South American leaf beetle

insect

Also known as: Desmonota variolosa

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Last updated

June 25, 2026

Quick Summary

The South American leaf beetle, scientifically known as Polychalca punctatissima, is a type of tortoise beetle. These beetles are part of the subfamily Cassidinae and are characterized by body extensions that make them resemble turtles.1

Tortoise beetles, including the South American leaf beetle, are typically small, ranging from 5 to 12 mm in length. Some tropical species, like Polychalca punctatissima, are known for their brilliant, iridescent colors, often resembling emeralds due to the pits and grooves on their bodies. This vibrant coloring fades after death as the beetle dries out.1

These beetles and their larvae can be destructive to garden plants and crops such as sweet potatoes. Many species exhibit sedentary habits, with larvae remaining together through pupation and adults often feeding and mating on the same plant where they hatched.1

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tortoise beetle
Physical description
…pits and grooves covering a South American leaf beetle (Polychalca punctatissima) give it an iridescent green color with depth resembling that of an emerald. The coloring disappears at death because of the drying and shrinkage that occur, and the dead beetle turns dull brown.
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…pits and grooves covering a South American leaf beetle (Polychalca punctatissima) give it an iridescent green color with depth resembling that of an emerald. The coloring disappears at death because of the drying and shrinkage that occur, and the dead beetle turns dull brown.
Read More