Gelastocoris oculatus
In 3 days ~20% in a week ~40%
Gelastocoris oculatus, the big-eyed toad bug, is a species of toad bug in the family Gelastocoridae. It is found in Central America and North America. North of Mexico, it is found in 28 continental United States and 3 provinces of Canada. They are riparian insects that are found near the shores of freshwater lentic and lotic systems. They prefer damp substrates over saturated substrates. Their coloration, morphology, and hopping behavior resembles toads. Toad bugs use their cryptic coloration to blend in with the sand, soil, or pebble-rich substrate of their habitats to avoid predation. They are able to leap many times their body length to avoid predation, and can swim short distances. Both G. oculatus adults and nymphs capture smaller insects by jumping on them, and consume them with their piercing sucking mouthparts. Females lay their eggs under rocks or in sand or mud, and nymphs have 5 instars.
They are most active in spring to autumn and those in the northern range hibernate. Adults have been known to congregate sometimes. These two subspecies belong to the species Gelastocoris oculatus: Gelastocoris oculatus oculatus (Fabricius, 1798)
Gelastocoris oculatus... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Redwood National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 4 | Everglades National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | Dallas | 🇺🇸 United States | |
| 4 | Austin | 🇺🇸 United States | |
| 5 | Portland | 🇺🇸 United States | |
| 6 | Miami | 🇺🇸 United States | |
| 7 | Los Angeles | 🇺🇸 United States | |
| 8 | Houston | 🇺🇸 United States | |
| 9 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Big-Eyed Toad Bug sighting in Redwood National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 62nd most-seen of the 101 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April–May, July and September–October
In those months about 10% of wildlife watchers report a Big-Eyed Toad Bug in Redwood National Park on a given day, against under 5% in June, August and November–March, the lowest months. Those are among Redwood National Park's driest months, with about 85 mm of rain a month against 360 mm in January.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Big-Eyed Toad Bug sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 parks where we can rate Big-Eyed Toad Bug sightings, Redwood National Park has the highest daily chance: about 10%. Next come Shenandoah National Park (United States, about 10%) and Great Smoky Mountains National Park (United States, under 5%).
Same order: Hemiptera
The closest relatives of the Big-Eyed Toad Bug that you can see in Redwood National Park (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are North American Common Water Strider (about 20%) and Red-Cross Shield Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Big-Eyed Toad Bug is recorded against all the insects logged in Redwood National Park (7 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.
