Piezodorus lituratus
In 3 days ~10% in a week ~20%
Piezodorus lituratus, the gorse shield bug, is a species of Pentatomidae, a family of shield bugs. These shield bugs live in many habitats where host plants are present. They prefer dry and warm habitats, especially with sandy soil. Piezodorus lituratus can reach a length of 10–13 mm (0.39–0.51 in). These large shieldbugs occur in two adult colour forms. In the spring when they emerge and mate they are predominantly green, while the new generation that appears in the late summer has purplish-red markings on the pronotum and corium. In autumn they have a much paler color, prior to hibernation they may become darker, but after hibernation they are bright green.
In Piezodorus lituratus var. alliaceus the corium shows a uniform yellow-greenish color. This species could be confused with the green shieldbug, Palomena prasina, but Piezodorus lituratus has a different habitat and red antennae.
Mating... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Aigüestortes National Park | 🇪🇸 Spain | |
| 4 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 5 | Pyrénées National Park | 🇫🇷 France | |
| 6 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 7 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 8 | Wadden Sea National Park | 🇩🇪 Germany |
Rare
Under 5% of wildlife watchers report a Gorse Shield Bug sighting in Porto on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 457th most-seen of the 498 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.
November
In that month about 10% of wildlife watchers report a Gorse Shield Bug in Porto on a given day, against under 5% in December to October, the lowest months. That is one of Porto's wettest months, with about 140 mm of rain against 15 mm in July.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Gorse Shield Bug sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
17th of 19
Of the 19 cities where we can rate Gorse Shield Bug sightings, Porto ranks 17th at under 5%. The best odds are in Kharkiv (Ukraine, about 10%), Birmingham (United Kingdom, about 10%) and Lyon (France, about 10%).
Same family: Pentatomidae
The closest relatives of the Gorse Shield Bug that you can see in Porto (family Pentatomidae, Stink Bugs) are European Striped Shield Bug (about 10%), Southern Green Stink Bug (about 10%) and Mottled Stink Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gorse Shield Bug is recorded against all the insects logged in Porto (5 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.
