Hydriomena arida
In 3 days ~30% in a week ~60%
Hydriomena arida, also known as the Gunnera carpet moth, is a species of moth in the family Geometridae. It was first described by Arthur Gardiner Butler in 1879. This species is endemic to New Zealand. It is found in both the South and Stewart Islands where it inhabits native forest. It has been observed at up to 3000 ft. Larvae feed on Gunnera monoica. Adults of this species are on the wing from December until February and are nocturnal and attracted to light. This species is regarded as being uncommon.
This species was first described by Arthur Gardiner Butler in 1879 using specimens collected by Frederick Wollaston Hutton in Dunedin and named Melanthia arida. In 1883 Edward Meyrick, thinking he was describing a new species, named this species as Cidaria chaotica. Meyrick synonymised this name into Cidaria arida in 1884. George Hudson discussed and illustrated this species under the name Hydriomena arida in both his 1898 book New Zealand moths and butterflies (Macro-lepidoptera) and his 1928 book The butterflies and moths of New Zealand. It has been hypothesised that species belongs to another genus and so this species is also currently known as Hydriomena (s.l.... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rakiura National Park | 🇳🇿 New Zealand | |
| 2 | Fiordland National Park | 🇳🇿 New Zealand |
With luck
About 10% of wildlife watchers report a Gunnera Carpet sighting in Rakiura National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 68th most-seen of the 118 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.
July
In that month about 30% of wildlife watchers report a Gunnera Carpet in Rakiura National Park on a given day, against under 5% in February–March, May–June, August–September and December, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Gunnera Carpet 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.
Yes
Of the 2 parks where we can rate Gunnera Carpet sightings, Rakiura National Park has the highest daily chance: about 10%. Next come Fiordland National Park (New Zealand, about 10%).
GBIF citizen-science records
It is estimated from how often the Gunnera Carpet is recorded against all the insects logged in Rakiura National Park (9 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.
