Marathyssa inficita
In 3 days ~20% in a week ~30%
Marathyssa inficita, the dark marathyssa, is a moth in the family Euteliidae. The species was first described by Francis Walker in 1865. It is found in North America. The MONA or Hodges number for Marathyssa inficita is 8955. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada | |
| 2 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Dark Marathyssa Moth sighting in Big Bend National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 221st most-seen of the 329 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.
September
In that month about 20% of wildlife watchers report a Dark Marathyssa Moth in Big Bend National Park on a given day, against under 5% in August and October–May, the lowest months. That is one of Big Bend National Park's wettest months, with about 50 mm of rain against 10 mm in April.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Dark Marathyssa Moth sightings with a recorded time, and about 9 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 Dark Marathyssa Moth sightings, Big Bend National Park has the highest daily chance: about 10%. Next come Shenandoah National Park (United States, under 5%).
Same order: Lepidoptera
The closest relatives of the Dark Marathyssa Moth that you can see in Big Bend National Park (order Lepidoptera, Butterflies and Moths) are Empress Leilia (about 40%), Sleepy Orange (about 30%) and Reakirt's Blue (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dark Marathyssa Moth is recorded against all the insects logged in Big Bend 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.
