Cycloneda munda

(Say, 1835)

Polished Lady Beetle, Immaculate Ladybird Beetle

Cycloneda munda is a small lady beetle (Coccinellidae) native to eastern North America, commonly known as the polished lady beetle or . measure 3.7–5.7 mm and are distinguished by reddish-yellow and a black pronotum with pale lateral spots. The is an , with documented associations with oleander aphids (Aphis nerii) on milkweed plants. Its development and are influenced by plant species.

Cycloneda munda by (c) Katja Schulz, some rights reserved (CC BY), uploaded by Katja Schulz. Used under a CC-BY license.Cycloneda munda by (c) Victor Engel, some rights reserved (CC BY), uploaded by Victor Engel. Used under a CC-BY license.Cycloneda munda P1290206a by xpda. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Cycloneda munda: /saɪ.kləˈniː.də ˈmʌn.də/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from other North American lady beetles by the combination of unspotted reddish-yellow and black pronotum with pale lateral spots. Differs from Cycloneda sanguinea (spotless lady beetle) by pronotal pattern and geographic range. Smaller than many common Coccinellidae such as Harmonia axyridis or Coccinella septempunctata. The lack of elytral spots separates it from most Coccinella .

Images

Appearance

are small, measuring 3.7–5.7 mm in length. The pronotum is black with a pale lateral spot on each side. The (hardened forewings) are reddish-yellow and lack spots, contributing to the "" . The overall body form is typical of the Cycloneda: rounded and somewhat flattened.

Habitat

Associated with milkweed plants (Asclepias ) infested with aphids. Has been observed in gardens and natural areas where plants and prey occur. Specific microhabitat preferences beyond host plant associations are not well documented.

Distribution

Eastern North America. Documented from Canada (Manitoba, Nova Scotia, Ontario, Québec) and the United States. Distribution records suggest primary occurrence in the eastern and central regions of the continent.

Diet

of aphids, specifically documented feeding on oleander aphids (Aphis nerii). Preys on colonies on milkweed plants.

Host Associations

  • Asclepias curassavica - plant for prey (oleander aphids)
  • Asclepias incarnata - plant for prey (oleander aphids)
  • Asclepias syriaca - plant for prey (oleander aphids)
  • Asclepias tuberosa - plant for prey (oleander aphids)
  • Aphis nerii - preyoleander aphid

Ecological Role

of aphids on milkweed plants. Contributes to of in milkweed-associated . Part of the predator guild that includes other lady beetles, lacewings, flower fly larvae, and parasitic .

Human Relevance

Potential value in of pests in gardens and agricultural settings. Not documented as a household pest or nuisance .

Similar Taxa

  • Cycloneda sanguineaSimilar unspotted , but differs in pronotal pattern and primarily occurs in southern North America, Central America, and South America rather than eastern North America
  • Harmonia axyridisOverlaps in , but much larger (7–8 mm), highly variable in coloration and spot pattern, and introduced/non-native in North America
  • Coccinella septempunctataNative to Europe, introduced to North America; has seven spots on versus unspotted elytra of C. munda

More Details

Reproductive biology

is affected by milkweed plant , with different Asclepias species supporting different levels of production. Specific mechanisms and quantitative differences require reference to full research paper.

Tags

Sources and further reading