Stilpnochlora couloniana
In 3 days ~20% in a week ~30%
Stilpnochlora couloniana is a species of phaneropterine katydid in the family Tettigoniidae, native to southeastern United States (Florida and Georgia; the only Steirodontini in the US), the Bahamas and Cuba. It is known as the giant katydid (a name also used for some other species) and it is the largest katydid in the United States, with an average length of 6.6 cm (2.6 in) in adult males and 7.8 cm (3.1 in) in adult females. Individuals from Cuba tend to grow 5–10% larger than those from the United States. They are sometimes kept as pets. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Everglades National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Giant Katydid sighting in Everglades National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 213th most-seen of the 496 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
February–March, May–June and November–December
In those months about 10% of wildlife watchers report a Giant Katydid in Everglades National Park on a given day, against under 5% in January, April and July–October, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Giant Katydid sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 2 parks where we can rate Giant Katydid sightings, Everglades National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Big Cypress National Preserve (United States, about 10%).
Same family: Tettigoniidae
The closest relatives of the Giant Katydid that you can see in Everglades National Park (family Tettigoniidae, Katydids) are Broad-Tipped Conehead (about 10%), Narrow-Beaked Katydid (about 10%) and Florida Oblong-Winged Katydid (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Giant Katydid is recorded against all the insects logged in Everglades National Park (13 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
