Stegocephalus carolus sp. nov., MBM 286610, holotype, ♀ (8.9 mm): H, head; A1, antenna 1; A2, antenna 2; UL, upper lip; LL, lower lip; Md L, left mandible; Md R, right mandible; Mx1, maxilla 1; Mx2, maxilla 2; Mxp, maxilliped.