Bioacoustics of Pancorius yangming

Diagnosis. The male of the new species resembles P. hainanensis Song & Chai, 1991 ( Wang & Li 2023 , fig. 15A–C) in having a short, stout embolus and a single RTA with a pointed tip, but can be distinguished by: 1) the RTA longer than tibia in retrolateral view ( Fig. 3C ), while shorter than half tibia in P. hainanensis (fig. 15B); 2) the embolus straight with digitiform tip in ventral view ( Fig. 3B ), while slightly curved retrolaterally with pointed tip in P. hainanensis (fig. 15A); 3) the posterior tegular lobe curved prolaterally ( Fig. 3B ), while slightly curved retrolaterally in P. hainanensis (fig. 15A). The female of this species resembles P. altus Kanesharatnam & Benjamin, 2021 ( Kanesharatnam & Benjamin, 2021 , figs 19d, h, 20h–j) in having the central epigynal pocket, two posterior copulatory openings and short copulatory ducts, but can be easily distinguished by: 1) the copulatory openings level with epigynal pocket ( Fig. 3A ), while distinctly above epigynal pocket in P. altus (fig. 20h, i); 2) the spermathecae transverse and closely apposed ( Fig. 3E ), while longitudinal and spaced farther apart (fig. 20j).