Microtheoris ophionalis
In 3 days ~10% in a week ~20%
Microtheoris ophionalis, the yellow-veined moth, is a moth in the family Crambidae. It was described by Francis Walker in 1859. It is found from southern Canada, through the United States and Mexico to South America. The length of the forewings 5.5–7 mm. Adults are on wing from May to October in the northern part of the range. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Saguaro National Park | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Yellow-Veined Moth sighting in Saguaro National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 248th 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 20%, if each day is a fresh chance.
June and September
In those months about 10% of wildlife watchers report a Yellow-Veined Moth in Saguaro National Park on a given day, against under 5% in July–August and October–May, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Yellow-Veined 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.
2nd of 2
Of the 2 parks where we can rate Yellow-Veined Moth sightings, Saguaro National Park ranks 2nd at under 5%. The best odds are in Big Bend National Park (United States, about 10%).
Same family: Crambidae
The closest relatives of the Yellow-Veined 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 Yellow-Veined Moth is recorded against all the insects logged in Saguaro 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.
