Common Straight Swift

Common Straight Swift

Parnara guttatus

Daily sighting probability ~10% · With luck
at Seoul

In 3 days ~40% in a week ~70%

112 Verified sightings at Seoul
October Best month
☀️ Diurnal When it's spotted

About the Common Straight Swift

Parnara guttata, the common straight swift, is a butterfly of the family Hesperiidae. It is found in the Indomalayan realm, Amur (Russian Far East), eastern China, Japan, Taiwan, the Philippines, and Korea. Its wingspan is about 40 mm.

Common straight swift larvae feed on various grasses, including rice. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability

More parks will be added in future updates.

Cities Where Found

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

Before you go

What are the chances of seeing a Common Straight Swift in Seoul?

With luck

About 10% of wildlife watchers report a Common Straight Swift sighting in Seoul on a given day, based on 112 verified sightings from GBIF citizen-science data. It is the 23rd most-seen of the 525 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.

When is the best time to see a Common Straight Swift in Seoul?

October

In that month about 40% of wildlife watchers report a Common Straight Swift in Seoul on a given day, against under 5% in March–July and December–January, the lowest months. That is one of Seoul's driest months, with about 55 mm of rain against 360 mm in July.

What time of day is best to see a Common Straight Swift?

Between 2 and 5 pm

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

Is Seoul the best place to see a Common Straight Swift?

6th of 19

Of the 19 cities where we can rate Common Straight Swift sightings, Seoul ranks 6th at about 10%. The best odds are in Tokyo (Japan, about 20%), Busan (South Korea, about 20%) and Daegu (South Korea, about 20%).

Where does the Common Straight Swift sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Common Straight Swift is recorded against all the insects logged in Seoul (112 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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