Yamatochaitophorus yichunensis sp. n. Apterous viviparous female: 1 dorsal view of head 2 antennal segments I–V 3 ultimate rostral segment 4 cephalic seta 5 marginal seta on abdominal tergite I 6 spinal setae and tubercles on abdominal tergite I in right, setal tubercles at base shown 7 tubercles on pleuro-marginal area on abdominal tergite IV 8 dorsal view of pronotum in right, dorsal setae, setal tubercles at base and tubercles shown 9 dorsal view of mesonotum in right, dorsal setae, setal tubercles at base and tubercles shown 10 siphunculi 11 cauda 12 anal plate 13 genital plate 14 embryo, dorsal setae shown.