Anastrangalia sanguinolenta
In 3 days ~10% in a week ~20%
Anastrangalia sanguinolenta, the blood-red longhorn beetle, is a species of flower longhorn beetles belonging to the family Cerambycidae, subfamily Lepturinae. This beetle is a common species present in most of Europe and in the Near Eastern countries such as Caucasus, Transcaucasia, and Turkey, where they mainly inhabit mountainous coniferous forests.
Head, antennae and pronotum are black in both sexes, while elytra are reddish-brown in the female and yellowish-brown in the male. The adults grow up to 8–13 millimetres (0.31–0.51 in) and can be encountered from May through August, completing their life cycle in 2–3 years.
The larvae develop at the expense of various species of conifers, mainly within dead wood of Pinus sylvestris and Picea abies. The adults visit flowers for nectar and pollen. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Aigüestortes National Park | 🇪🇸 Spain | |
| 2 | Vanoise National Park | 🇫🇷 France | |
| 3 | Triglav National Park | 🇸🇮 Slovenia | |
| 4 | Tatra National Park | 🇸🇰 Slovakia | |
| 5 | Mercantour National Park | 🇫🇷 France | |
| 6 | Pyrénées National Park | 🇫🇷 France | |
| 7 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 8 | Cévennes National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vienna | 🇦🇹 Austria |
Rare
Under 5% of wildlife watchers report a Blood-Red Longhorn Beetle sighting in Vienna on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 1090th most-seen of the 1406 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Blood-Red Longhorn Beetle in Vienna on a given day, so our monthly data shows no clear season.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Blood-Red Longhorn Beetle sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Vienna, in our data
Vienna is the only city on Wallace's Line with enough records to rate Blood-Red Longhorn Beetle sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Cerambycidae
The closest relatives of the Blood-Red Longhorn Beetle that you can see in Vienna (family Cerambycidae, Longhorn Beetles) are Alpine Longhorn Rosalia (about 10%), Common Grammoptera (about 10%) and Dorcadion aethiops (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blood-Red Longhorn Beetle is recorded against all the insects logged in Vienna (9 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.
