Ophiusa tirhaca
In 3 days ~20% in a week ~30%
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 |
With luck
About 10% of wildlife watchers report a Green Drab sighting in Perth on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 115th most-seen of the 275 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.
April–July and December–February
In those months about 10% of wildlife watchers report a Green Drab in Perth on a given day, against under 5% in March and August–November, the lowest months.
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 6 cities where we can rate Green Drab sightings, Perth ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Tel Aviv (Israel, about 10%).
GBIF citizen-science records
It is estimated from how often the Green Drab is recorded against all the insects logged in Perth (19 verified sightings), 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.
