Giant Katydid

Stilpnochlora couloniana · Order: Orthoptera · Family: Tettigoniidae

Also called: Coulon's giant katydid

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Giant Katydid
Photo: Fyn Kynd, CC BY-SA

The giant katydid is the biggest katydid in the United States, reaching about 6.6 cm in males and 7.8 cm in females. It is native to the southeastern United States, the Bahamas, and Cuba.

Source: Wikipedia

Size

Adult males average about 6.6 cm (2.6 in) long, while adult females average about 7.8 cm (3.1 in). Cuban specimens tend to be 5 to 10 % larger than U.S. specimens.

Source: Wikipedia

Where it comes from

It is native to the southeastern United States, specifically Florida and Georgia. Its range also includes the Bahamas and Cuba.

Source: Wikipedia

Where it is found in the US

Recorded in 3 of 51 states and DC. Most records: Florida, Georgia, Mississippi.

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

Source: GBIF

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

Months it is reported in the US

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Source: GBIF

More photos

Giant Katydid photo 3
Photo: iNaturalist user, CC0
Giant Katydid photo 4
Photo: Nick Block, CC BY
Giant Katydid photo 5
Photo: iNaturalist user, CC0
Giant Katydid photo 6
Photo: iNaturalist user, CC0

Same family (Tettigoniidae)

Great Green Bush-cricketGreat Green Bush-cricketTettigonia viridissimaCan biteDark Bush-cricketDark Bush-cricketPholidoptera griseoapteraMediterranean KatydidMediterranean KatydidPhaneroptera nanaDamages trees, gardens or cropsFork-tailed Bush KatydidFork-tailed Bush KatydidScudderia furcataDamages trees, gardens or cropsSpeckled Bush-cricketSpeckled Bush-cricketLeptophyes punctatissimaRoesel's Bush-cricketRoesel's Bush-cricketRoeseliana roeselii

Sources

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

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.