Achyra rantalis
In 3 days ~10% in a week ~30%
Achyra rantalis, the garden webworm, is a moth of the family Crambidae described by Achille Guenée in 1854. It is found in North America, where it has been recorded from Maine to southern Quebec and Ontario, south to Florida and Mexico. It has also been recorded in Iowa, Colorado, California, and the West Indies. Its habitat consists of fields and gardens.
The wingspan is 17–23 millimetres (0.67–0.91 in). There may be up to four generations per year in the south. The larvae feed on the leaves of various low-growing plants, including alfalfa, beans, clover, corn, cotton, peas and strawberries. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Padre Island National Seashore | 🇺🇸 United States | |
| 2 | Big Bend National Park | 🇺🇸 United States | |
| 3 | Joshua Tree National Park | 🇺🇸 United States | |
| 4 | Saguaro National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Dallas | 🇺🇸 United States | |
| 3 | San Antonio | 🇺🇸 United States | |
| 4 | Ciudad Juárez | 🇲🇽 México | |
| 5 | Houston | 🇺🇸 United States | |
| 6 | Detroit | 🇺🇸 United States | |
| 7 | Boston | 🇺🇸 United States | |
| 8 | Toronto | 🇨🇦 Canada | |
| 9 | Mesa | 🇺🇸 United States | |
| 10 | Torreón | 🇲🇽 México |
Rare
Under 5% of wildlife watchers report a Garden Webworm Moth sighting in Saguaro National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 211th most-seen of the 354 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May–June and August–October
In those months about 10% of wildlife watchers report a Garden Webworm Moth in Saguaro National Park on a given day, against under 5% in July and November–April, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Garden Webworm Moth sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
4th of 4
Of the 4 parks where we can rate Garden Webworm Moth sightings, Saguaro National Park ranks 4th at under 5%. The best odds are in Padre Island National Seashore (United States, about 10%), Big Bend National Park (United States, about 10%) and Joshua Tree National Park (United States, under 5%).
Same family: Crambidae
The closest relatives of the Garden Webworm Moth that you can see in Saguaro National Park (family Crambidae, Crambid Snout Moths) are Desert Bantam (about 10%), Jalisco Petrophila (about 10%) and Hawaiian Beet Webworm Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Garden Webworm Moth is recorded against all the insects logged in Saguaro National Park (9 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.
