Ursine Spurleg Lady Beetle © Gillian Mastromatteo

Ursine Spurleg Lady Beetle © Josh Lincoln

Ursine Spurleg Lady Beetle © Nathaniel Sharp

The Ursine Spurleg Lady Beetle is also known as the Orange-spotted Lady Beetle, aptly named for their characteristic orange spots. This species is native to North America and is often found near milkweed plants. It is most often seen from May to July.

Status

Native

The Ursine Spurleg Lady Beetle is listed as Apparently Secure in New Brunswick, Ontario, and Saskatchewan; Secure in Nova Scotia; and Vulnerable in Manitoba. No status has been determined federally or within individual states in the United States.

At least one peer-reviewed article states that this species is in decline. Declines have been attributed to the introduction of non-native lady beetle species. It is unknown how much of this decline is directly caused by non-native lady beetle introductions, how much is caused by habitat loss, or if the combination of these factors is causing decline.

Last Seen

2020

Fun Fact

“Ursina” in its scientific name means “resembling a bear”.

Identification

The Ursine Spurleg Lady Beetle is 3 to 4.5 mm in length.

Habitat

Often associated with milkweed. Appears to utilize deciduous forest and crops or successional fields near deciduous forests as habitat.

General Range

Found across the eastern and midwestern U.S., ranging north to Newfoundland and Saskatchewan and south to South Carolina and Arkansas.

Food

The Ursine Spurleg Lady Beetle larvae prey on scale insects and aphids in ant nests. Adults have been found to be associated with tree scale insects, presumably preying on the scale insects. However, not much is known about this species’ phenology.

Life Cycle

Can be found March through October, with the highest occurrence rate appearing to be in June. Nymphs live below ground and are associated with ants.

More Information

You can find more information about Ursine Spurleg Lady Beetles using the following links:

Vermont Distribution

Visit the iNaturalist Observation Map and Observation Records to find out where Ursine Spurleg Lady Beetles have been seen in Vermont.