Parapoynx obscuralis
In 3 days ~10% in a week ~20%
Parapoynx obscuralis, the obscure pondweed moth, American china-mark or vallisneria leafcutter, is a moth in the family Crambidae. It was described by Augustus Radcliffe Grote in 1881. It is found in North America, where it has been recorded from Nova Scotia to Florida, west to Texas and north to Wisconsin and Ontario. It is also found in Great Britain, where it is naturalised in aquatic nurseries through accidental introduction.
The larvae are aquatic and feed on various aquatic plants, including Vallisneria, Potamogeton and Nuphar species. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Obscure Pondweed Moth sighting in Montreal on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 364th most-seen of the 926 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.
August
In that month about 10% of wildlife watchers report an Obscure Pondweed Moth in Montreal on a given day, against under 5% in September to July, the lowest months.
Yes
Of the 3 cities where we can rate Obscure Pondweed Moth sightings, Montreal has the highest daily chance: under 5%. Next come Austin (United States, under 5%) and Chicago (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Obscure Pondweed Moth is recorded against all the insects logged in Montreal (20 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.
