Libytheana carinenta
In 3 days ~20% in a week ~40%
Libytheana carinenta also called the American snout butterfly or common snout butterfly is a member of the subfamily Libytheinae in the brush-footed butterfly family, Nymphalidae. This species is found in both North and South America. The larval host plants are Celtis species on which the eggs are laid singly. Massive migrations of this species often attract attention in the Texas and Mexican newspapers.
Snout butterflies have prominent elongated mouthparts (labial palpi) which, in concert with the antennae, give the appearance of the petiole (stem) of a dead leaf. Snouts often take advantage of this superb camouflage by hanging upside down under a twig, making them nearly invisible. Wings are patterned black-brown with white and orange markings. The forewings have a distinctive squared off, hook-like (falcate) tip.
The caterpillars appear humpbacked, having a small head, swollen first and second abdominal segments, and a last abdominal segment which is tapered and rounded. They are dark green with yellow stripes along the top and sides of the body, and have two black tubercles on the top of the thorax. Their food is the common hackberry (Celtis occidentalis) tree... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saguaro National Park | 🇺🇸 United States | |
| 2 | Big Bend National Park | 🇺🇸 United States | |
| 3 | Congaree National Park | 🇺🇸 United States | |
| 4 | Point Pelee National Park | 🇨🇦 Canada | |
| 5 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | |
| 6 | Iguaçu National Park | 🇧🇷 Brazil | |
| 7 | Iguazú National Park | 🇦🇷 Argentina | |
| 8 | Joshua Tree National Park | 🇺🇸 United States | |
| 9 | Grand Canyon National Park | 🇺🇸 United States | |
| 10 | Iberá National Park | 🇦🇷 Argentina | |
| 11 | Death Valley National Park | 🇺🇸 United States | |
| 12 | Padre Island National Seashore | 🇺🇸 United States | |
| 13 | Zion National Park | 🇺🇸 United States | |
| 14 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 15 | Shenandoah National Park | 🇺🇸 United States | |
| 16 | Bahía de Loreto National Park | 🇲🇽 Mexico | |
| 17 | Calakmul Biosphere Reserve | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Torreón | 🇲🇽 México | |
| 2 | Monterrey | 🇲🇽 México | |
| 3 | Mesa | 🇺🇸 United States | |
| 4 | Austin | 🇺🇸 United States | |
| 5 | San Antonio | 🇺🇸 United States | |
| 6 | San Luis Potosí | 🇲🇽 México | |
| 7 | Toluca | 🇲🇽 México | |
| 8 | Phoenix | 🇺🇸 United States | |
| 9 | Cordoba | 🇦🇷 Argentina | |
| 10 | Dallas | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report an American Snout sighting in Las Vegas on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 54th most-seen of the 111 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.
December
In that month about 20% of wildlife watchers report an American Snout in Las Vegas on a given day, against under 5% in February to August, the lowest months. That is one of Las Vegas's wettest months, with about 20 mm of rain against almost none in June.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most American Snout sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
15th of 24
Of the 24 cities where we can rate American Snout sightings, Las Vegas ranks 15th at about 10%. The best odds are in Torreón (México, about 20%), Monterrey (México, about 20%) and Mesa (United States, about 20%).
Same family: Nymphalidae
The closest relatives of the American Snout that you can see in Las Vegas (family Nymphalidae, Brush-footed Butterflies) are Painted Lady (about 10%), Monarch (about 10%) and Queen (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the American Snout is recorded against all the insects logged in Las Vegas (12 verified sightings), 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.
