Figure 2 in The Origin and Evolution of the Rattlesnake Rattle: Misdirection, Clarification, Theory, and Progress

Figure 2. As neonates and juveniles, some species of rattlesnakes possess a tail (caudal lure) closely resembling insect larvae or "grubs" (see references in Schuett et al., 1984; Reiserer, 2002; Rabatsky, 2008; Reiserer and Schuett, 2008; Clark et al., 2016, www.youtube.com/watch?v=N2Nf8uMOZ2c). a) A young Western Massasauga (Sistrurus tergeminus). b) Note the resemblance of the tail to the insect larva. c) A newborn Sidewinder (Crotalus cerastes). d) Note the resemblance of the tail to the insect larva. Photo of Sidewinder by Ed Cassano.