Lobocleta ossularia
In 3 days ~20% in a week ~40%
Lobocleta ossularia, the drab brown wave moth, is a moth in the family Geometridae. It is found in North America, where it has been recorded from California to Florida, north in the east to New York and Illinois. The wingspan is 13–19 mm. Adults are on wing from June to September in California.
The larvae feed on Stellaria media, Galium species and Fragaria chiloensis. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Drab Brown Wave sighting in Big Bend National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 204th 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 40%, if each day is a fresh chance.
November
In that month about 20% of wildlife watchers report a Drab Brown Wave in Big Bend National Park on a given day, against under 5% in January–March and May–August, the lowest months. That is one of Big Bend National Park's driest months, with about 10 mm of rain against 50 mm in September.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Drab Brown Wave 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.
Only Big Bend National Park, in our data
Big Bend National Park is the only park on Wallace's Line with enough records to rate Drab Brown Wave sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Drab Brown Wave that you can see in Big Bend National Park (family Geometridae, Geometer Moths) are Dwarf Tawny Wave (about 10%), Bicolored Chloraspilates Moth (about 10%) and Idaea gemmata (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Drab Brown Wave is recorded against all the insects logged in Big Bend National Park (10 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.
