Japanese Common Grass Yellow

Japanese Common Grass Yellow

Eurema mandarina

Daily sighting probability ~10% · With luck
at Nanjing

In 3 days ~40% in a week ~60%

29 Verified sightings at Nanjing
15 In all 2 parks From 2019 to 2026
December Best month
☀️ Diurnal When it's spotted

About the Japanese Common Grass Yellow

Eurema mandarina, also known by its common name Japanese common grass yellow, is a species from the genus Eurema. It is a coliadine butterfly. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Nikko National Park 🇯🇵 Japan
~20%
2 Taroko National Park 🇹🇼 Taiwan
~10%

Cities Where Found

# City Country Daily sighting probability
1 Nagoya 🇯🇵 Japan
~30%
2 Osaka 🇯🇵 Japan
~20%
3 Suzhou 🇨🇳 China
~20%
4 Tokyo 🇯🇵 Japan
~20%
5 Nanjing 🇨🇳 China
~10%
6 Fukuoka 🇯🇵 Japan
~10%
7 Sendai 🇯🇵 Japan
~10%
8 Shanghai 🇨🇳 China
~10%
9 Seoul 🇰🇷 South Korea
~10%

Before you go

What are the chances of seeing a Japanese Common Grass Yellow in Nanjing?

With luck

About 10% of wildlife watchers report a Japanese Common Grass Yellow sighting in Nanjing on a given day, based on 29 verified sightings from GBIF citizen-science data. It is the 36th most-seen of the 272 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.

When is the best time to see a Japanese Common Grass Yellow in Nanjing?

December

In that month about 30% of wildlife watchers report a Japanese Common Grass Yellow in Nanjing on a given day, against under 5% in January and February, the lowest months. That is one of Nanjing's driest months, with about 40 mm of rain against 240 mm in July.

What time of day is best to see a Japanese Common Grass Yellow?

Between 1 and 4 pm

Across all the parks we cover, that three-hour window holds the most Japanese Common Grass Yellow sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Is Nanjing the best place to see a Japanese Common Grass Yellow?

5th of 9

Of the 9 cities where we can rate Japanese Common Grass Yellow sightings, Nanjing ranks 5th at about 10%. The best odds are in Nagoya (Japan, about 30%), Osaka (Japan, about 20%) and Suzhou (China, about 20%).

Which relatives of the Japanese Common Grass Yellow live in Nanjing?

Same family: Pieridae

The closest relatives of the Japanese Common Grass Yellow that you can see in Nanjing (family Pieridae, Whites, Yellows, and Sulphurs) are Pieris latouchei (about 30%), Small White (about 10%) and Indian Cabbage White (about 10%), with each one's daily chance of a sighting.

Where does the Japanese Common Grass Yellow sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Japanese Common Grass Yellow is recorded against all the insects logged in Nanjing (29 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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