Ocellated Shield Bug

Ocellated Shield Bug

Cantao ocellatus

Daily sighting probability ~10% · With luck
at Hong Kong

In 3 days ~30% in a week ~50%

96 Verified sightings at Hong Kong
98 In all 3 parks From 2019 to 2026
December Best month
☀️ Diurnal When it's spotted

About the Ocellated Shield Bug

Cantao ocellatus is a species of shield bug in the family Scutelleridae found across Asia. Cantao ocellatus is reddish or ochre in overall colour it has dark legs and bluish black antennae. A dark bluish black stripe is present along the central line of the head. The pronotum sometimes has two black spots on the front margin and sometimes has eight spots. The scutellum has eight or six black spots of variable size but with yellowish borders. The lateral angle of the pronotum is elongated into a curved spine but this can be much reduced. A distinctive symbiotic bacterial genus Sodalis from phylum Gammaproteobacteria is found in its midgut. Maternal care of eggs and nymphs has been noted in this species. The female stands over and covers the eggs after they are laid but eggs on the edge that she cannot cover are often parasitized by wasps.

Cantao ocellatus has been reported from the Indian Subcontinent into Southeast Asia and Papua New Guinea. It has also been reported from Japan and Zaire. Cantao ocellatus suck sap from a wide range of plants including Macaranga, Camellia sasanqua, Kigelia, Mallotus, Bischofia javanica... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Taroko National Park 🇹🇼 Taiwan
~30%
2 Cuc Phuong National Park 🇻🇳 Vietnam
~20%
3 Khao Yai National Park 🇹🇭 Thailand
~10%

Cities Where Found

# City Country Daily sighting probability
1 Taichung 🇹🇼 Taiwan
~10%
2 Zhuhai [Macau] 🇨🇳 China
~10%
3 Kunming 🇨🇳 China
~10%
4 Fuzhou 🇨🇳 China
~10%
5 Taipei 🇹🇼 Taiwan
~10%
6 Hong Kong 🇨🇳 China
~10%
7 Tuen Mun 🇨🇳 China
~10%
8 Kuala Lumpur 🇲🇾 Malaysia
~10%
9 Guangzhou 🇨🇳 China
~10%
10 Tainan 🇹🇼 Taiwan
~10%

Before you go

What are the chances of seeing an Ocellated Shield Bug in Hong Kong?

With luck

About 10% of wildlife watchers report an Ocellated Shield Bug sighting in Hong Kong on a given day, based on 96 verified sightings from GBIF citizen-science data. It is the 117th most-seen of the 1125 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.

When is the best time to see an Ocellated Shield Bug in Hong Kong?

November and December

In those months about 20% of wildlife watchers report an Ocellated Shield Bug in Hong Kong on a given day, against under 5% in March–April, July and September, the lowest months. Those are among Hong Kong's driest months, with about 30 mm of rain a month against 280 mm in June.

What time of day is best to see an Ocellated Shield Bug?

Between 8 and 11 am

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

Is Hong Kong the best place to see an Ocellated Shield Bug?

Among the best

Of the 15 cities where we can rate Ocellated Shield Bug sightings, Hong Kong ranks 6th at about 10%, level with the leaders once rounded. The best odds are in Taichung (Taiwan, about 10%), Zhuhai [Macau] (China, about 10%) and Kunming (China, about 10%).

Where does the Ocellated Shield Bug sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Ocellated Shield Bug is recorded against all the insects logged in Hong Kong (96 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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