Cermatulus nasalis
In 3 days ~30% in a week ~50%
Cermatulus nasalis is a species of predatory shield bug in the family Pentatomidae. It is commonly known as the brown soldier bug or glossy shield bug and is native to Australia and New Zealand. The species was first identified by John Obadiah Westwood in 1837, who described the species as Aelia nasalis. In 1951 William Dallas created the genus Cermatulus, naming Cermatulus nasalis as the type species. The species has three known subspecies. C. turbotti, endemic to Manawatāwhi / Three Kings Islands northwest of New Zealand, was described as a species in 1950 by Thomas E. Woodward. Woodward later revised this designation in 1952, describing it as a subspecies of Cermatulus nasalis, however some authors such as Donald B. Thomas consider this to be a separate species.
The head is brown and has a bluntly rounded snout. The prothorax is broadly triangular and marked with fine perforations... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Arthur's Pass National Park | 🇳🇿 New Zealand | |
| 2 | Kosciuszko National Park | 🇦🇺 Australia | |
| 3 | Egmont National Park | 🇳🇿 New Zealand | |
| 4 | Fiordland National Park | 🇳🇿 New Zealand | |
| 5 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Brown Soldier Bug sighting in Egmont National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 99th most-seen of the 191 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.
April and November
In those months about 20% of wildlife watchers report a Brown Soldier Bug in Egmont National Park on a given day, against under 5% in January–February and May–October, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Brown Soldier Bug sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 5 parks where we can rate Brown Soldier Bug sightings, Egmont National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Arthur's Pass National Park (New Zealand, about 10%) and Kosciuszko National Park (Australia, about 10%).
Same family: Pentatomidae
The closest relatives of the Brown Soldier Bug that you can see in Egmont National Park (family Pentatomidae, Stink Bugs) are Southern Green Stink Bug (about 10%) and Glaucias amyota (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown Soldier Bug is recorded against all the insects logged in Egmont National Park (7 verified sightings from 2019 to 2026), 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.
