Blackjacket

Vespula consobrina · Order: Hymenoptera · Family: Vespidae

Also called: Cousin Yellowjacket

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Blackjacket
Photo: Jimmy Dee, CC BY-SA

Blackjacket wasps have a black and white striped abdomen and contrasting black-white coloration for easy identification. Queens are about 17 mm long, workers 10 to 12 mm, and males 15 to 16 mm.

Source: Wikipedia

How to recognize it

They are recognized by a distinct black and white striped pattern on the abdomen and overall black-white coloration.

Source: Wikipedia

Size

Queens reach about 17 mm, workers are 10 to 12 mm, and males are 15 to 16 mm long.

Source: Wikipedia

Where it lives

They mostly live in forested areas and seldom come into contact with people.

Source: Wikipedia

Where it comes from

They occur throughout Canada except Nunavut and in the northern United States.

Source: Wikipedia

Lookalikes

Do not confuse them with Dolichovespula maculata, another species also called “blackjacket”.

Source: Wikipedia

Where it is found in the US

Recorded in 33 of 51 states and DC. Most records: Minnesota, Vermont, Maine, New York, Washington, Pennsylvania, Michigan, New Hampshire.

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

Source: GBIF

Status: native in North America; native in Canada; native in United States. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Same family (Vespidae)

Sources

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

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 2026-10-22.

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.