Troilus luridus
In 3 days ~10% in a week ~20%
Troilus luridus, also known as the bronze shieldbug, is a species of shield bug found in Europe. It was first described by the Danish zoologist Johan Christian Fabricius in 1775. Shieldbugs are generally phytophagous (i.e., feeding on plant sap) and some, including Troilus luridus, are also carnivorous and will eat the larvae of beetles, lepidoptera and sawflies.
Troilus luridus is a large predatory bronze-brown shieldbug in the family Pentatomidae. It measures about 10 to 12 mm in length and has a distinctive, orange band on the penultimate antennal segment. The legs are brown and the scutellum lacks an orange tip. Live prey is essential to development and adults walk slowly about in search of their prey; usually larvae, but sometimes the adults of beetles, butterflies and moths. They hold the prey at the tip of its rostrum using their mandibular and maxillary stylets which spread out within the prey cutting away at tissues.
The bugs overwinter as adults and, depending on temperature, emerge in April. Eggs are laid in May and June and are laid in batches, initially around 21, with the number reducing with each batch, until they are only laid in ones and twos. At... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom | |
| 4 | Moscow | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Bronze Shield Bug sighting in Pyrénées National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 940th most-seen of the 1277 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
April, October and December
In those months about 10% of wildlife watchers report a Bronze Shield Bug in Pyrénées National Park on a given day, against under 5% in January–March, May–September and November, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Bronze Shield 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.
3rd of 3
Of the 3 parks where we can rate Bronze Shield Bug sightings, Pyrénées National Park ranks 3rd at under 5%. The best odds are in Snowdonia National Park (United Kingdom, about 10%) and Bavarian Forest National Park (Germany, under 5%).
Same family: Pentatomidae
The closest relatives of the Bronze Shield Bug that you can see in Pyrénées National Park (family Pentatomidae, Stink Bugs) are European Striped Shield Bug (about 20%), Black-Shouldered Shieldbug (about 20%) and Forest Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bronze Shield Bug is recorded against all the insects logged in Pyrénées 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.
