Swamp Milkweed Leaf Beetle

Swamp Milkweed Leaf Beetle

Labidomera clivicollis

Daily sighting probability <5% · Rare
at Toronto

In 3 days ~10% in a week ~20%

42 Verified sightings at Toronto
56 In all 4 parks From 2019 to 2026
June Best month
☀️ Diurnal When it's spotted

About the Swamp Milkweed Leaf Beetle

The milkweed leaf beetle, or swamp milkweed leaf beetle (Labidomera clivicollis) is a species of leaf beetle from the family Chrysomelidae. It is found in eastern Northern America. These leaf beetles are round bodied, 8–11 mm in length, with a black head and pronotum and bright orange to yellow elytra with variable mottled black patches. L. clivicollis somewhat resembles a large ladybird beetle, and though it is not in the ladybird family (Coccinellidae), it is closely related (infraorder Cucujiformia). The larvae are light orange, white, or gray with a black pronotum and prominent black spots on the spiracles. They are grub-like and can be found feeding on milkweeds, especially swamp milkweed. Milkweed leaf beetle larvae can be distinguished from visually similar and closely related species by color, host plant, and number of spots.

There are a number of L. clivicollis host plants which are toxic to most herbivores. Many are in the dogbane family (Apocynaceae) including milkweeds, especially swamp milkweed (Asclepias incarnata) and common milkweed (Asclepias syriaca); swallow-wort (Cynanchum); twinevine (Funastrum).

The female lays small groups of orange... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Congaree National Park 🇺🇸 United States
~20%
2 Shenandoah National Park 🇺🇸 United States
~10%
3 Point Pelee National Park 🇨🇦 Canada
~10%
4 Cumbres de Monterrey National Park 🇲🇽 Mexico
<5%

Cities Where Found

# City Country Daily sighting probability
1 Montreal 🇨🇦 Canada
~10%
2 Minneapolis [Saint Paul] 🇺🇸 United States
~10%
3 Detroit 🇺🇸 United States
~10%
4 Baltimore 🇺🇸 United States
~10%
5 Washington 🇺🇸 United States
~10%
6 Houston 🇺🇸 United States
~10%
7 Chicago 🇺🇸 United States
~10%
8 Philadelphia 🇺🇸 United States
~10%
9 Dallas 🇺🇸 United States
<5%
10 Boston 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a Swamp Milkweed Leaf Beetle in Toronto?

Rare

Under 5% of wildlife watchers report a Swamp Milkweed Leaf Beetle sighting in Toronto on a given day, based on 42 verified sightings from GBIF citizen-science data. It is the 408th most-seen of the 1689 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.

When is the best time to see a Swamp Milkweed Leaf Beetle in Toronto?

Any time of year

In every month with enough records, under 5% of wildlife watchers report a Swamp Milkweed Leaf Beetle in Toronto on a given day, so our monthly data shows no clear season.

What time of day is best to see a Swamp Milkweed Leaf Beetle?

Between 11 am and 2 pm

Across all the parks we cover, that three-hour window holds the most Swamp Milkweed Leaf 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.

Is Toronto the best place to see a Swamp Milkweed Leaf Beetle?

14th of 15

Of the 15 cities where we can rate Swamp Milkweed Leaf Beetle sightings, Toronto ranks 14th at under 5%. The best odds are in Montreal (Canada, about 10%), Minneapolis [Saint Paul] (United States, about 10%) and Detroit (United States, about 10%).

Which relatives of the Swamp Milkweed Leaf Beetle live in Toronto?

Same family: Chrysomelidae

The closest relatives of the Swamp Milkweed Leaf Beetle that you can see in Toronto (family Chrysomelidae, Leaf Beetles) are Spotted Cucumber Beetle (about 10%) and Goldenrod Leaf Beetle (about 10%), with each one's daily chance of a sighting.

Where does the Swamp Milkweed Leaf Beetle sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Swamp Milkweed Leaf Beetle is recorded against all the insects logged in Toronto (42 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.

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