Orocrambus flexuosellus
In 3 days ~30% in a week ~60%
Orocrambus flexuosellus is a species of moth in the family Crambidae. It was first described by Edward Doubleday in 1843. O. flexuosellus is endemic to New Zealand. It has been recorded from the North Island, South Island and the Stewart Islands. The species' habitat consists of lowland to alpine grasslands.
The wingspan is 19–26 mm. Adults have been recorded on wing from November to February. Adults are nocturnal but are easily disturbed during daylight hours. The larvae are polyphagous, feeding on various grasses and sedges. Adults are attracted to light and have been collected via a mercury vapour light trap. The adult moths have been shown to pollinate Cassinia fulvida, Dracophyllum acerosum, Hoheria lyallii and Olearia virgata. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rakiura National Park | 🇳🇿 New Zealand | |
| 2 | Egmont National Park | 🇳🇿 New Zealand | |
| 3 | Arthur's Pass National Park | 🇳🇿 New Zealand | |
| 4 | Fiordland National Park | 🇳🇿 New Zealand | |
| 5 | Abel Tasman National Park | 🇳🇿 New Zealand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand |
With luck
About 10% of wildlife watchers report a Common Grass Moth sighting in Arthur's Pass National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 33rd most-seen of the 60 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
January and April
In those months about 20% of wildlife watchers report a Common Grass Moth in Arthur's Pass National Park on a given day, against under 5% in May to November, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Common Grass Moth sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
3rd of 5
Of the 5 parks where we can rate Common Grass Moth sightings, Arthur's Pass National Park ranks 3rd at about 10%. The best odds are in Rakiura National Park (New Zealand, about 20%) and Egmont National Park (New Zealand, about 10%).
Same family: Crambidae
The closest relatives of the Common Grass Moth that you can see in Arthur's Pass National Park (family Crambidae, Crambid Snout Moths) are Sod Webworm (about 30%), Stone Moth (about 20%) and Shining Scoparia (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Grass Moth is recorded against all the insects logged in Arthur's Pass 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.
