dc:description"Fig. 1. Habitus of Bryothinusa spp. A – B. algarum Sawada, 1971; B – B. minuta (Sawada, 1955); C – B. tsutsuii (Sawada, 1955); D – B. koreana Ahn & Jeon, 2004; E – B. yoshigoui sp. nov.; F – B. japonica Liu, Ono & Maruyama, 2020; G – B. sakishimana Sawada, 1991; H – B. constricta sp. nov.; I – B. hokkaidensis sp. nov.; J – B. fulvipennis sp. nov.; K – B. itsuroi sp. nov.; L – B. aikoae sp. nov.; M – B. okinawana sp. nov.; N – B. nigra sp. nov.; O – B. nakanei (Sawada, 1955); P – B. moriguchii sp. nov.; Q – B. gangjinensis Ahn & Jeon, 2004. Scale bars: 1.00 mm.";
dc:description"Fig. 2. Compound eyes of Bryothinusa spp.A – B. algarum Sawada, 1971; B – B. minuta (Sawada, 1955); C – B. tsutsuii (Sawada, 1955); D – B. koreana Ahn & Jeon, 2004; E – B. yoshigoui sp. nov.; F – B. japonica Liu, Ono & Maruyama, 2020; G – B. sakishimana Sawada, 1991; H – B. constricta sp. nov.; I – B. hokkaidensis sp. nov.; J – B. fulvipennis sp. nov.; K – B. itsuroi sp. nov.; L – B. aikoae sp. nov.; M – B. okinawana sp. nov.; N – B. nigra sp. nov.; O – B. nakanei (Sawada, 1955); P – B. moriguchii sp. nov.; Q – B. gangjinensis Ahn & Jeon, 2004. Scale bars: 0.05 mm.";
dc:description"Fig. 12. Bryothinusa fulvipennis sp. nov. A – labrum; B – mandible, dorsal view; C – lacinia, dorsal view; D – labium; E – mentum; F – male sternite VIII; G – female sternite VIII; H – median lobe, ventral view; I – median lobe, lateral view; J – paramere; K – spermatheca. Scale bars: 0.1 mm.";
dc:description"Fig. 21. Collection localities of Bryothinusa species in Japan: A – B. koreana Ahn & Jeon, 2004 and B. japonica Liu, Ono & Maruyama, 2020 in Shima-nogita, Fukuoka; B – B. aikoae sp. nov., B. fulvipennis sp. nov., B. japonica and B. nigra sp. nov. in Kuroto, Chiba; C – B. hokkaidensis sp. nov. in Shunkunitai, Hokkaidô; D – B. nigra sp. nov. and B. tsutsuii (Sawada, 1955) in Edateku-jima; E – B. nakanei (Sawada, 1955) in Nagura-anparu, Ishigaki-jima; F – B. gangjinensis Ahn & Jeon, 2004 in Iki-no-matsubara, Fukuoka; G – B. algarum Sawada, 1971, B. japonica and B. minuta (Sawada, 1955) in Sunosaki, Fukuoka.";
dc:description"Fig. 22. Map of examined specimens of Bryothinusa spp. from Japan: white inverted triangle – B. algarum Sawada, 1971; black inverted triangle – B. minuta (Sawada, 1955); white star – B. tsutsuii (Sawada, 1955); black star – B. koreana Ahn & Jeon, 2004; black square – B. yoshigoui sp. nov.; white triangle – B. japonica Liu, Ono & Maruyama, 2020; black diamond – B. sakishimana Sawada, 1991; white diamond – B. constricta sp. nov.; white square – B. hokkaidensis sp. nov.; black triangle – B. fulvipennis sp. nov.; double circle – B. itsuroi sp. nov.; arrow – B. aikoae sp. nov.; black hart – B. okinawana sp. nov.; circled dot – B. nigra sp. nov.; white circle – B. nakanei (Sawada, 1955); white hart – B. moriguchii sp. nov.; black circle – B. gangjinensis Ahn & Jeon, 2004.";