Account
What the sources say about this taxon, as written.
etymology · 
Plazi
Etymology. The specific epithet is derived from “Si Loi”, which is a unique artistic style of Zhuang folk songs in Daxin County (the type locality). Noun in apposition.
diagnosis · Plazi
Diagnosis. The new species resembles S. platnicki Song, Chen & Gong, 1991 in the shape of the palpal bulb and copulatory duct, but it can be distinguished by the following: (1) the length of the embolus is much less than half of the bulb width (Figs 4 B , 5 B ; vs. in S. platnicki , the length of the embolus is more than half of bulb width; see Lin et al. 2023 : fig. 18 A); (2) the end of the retrolateral tibial apophysis is relatively straight (Figs 4 B , 5 B ; vs. in S. platnicki , the end of the retrolateral tibial apophysis is strongly curved; see Lin et al. 2023 : fig. 18 A); (3) the ventral intermediate tibial apophysis is rounded at the distal end in ventral view (Figs 4 B , 5 B ; vs. in S. platnicki , the ventral intermediate tibial apophysis is sharp at the distal end in ventral view; see Lin et al. 2023 : fig. 18 A); and (4) the two copulatory ducts are nearly parallel (Figs 4 D , 5 D ; vs. curved posteriorly in S. platnicki ; see Lin et al. 2023 : fig. 19 A).
comments · Plazi
Comments. Following a previous study on Spartaeus ( Yang et al. 2017 : figs 4, 8, 10), we labelled the weekly sclerotized apophysis derived from the tegulum of male palpal bulb as TA . This structure was identified as M 3 in Wanless (1984) . Additionally, the membranous patch of the distal haematodocha at the base of embolus is referred to here as M, aligning with the designation of M 1 in Wanless’s (1984 ) study on Spartaeus . In the redescription of S. platnicki Song, Chen & Gong, 1991 , the marked TA ( Lin et al. 2023 : fig. 18) is likely mislabelled and probably should be M in this study, considering its position at the base of embolus.