Loricaria cuffyi n. sp. is described based on 36 specimens from the Essequibo and upper Negro River drainages in western Guyana and the upper Orinoco River drainage in Venezuela. The new species can be distinguished from sympatric and geographically proximate congeners by a postorbital notch that is inconspicuous, shallow, and rounded; odontode ridges on the dorsum of head and predorsal weakly developed; abdominal plates tightly joined and completely covering the median abdominal space and pectoral girdle; higher anterior lateral plate counts; and coloration characteristics. The distribution of the new species adds to an interesting and well-documented biogeographical pattern exhibited by other Guiana Shield loricariids influenced by the proto-Berbice during the Cenozoic and recent configuration of drainages in the Guiana Shield. We present an update on the taxonomy of Loricaria, and discuss the biogeography and conservation status of the new species. This article is protected by copyright. All rights reserved.

中文翻译：

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Loricaria cuffyi (Siluriformes: Loricariidae)，一种来自圭亚那地盾的loricariin鲶鱼新种

Loricaria cuffyi n. sp. 根据来自圭亚那西部埃塞奎博河和内格罗河上游流域以及委内瑞拉奥里诺科河上游流域的 36 个样本进行描述。新物种可以通过一个不显眼、浅而圆的眶后凹口与同域和地理上邻近的同类区分开来。头背和前背的齿状脊发育较弱；腹板紧密连接并完全覆盖正中腹腔和胸带；更高的前外侧板计数；和着色特性。新物种的分布增加了一个有趣且有据可查的生物地理模式，其他圭亚那地盾loricariids在新生代和圭亚那地盾中最近的排水结构受到原始Berbice影响。我们介绍了 Loricaria 分类学的最新情况，并讨论了新物种的生物地理学和保护状况。本文受版权保护。版权所有。