Figure 3 in Size, spines and crochets: defences of luna moth caterpillars against predation by brown anoles

Figure 3. Close-ups of luna moth caterpillars sporting scoli equipped with spines that are effective as defence against anoles. Scoli may deliver an aposematic signal as they can vary in colour from green (freshly molted fourth instar, top left) and black (late fourth instar, bottom left) to blue (freshly molted fifth instar, top right) and red (late fifth instar, bottom right).