GenusPsilogamasusAthias-Henriot, 1969 Type species. Psilogamasus hurlbutti Athias-Henriot, 1969 Diagnosis. Both sexes. Dorsal idiosoma with less than 30 pairs of setae; setae z 5 of dorsal hexagon similar to j 5 and j 6 in form (smooth), while different in length (z 5 longer); tritosternum biramous; opisthogastric shield bearing five to six pairs of setae; setae ZVI and gland pores gv 2 absent (present in P. decemtrichus sp. nov.); seta al of palp femur comblike, all and al 2 of palp genu entire and spatulate distally; corniculi small; epistome trispinate. Female with separated podonotal shield with 16–18 pairs of setae, and opisthonotal shield with five to six pairs of setae (ten pairs in P. decemtrichus sp. nov.); genital shield triangular or subtriangular; peritrematal shield anteriorly fused to podonotal shield and posteriorly free; movable digit of chelicerae with three or four teeth; setae avl and av 2 on femur II, avl on genu II and tibia II acicular. Male with holodorsal shield and transverse suture in central region; movable digit of chelicera with five or six teeth; setae avl and av 2 on femur II modified into spurs fused at base; seta avl on genu II and tibia II each modified into spur.

Published as part of Yao, Mao-Yuan, Chen, Jian-Xin, Wu, You-Fang, Ren, Rong, Yi, Tian-Ci & Jin, Dao-Chao, 2025, Three new species of Psilogamasus Athias-Henriot, 1969 (Acari, Parasitiformes, Parasitidae) from Southwest China, pp. 405-421 in ZooKeys 1259 on pages 405-421, DOI: 10.3897/zookeys.1259.171008