Cassida piperata

Hope, 1842

Small Tortoise Beetle, tortoise beetle

Cassida piperata is a in the . to eastern Asia, it has been to North America and Europe, with established in northern Italy since 2021. It serves as a for the Holcotetrastichus rhosaces in Japan.

Cassida piperata by (c) Daniel Carr, some rights reserved (CC BY), uploaded by Daniel Carr. Used under a CC-BY license.Cassida piperata by (c) Zihao Wang, some rights reserved (CC BY), uploaded by Zihao Wang. Used under a CC-BY license.Cassida piperata by (c) Katja Schulz, some rights reserved (CC BY). Used under a CC-BY license.

Pronunciation

How to pronounce Cassida piperata: /kasˈsiː.da piˈpe.ra.ta/

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Images

Habitat

Anthropized areas including external walls of buildings, log , litter, and river banks at elevations of 0-200 m. In its range, occurs in northeastern Japan.

Distribution

to East Palaearctic and Indomalayan Regions; to the United States; established in northern Italy (Veneto: Padova province, Codevigo, Vigonza; Lombardia: Bergamo province, Rogno, Lecco province, Verderio) since 2021.

Seasonality

recorded in May, August, September, October, and November. observed in adults on log in November.

Diet

; recorded feeding on Amaranthus retroflexus (redroot pigweed).

Host Associations

  • Amaranthus retroflexus - explicitly recorded as in Italy

Life Cycle

observed in stage. Mating recorded in adults on plants in anthropized areas.

Behavior

Overwinters on log . observed mating on plants. Occurs on external walls of buildings and in litter in anthropized .

Ecological Role

for the Holcotetrastichus rhosaces (Walker) (: Tetrastichinae) in Japan. Potential pest of cultivated plants; non- with capacity for establishment and spread in Europe based on bioclimatic modelling.

Human Relevance

Non- with potential to become an agricultural pest. Subject of bioclimatic modelling to assess invasion risk in Europe.

Similar Taxa

  • Cassida nebulosaBoth serve as for the same Holcotetrastichus rhosaces in Japan and occur sympatrically in that region.

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Sources and further reading