Yamatochaitophorus yichunensis sp. n. Apterous viviparous female: 15 dorsal view of body 16 dorsal view of head, dorsal setae shown 17 cephalic seta 18 antenna 19 ultimate rostral segment 20 C- or O-like tubercles on abdominal tergites, 21 marginal setae on abdominal tergites III–IV 22 marginal setae on meso- and metanotum 23 siphunculus 24 cauda 25 anal plate 26 cauda and anal plate, mosaic-like ornamentation on distal ventral area of anal plate shown 27 genital plate. Scale bars: 0.10 mm.