Yellow-Spotted Longicorn Beetle

Yellow-Spotted Longicorn Beetle

Psacothea hilaris

Daily sighting probability ~20% · Possible
at Nanjing

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

33 Verified sightings at Nanjing
25 In 1 park From 2019 to 2026
June Best month
☀️ Diurnal When it's spotted

About the Yellow-Spotted Longicorn Beetle

Psacothea hilaris, the yellow spotted longicorn beetle, is a species of beetle in the family Cerambycidae. It was described by Francis Polkinghorne Pascoe in 1857. It is known from North Korea, China and Japan. It has been introduced to Italy. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Taroko National Park 🇹🇼 Taiwan
~20%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Nanjing 🇨🇳 China
~20%
2 Nagoya 🇯🇵 Japan
~10%
3 Naha 🇯🇵 Japan
~10%
4 Hangzhou 🇨🇳 China
~10%
5 Taipei 🇹🇼 Taiwan
~10%
6 Shanghai 🇨🇳 China
~10%
7 Milan 🇮🇹 Italy
~10%
8 Kaohsiung 🇹🇼 Taiwan
~10%
9 Tokyo 🇯🇵 Japan
~10%
10 Taichung 🇹🇼 Taiwan
~10%

Before you go

What are the chances of seeing a Yellow-Spotted Longicorn Beetle in Nanjing?

Possible

About 20% of wildlife watchers report a Yellow-Spotted Longicorn Beetle sighting in Nanjing on a given day, based on 33 verified sightings from GBIF citizen-science data. It is the 28th 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 70%, if each day is a fresh chance.

When is the best time to see a Yellow-Spotted Longicorn Beetle in Nanjing?

June

In that month about 30% of wildlife watchers report a Yellow-Spotted Longicorn Beetle in Nanjing on a given day, against under 5% in November to April, the lowest months. That is one of Nanjing's wettest months, with about 180 mm of rain against 40 mm in December.

What time of day is best to see a Yellow-Spotted Longicorn Beetle?

Between 8 and 11 am

Across all the parks we cover, that three-hour window holds the most Yellow-Spotted Longicorn Beetle sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is Nanjing the best place to see a Yellow-Spotted Longicorn Beetle?

Yes

Of the 11 cities where we can rate Yellow-Spotted Longicorn Beetle sightings, Nanjing has the highest daily chance: about 20%. Next come Nagoya (Japan, about 10%) and Naha (Japan, about 10%).

Where does the Yellow-Spotted Longicorn Beetle sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Yellow-Spotted Longicorn Beetle is recorded against all the insects logged in Nanjing (33 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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