Semiothisa arenisca
In 3 days ~60% in a week ~90%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Main Ridge Forest Reserve | 🇹🇹 Trinidad and Tobago |
More parks will be added in future updates.
Possible
About 30% of wildlife watchers report a Semiothisa arenisca sighting in Main Ridge Forest Reserve on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 46th most-seen of the 346 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
February
In that month about 50% of wildlife watchers report a Semiothisa arenisca in Main Ridge Forest Reserve on a given day, against under 5% in March–May, September and November, the lowest months. That is one of Main Ridge Forest Reserve's driest months, with about 60 mm of rain against 230 mm in October.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Semiothisa arenisca sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Only Main Ridge Forest Reserve, in our data
Main Ridge Forest Reserve is the only park on Wallace's Line with enough records to rate Semiothisa arenisca sightings: about 30% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Semiothisa arenisca that you can see in Main Ridge Forest Reserve (family Geometridae, Geometer Moths) are Hübner's Olive (about 40%), Idaea cellifimbria (about 40%) and Parilexia nicetaria (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Semiothisa arenisca is recorded against all the insects logged in Main Ridge Forest Reserve (21 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.
