Blepharida rhois
In 3 days ~20% in a week ~40%
The sumac flea beetle, Blepharida rhois, is most commonly found in North America and is a member of the herbivorous beetle family, Chrysomelidae. More specifically, this beetle is part of the Alticinae subfamily, a highly diverse subfamily that includes more than 1000 species in 550 genera. Members of the Alticinae subfamily are distinguished by their enlarged metafemora and their ability to jump up to 100 times their length. This gives the beetle the ability to catapult jump in order to escape approaching predators. This ability has led to the common name of “flea beetle.” Both larvae and adults are typically a quarter of an inch long. While adults are cream colored with irregular reddish patterns, larvae are typically gray with yellow stripes.
This beetle primarily feeds on the external surface of Rhus leaves. Through this diet, larvae are able to digest useful chemical compounds that can be used as a form of chemical defense against predators. This defense system is contained in a fecal shield, a key characteristic of this beetle’s larvae. Because Rhus plants are necessary for the production of this chemical defense system, B. rhois’ geographic distribution often correlates with the presence of Rhus plants. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Salt Lake City | 🇺🇸 United States | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 3 | Dallas | 🇺🇸 United States | |
| 4 | Boston | 🇺🇸 United States | |
| 5 | Chicago | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Sumac Flea Beetle sighting in Minneapolis [Saint Paul] on a given day, based on 64 verified sightings from GBIF citizen-science data. It is the 129th most-seen of the 672 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.
July to October
In those months about 10% of wildlife watchers report a Sumac Flea Beetle in Minneapolis [Saint Paul] on a given day, against under 5% in November to June, the lowest months.
Among the best
Of the 5 cities where we can rate Sumac Flea Beetle sightings, Minneapolis [Saint Paul] ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Salt Lake City (United States, about 10%).
Same family: Chrysomelidae
The closest relatives of the Sumac Flea Beetle that you can see in Minneapolis [Saint Paul] (family Chrysomelidae, Leaf Beetles) are Swamp Milkweed Leaf Beetle (about 10%), Spotted Cucumber Beetle (about 10%) and Lily Leaf Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sumac Flea Beetle is recorded against all the insects logged in Minneapolis [Saint Paul] (64 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.
