Fig. 2

Micrographs exemplifying the general organization and measurements of the skin and varying extents of the penetration of capillaries into the epidermis of Leptobrachium boringii: (A) lateral abdominal skin of a breeding male with a snout-vent length (SVL) of 79.4 mm; (B) dorsal head and (C) ventral proximal hindlimb skin of a nonbreeding male with an SVL of 80.6 mm; (D) dorsal head and (E) ventral proximal hindlimb skin of a breeding male with an SVL of 74.7 mm; and (F) dorsal head and (G) ventral proximal hindlimb skin of a breeding female with an SVL of 71.2 mm. Each yellow line approximates the minimum diffusion path of a capillary, yellow arrows indicate subepidermal capillaries, and red arrows indicate melanophores. The green line and the gray area show sections of a freehand line along and a polygon matching the epidermis, respectively. Ep: epidermis; GG: granular gland; MG: mucous gland; N: nerve plexus; SC: stratum compactum thickness; SS: stratum spongiosum; SV: subcutaneous vessel; Total: total skin thickness; T: tela subcutanea. All from the right side of the body