Genitalia of Nesticella okinawaensis, Howaia subterranea sp. nov., and N. occulta sp. nov. A male palp of N. okinawaensis, ventral view B same, retrolateral view C detail or paracymbium, dorsal view D female epigyne, ventral view; E H. subterranea sp. nov., female epigyne, ventral view F N. occulta sp. nov. female epigyne, ventral view. Abbreviations: Ca – apophysis of the retrolateral process of conductor; Cl – lobe of conductor; Cm – median process of conductor; Co – copulatory opening; Cp – prolateral process of conductor; Cr – retrolateral process of conductor; Di I–II – distal processes I and II of paracymbium; E – embolus; P – paracymbium; Ra – radical apophysis; Rx – radix; S – spermatheca; Sc – scapus; Sd – sperm duct; St – subtegulum; Te – tegulum; Ve – ventral process of paracymbium. Scale bars: 0.2 mm.