Anastrangalia laetifica
In 3 days ~10% in a week ~20%
Anastrangalia laetifica, the dimorphic flower longhorn, is a species of beetle from family Cerambycidae found in Canada, United States, and Mexico. The male elytras are all black, while the females have 4 black dots on their red coloured elytra. They feed on Frasera albicaulis. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yosemite National Park | 🇺🇸 United States | |
| 2 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Dimorphic Flower Longhorn Beetle sighting in Portland on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 235th most-seen of the 507 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.
June
In that month about 10% of wildlife watchers report a Dimorphic Flower Longhorn Beetle in Portland on a given day, against under 5% in July to May, the lowest months. That is one of Portland's driest months, with about 55 mm of rain against 250 mm in December.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Dimorphic Flower 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 Portland, in our data
Portland is the only city on Wallace's Line with enough records to rate Dimorphic Flower Longhorn Beetle sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Cerambycidae
The closest relatives of the Dimorphic Flower Longhorn Beetle that you can see in Portland (family Cerambycidae, Longhorn Beetles) are Banded Alder Borer (about 10%), Xestoleptura crassipes (about 10%) and Locust Borer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dimorphic Flower Longhorn Beetle is recorded against all the insects logged in Portland (22 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.
