Parnara guttatus
In 3 days ~50% in a week ~80%
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 →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Common Straight Swift sighting in Nagoya on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 52nd most-seen of the 195 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
September
In that month about 50% of wildlife watchers report a Common Straight Swift in Nagoya on a given day, against under 5% in October to July, the lowest months. That is one of Nagoya's wettest months, with about 220 mm of rain against 75 mm in January.
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.
Among the best
Of the 19 cities where we can rate Common Straight Swift sightings, Nagoya ranks 4th at about 20%, level with the leaders once rounded. The best odds are in Tokyo (Japan, about 20%), Busan (South Korea, about 20%) and Daegu (South Korea, about 20%).
Same family: Hesperiidae
The closest relatives of the Common Straight Swift that you can see in Nagoya (family Hesperiidae, Skippers) are Small Branded Swift (about 20%) and Japanese Dart (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Straight Swift is recorded against all the insects logged in Nagoya (17 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.
