SEM photographs of Fotolaimus cavus sp. nov. A, B, D–F, M–O. Non-type female; C, G–L. Non-type male. A. Oblique striations on cuticle; B. Anterior region; C. Male cloacal region; D. Papilliform somatic sensilla (arrowheads); E. Female cephalic region, lateral view; F. Female cephalic region, anterior view; G. Male cephalic region, anterior view; H. SE-pore; I. Male posterior region with cloacal opening (arrowhead); J. Tail tip with spinneret (arrowhead); K. Cloacal region, subventral view; L. Ventral papillae; M. Vulva; N. Circle of terminal pores; O. Terminal pores. Scale bars: 5 μm (A, H, J, L); 50 μm (B, I); 20 μm (C, E, N); 10 μm (D, F, G, K, M, O).