Ophiusa tirhaca
In 3 days ~10% in a week ~20%
Ophiusa tirhaca, the green drab, is a moth of the family Erebidae. The species was first described by Pieter Cramer in 1777. It is found in southern Europe, Africa, Australia and the southern parts of Asia. The wingspan is about 50 mm.
The larvae feed on heath, Pistacia lentiscus, Pistacia terebinthus, Cotinus coggygria, Rhus coriaria, Rhus cotinus, Cistus, Eucalyptus, Osyris, Viburnum and Pelargonium. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kruger National Park | 🇿🇦 South Africa | |
| 2 | Table Mountain National Park | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Green Drab sighting in Table Mountain National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 180th most-seen of the 344 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Green Drab in Table Mountain National Park on a given day, so our monthly data shows no clear season.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Green Drab sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Among the best
Of the 2 parks where we can rate Green Drab sightings, Table Mountain National Park ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Kruger National Park (South Africa, under 5%).
Same family: Erebidae
The closest relatives of the Green Drab that you can see in Table Mountain National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Brown Tricolour Tiger Moth (about 20%), Zebra Ermine (about 10%) and Heady Maiden (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Green Drab is recorded against all the insects logged in Table Mountain National Park (13 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.
