Four new species of Tapinocyba Simon, 1884 (Araneae, Linyphiidae) from Jiangjin District of Chongqing, China

Four new species of the genus <i>Tapinocyba</i> Simon, 1884 are described from Jiangjin, Chongqing: <i>T.centralis</i> <b>sp. nov.</b> (♂), <i>T.denticulata</i> <b>sp. nov.</b> (♂♀), <i>T.triangularis</i> <b>sp. nov.</b> (♂♀), and <i>T.virga</i> <b>sp. nov.</b> (♂♀). The new species exhibit distinctive genital features, such as a bifurcated embolus tip in the male palp of <i>T.denticulata</i> <b>sp. nov.</b> and <i>T.virga</i> <b>sp. nov.</b>, and embolus tip unbifurcated in <i>T.centralis</i> <b>sp. nov.</b> The epigynes display more unique characteristics, such as epigynal plate with a pit ventrally on its frontal face in <i>T.triangularis</i> <b>sp. nov.</b> and <i>T.virga</i> <b>sp. nov.</b>, which is absent in all other known <i>Tapinocyba</i> species. Detailed descriptions, along with photographs of genital characters, somatic features, and a distribution map, are provided.