Hatchling and first instar: (a, b‘) SEM; (b) Congo-red staining. (a) Hatchling: the embryo has a compact form, and the seashell-like halves of the carapace cover the entire legs. The surface of the carapace shows a rhombic pattern. (b) First instar: the entire rim of the carapace is covered with setae. The carapace spine has stretched out and points now in dorso-posterior direction; its edges are covered with setae. (b‘) The two sensory setae located posterior to the proctodeum stick out almost parallel to the carapace spine. They have developed a feather-duster-like shape: at the distal part of the setae numerous curly hair-like setae are evident. a1, a2 = first and second antennae; ab = abdomen; ca = carapace; casp = carapace spine; lb = labrum.