Green Arches

Green Arches

Anaplectoides prasina

Daily sighting probability <5% · Rare
at Montreal

In 3 days ~10% in a week ~20%

13 Verified sightings at Montreal
33 In all 3 parks From 2019 to 2026
July Best month
☀️🌙 Day & Night When it's spotted

About the Green Arches

Anaplectoides prasina (green arches) is a species of moth of the family Noctuidae. It is found in both the Palearctic and Nearctic realms. Europe East to Siberia, Central Asia, Mongolia, China, Tibet, Korea and Japan. Also in Armenia and the Caucasus. In North America South Canada, Washington, Oregon, North Utah, New Mexico, New Jersey, Ohio, North Carolina.

The wingspan is 40–50 mm. Green, variously tinged with dark green or blackish; a green-tinged cream coloured or whitish blotch between the reniform stigma and outer line; stigmata dark green edged with black; inner and outer lines black, conversely edged with white, or whitish green, or concolorous; hindwing fuscous with a paler fringe. — In jaspidea Bkh. the pale patch beyond the reniform stigma is wanting and the stigmata are blacker; ab. pallida Tutt represents the extreme pale form, the whole wing being whitish green, in which the white patch beyond the reniform is absorbed, and the lines and shades are distinct only in the costal half of wing; — ab. suffusa Tutt is a rare form in which the green tints are superseded by red brown with the area round the stigmata blackish; — in albimacula... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Cairngorms National Park 🇬🇧 United Kingdom
~10%
2 Great Bear Rainforest 🇨🇦 Canada
~10%
3 Bavarian Forest National Park 🇩🇪 Germany
~10%

Cities Where Found

# City Country Daily sighting probability
1 Nizhny Novgorod 🇷🇺 Russia
<5%
2 Helsinki 🇫🇮 Finland
<5%
3 Montreal 🇨🇦 Canada
<5%
4 Moscow 🇷🇺 Russia
<5%
5 Toronto 🇨🇦 Canada
<5%

Before you go

What are the chances of seeing a Green Arches in Montreal?

Rare

Under 5% of wildlife watchers report a Green Arches sighting in Montreal on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 502nd 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.

When is the best time to see a Green Arches in Montreal?

July

In that month about 10% of wildlife watchers report a Green Arches in Montreal on a given day, against under 5% in August to June, the lowest months.

What time of day is best to see a Green Arches?

Between 7 and 10 am

Across all the parks we cover, that three-hour window holds the most Green Arches sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.

Is Montreal the best place to see a Green Arches?

Among the best

Of the 5 cities where we can rate Green Arches sightings, Montreal ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Nizhny Novgorod (Russia, under 5%) and Helsinki (Finland, under 5%).

Where does the Green Arches sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Green Arches is recorded against all the insects logged in Montreal (13 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.

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