eumenidae

Also called: Key hole wasp

Can sting. It can sting people, causing a typical wasp sting.

Source: Wikipedia

Keyhole Wasp
Photo: Bob Peterson, CC BY-SA

The keyhole wasp is a stinging wasp in the Vespidae family. It originates from the Neotropics and has spread to the northern United States, parts of the Pacific, and recently to Brisbane, Australia. In Brisbane it nests in aircraft pitot tubes, creating a safety risk for planes.

Source: Wikipedia

How to recognize it

Keyhole wasp (Pachodynerus nasidens) is a stinging wasp in the family Vespidae.

Source: Wikipedia

Is it a pest in the house?

In Brisbane it nests in aircraft pitot tubes, posing a risk to air safety.

Source: Wikipedia

Does it bite or sting?

As a stinging wasp, it can deliver a sting to people.

Source: Wikipedia

Where it lives

In Brisbane, Australia it has recently become established.

Source: Wikipedia

Where it comes from

Its original range is the Neotropics.

Source: Wikipedia

Where it is found in the US

Recorded in 4 of 51 states and DC. Most records: Florida, Texas, Hawaii, Arizona.

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

Can the keyhole wasp sting people?

Yes, it can sting, causing the usual wasp sting reaction.

Source: Wikipedia

Why are they a problem for aircraft?

They like to nest in pitot tubes, which can interfere with aircraft instruments.

Source: Wikipedia

Same family (Eumenidae)

Sources

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

Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · 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.