PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY
Longhorn beetle cuticle detail. This is the cuticle of a longhorn beetle (Macrodontia cervicornis). The cuticle is the outer covering of an invertebrate, forming its exoskeleton. It is made of the protein chitin. Here, the cuticle is coloured, with patterns that help identify the beetle. This beetle is native to Peru.
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