Physonota helianthi

(Randall, 1838)

Sunflower Tortoise Beetle

Physonota helianthi is a in the . The is commonly known as the sunflower tortoise beetle and is to North America. It belongs to the Cassidinae, which are characterized by their distinctive shield-like body form. The species has been documented in Canadian provinces including Manitoba and Ontario.

Physonota helianthi by (c) Conway Hawn, some rights reserved (CC BY), uploaded by Conway Hawn. Used under a CC-BY license.Tortoise Beetle (Physonota helianthi) by Bill Bouton from San Luis Obispo, CA, USA. Used under a CC BY-SA 2.0 license.Sunflower Tortoise Beetle larva (Physonota helianthi) by Dapjwy. Used under a CC BY-SA 3.0 license.

Pronunciation

How to pronounce Physonota helianthi: /ˌfaɪsəˈnoʊtə ˌhiːliˈænθaɪ/

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Images

Distribution

North America. Documented occurrences include the Canadian provinces of Manitoba and Ontario.

Host Associations

  • Helianthus - name 'helianthi' suggests association with sunflower; specific relationships require verification

Life Cycle

construct defensive shields composed of and , held over the body using —paired structures extending from the end. These shields function in defense.

Behavior

Larval includes holding a fecal-exuvial shield like an umbrella over the body as a defensive mechanism against .

More Details

Larval Defense

The defensive shield construction using is a characteristic trait of the Physonota, documented in Colorado .

Sources and further reading