Cyphostethus tristriatus
In 3 days ~20% in a week ~40%
The juniper shield bug (Cyphostethus tristriatus), (family: Acanthosomatidae), is a large (9–10.5 mm) green shield bug with distinctive pinkish-red markings on the corium. The bug's traditional foodplant is juniper, with the larvae feeding on juniper berries. It has also adapted to use Lawson cypress(Chamaecyparis spp.) as a host. In the United Kingdom it was formerly scarce and restricted largely to southern juniper woodlands but in recent years it has become common across southern and central England as a result of the widespread garden planting of juniper and cypress. Recent discoveries on stands of juniper in northern England and Scotland suggest that the range of the species may be extending.
The juniper shield bug is active for most of the year apart from the coldest months. It overwinters as an adult, emerging to mate in the early spring. New adults may be found from late August onwards. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Birmingham | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom | |
| 3 | Brussels | 🇧🇪 Belgium | |
| 4 | Copenhagen | 🇩🇰 Denmark | |
| 5 | Vancouver | 🇨🇦 Canada | |
| 6 | Warsaw | 🇵🇱 Poland | |
| 7 | Essen | 🇩🇪 Germany | |
| 8 | Paris | 🇫🇷 France | |
| 9 | Manchester | 🇬🇧 United Kingdom | |
| 10 | Hamburg | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Juniper Shield Bug sighting in Birmingham on a given day, based on 35 verified sightings from GBIF citizen-science data. It is the 228th most-seen of the 811 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February–May and July–November
In those months about 10% of wildlife watchers report a Juniper Shield Bug in Birmingham on a given day, against under 5% in June and December–January, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Juniper Shield Bug sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Yes
Of the 14 cities where we can rate Juniper Shield Bug sightings, Birmingham has the highest daily chance: about 10%. Next come London (United Kingdom, about 10%) and Brussels (Belgium, about 10%).
Same family: Acanthosomatidae
The closest relatives of the Juniper Shield Bug that you can see in Birmingham (family Acanthosomatidae, Shield Bugs) are Hawthorn Shield Bug (about 20%), Birch Shield Bug (about 20%) and Parent Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Juniper Shield Bug is recorded against all the insects logged in Birmingham (35 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.
