Quasicalathus conservans sp. nov., volume rendering of the holotype. 81. Head, dorsal aspect (the arrows point to the insertions of the supraorbital setae); 82. Head, ventral aspect; 83. Left external part of metathorax, ventral view; 84. Submentum (the arrows point to the insertions of the four lateral setae); 85. Posterior part of prosternum and procoxae; 86. Posterior part of metasternum and metacoxae; 87–89. Preserved remains of the aedeagus (87. Right lateral aspect; 88. Dorsal aspect; 89. Left lateral aspect). Abbreviations: bb – basal bulb of aedeagal median lobe; ce – compound eye; cxp – metacoxal plate; eph – partly evaginated lobes of endophallus; gu – gula; mem – metepimeron; mes – metepisternum; mtt – mentum tooth; mv – metaventrite; pcx – procoxa; pmr –preserved distal part of right paramere of aedeagal median lobe; psp – prosternal process; sc – scutellum; sps – setae of sensory pit; tl – terminal lamella of aedeagal median lobe.