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Elousa mima
In 3 days ~30% in a week ~50%
Heteranassa is a monotypic genus of moths in the family Erebidae described by J. B. Smith in 1899. Its only species, Heteranassa mima, was first described by Leon F. Harvey in 1876. It is found in warm, arid habitats in North America from California to Texas, northward to Oklahoma, and south as far as Oaxaca in Mexico.
The length of the forewings is 9.7–14.9 mm for males and 11–16.7 mm for females. The antemedial line on the forewings is pointed apically on the anal vein and the medial line is black, pointed mesially on the radial, the cubital, and anal veins. The post medial line is black, outlining the apical half of the discal area and the subterminal line is brown, jagged, bordering the lighter colored terminal area. The terminal line is scalloped outwardly at the termini of the veins and the apical margin is traced in lighter coloration. The reniform spot markings range from a white spot, to a thin white vertical dash, to a barely visible dash, or black. The hindwing ground color is gray white, darker shading distally. The terminal line is black, scalloped apically at the termini of the veins. There are multiple generations per year, with adults on wing year round.
The larvae feed on Prosopis and Acacia species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Saguaro National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report an Elousa mima sighting in Big Bend National Park on a given day, based on 20 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 96th most-seen of the 329 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
April and May
In those months about 20% of wildlife watchers report an Elousa mima in Big Bend National Park on a given day, against under 5% in June and September–February, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Elousa mima sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 2 parks where we can rate Elousa mima sightings, Big Bend National Park has the highest daily chance: about 10%. Next come Saguaro National Park (United States, under 5%).
Same family: Erebidae
The closest relatives of the Elousa mima that you can see in Big Bend National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Bird Toxonprucha (about 20%), Lophocampa bicolor (about 10%) and Paler Graphic (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Elousa mima is recorded against all the insects logged in Big Bend National Park (20 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.
