Fig. 7 in The mostly cavernicolous millipede genus Stygiiulus Verhoeff, 1929, stat. nov.: taxonomy, distribution and phylogenetic relationships (Diplopoda, Julida, Julidae)

Fig. 7. Stygiiulus montellensis (Verhoeff, 1930) comb. nov., ♂ from Grotta [cave] Crede-a (NHMD). A. Right gonopods, mesal view. B. Right mesomere, oral view. C. Left vulva, caudal, slightly mesal view. Abbreviations: la = lateral ampulla; lt = lateral tube; m = mesomere; ma = median ampulla; mt = median tube; op = operculum. Scale bars: A–B = 0.2 mm; C = 0.3 mm.