ABSTRACT A new species of the spider genus Cuacuba from Brazil, C. ribeira sp. nov. is described and illustrated based on eighty-six specimens collected from caves in the Vale do Ribeira region, in the states of São Paulo and Paraná. This species is recognized by the hook-shaped median apophysis on the male palp, and females by having invaginations on the sides of the median posterior edge of the epigynal plate. Cuacuba ribeira sp. nov. is the third species recorded for the genus, and like the other two, also comes from Brazilian caves. http://www.zoobank.org/urn:lsid:zoobank.org:pub:44036D6B-CA3F-4C15-BBA3-3E5FE81FB299

中文翻译：

---

巴西洞穴中的一种新种（Araneae，Theridiosomatidae）

摘要 来自巴西的蜘蛛属 Cuacuba 的一个新种 C. ribeira sp。十一月 是根据从圣保罗州和巴拉那州的里贝拉河谷地区的洞穴中收集的 86 个标本进行描述和说明的。该物种通过雄性触须上的钩状正中隆起识别，雌性通过在上腹板正中后缘的侧面有内陷来识别。Cuacuba ribeira sp. 十一月 是该属的第三个物种，与其他两个一样，也来自巴西的洞穴。http://www.zoobank.org/urn:lsid:zoobank.org:pub:44036D6B-CA3F-4C15-BBA3-3E5FE81FB299