Sumitrosis inaequalis
In 3 days ~10% in a week ~20%
Sumitrosis inaequalis is a species of leaf beetle in the family Chrysomelidae. It is found in Central America and North America, where it has been recorded from Canada (Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario, Quebec, Prince Edward Island, Saskatchewan) and the United States (Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming).
Adults reach a length of about 3.4-4.2 mm. Adults are very variable in colour. The pronotum might be pale or maculate with piceous. The elytra range from pale yellow with faint black markings to black with faint yellow spots.
The species is a leaf miner on hosts such as Eurybia divaricata, Symphyotrichum cordifolium, and Ambrosia artemisiifolia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Acadia National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Montreal | 🇨🇦 Canada | |
| 3 | Toronto | 🇨🇦 Canada | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Philadelphia | 🇺🇸 United States | |
| 6 | Austin | 🇺🇸 United States | |
| 7 | New York City | 🇺🇸 United States | |
| 8 | Dallas | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Sumitrosis inaequalis sighting in Montreal on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 384th most-seen of the 926 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 Sumitrosis inaequalis in Montreal on a given day, against under 5% in July to May, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Sumitrosis inaequalis sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 8
Of the 8 cities where we can rate Sumitrosis inaequalis sightings, Montreal ranks 2nd at under 5%. The best odds are in Boston (United States, about 10%).
Same family: Chrysomelidae
The closest relatives of the Sumitrosis inaequalis that you can see in Montreal (family Chrysomelidae, Leaf Beetles) are Swamp Milkweed Leaf Beetle (about 10%), Striped Cucumber Beetle (about 10%) and Spotted Cucumber Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sumitrosis inaequalis is recorded against all the insects logged in Montreal (18 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.
