Chelymorpha cribraria

(Fabricius, 1775)

Common Sieve Tortoise Beetle

Chelymorpha cribraria is a tortoise beetle in the leaf beetle Chrysomelidae, distributed broadly across the Caribbean, Central America, North America, and South America. It is frequently misidentified as the closely related Chelymorpha alternans due to similarities in coloration and body shape. Like other members of the Chelymorpha, it exhibits the characteristic domed and prothorax that enable the defensive of withdrawing and legs beneath the shell-like covering when disturbed. The epithet 'cribraria' refers to a sieve-like appearance, likely describing the punctate or reticulate surface pattern of the elytra.

Chelymorpha cribraria by no rights reserved, uploaded by Frank Thomas Sautter. Used under a CC0 license.Chelymorpha cribraria by no rights reserved, uploaded by Frank Thomas Sautter. Used under a CC0 license.Tortoise Beetle (Chelymorpha cribraria) in Sunshine (12631501684) by Bob Peterson from North Palm Beach, Florida, Planet Earth!. Used under a CC BY-SA 2.0 license.

Pronunciation

How to pronounce Chelymorpha cribraria: /kɛˈlɪmɔrfə krɪˈbrɛərɪə/

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Identification

Chelymorpha cribraria can be distinguished from its Chelymorpha alternans, with which it is most commonly confused, by subtle differences in elytral punctation and color pattern. The specific epithet 'cribraria' (sieve-like) suggests a more distinctly punctate or reticulate elytral surface compared to related . Precise identification typically requires examination of genitalic characters or detailed comparison of elytral microsculpture. The Chelymorpha as a whole is characterized by strongly convex, tortoise-like body form with the and prothorax forming a continuous rounded shield, and with expanded terminal segments.

Images

Distribution

Caribbean Sea region, Central America, North America, and South America. GBIF records confirm presence throughout the Caribbean, Middle America, and both northern and southern regions of the Americas.

Behavior

Exhibits the characteristic defensive of the tortoise beetle Cassidinae: when disturbed, withdraws and legs beneath the domed and prothorax, which form a protective shell.

Similar Taxa

  • Chelymorpha alternansSimilar coloration and body shape; the two are frequently mistaken for one another in the field

Sources and further reading