Emmerich Daniel, Molineri Carlos
Instituto de Biodiversidad Neotropical, CONICET-UNT (Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de Tucumán) Facultad de Ciencias Naturales e Instituto M. Lillo, San Miguel de Tucumán, (4000)-Tucumán, Argentina. Escuela Normal Superior D. V. Sarsfield. Villa Dolores, Córdoba, Argentina..
Zootaxa. 2020 Nov 24;4885(1):zootaxa.4885.1.8. doi: 10.11646/zootaxa.4885.1.8.
A new species of Tricorythodes Ulmer (Ephemeroptera: Leptohyphidae) from Uruguay is described and illustrated based on nymphs and adults. Tricorythodes biluhue sp. nov. is related to T. arequita Traver, T. mirca Molineri, T. sallesi Dias, Cabette De Sousa, and T. tragoedia Souto, Angeli Salles. The adults of these species are similar (share body color patterns formed by irregularly distributed pigments, while nymphs and adults present subapical blackish marks on tibiae). The nymphs of the new species present a spine on the inner margin of superlingua; operculate gills with a clear paler anterolateral area; and fore tarsal claw with 10-13 marginal denticles and with 0-1 + 1 submarginal denticles. This species has a wide distribution in Uruguay and was found in small streams with stony substrate and thick sand. Additional records for T. arequita Traver in Uruguay are also provided.
基于若虫和成虫，对来自乌拉圭的一种新的三刺蜉属（Tricorythodes Ulmer，蜉蝣目：细蜉科）物种进行了描述和图示。新物种比卢韦三刺蜉（Tricorythodes biluhue sp. nov.）与阿雷基塔三刺蜉（T. arequita Traver）、米尔卡三刺蜉（T. mirca Molineri）、萨莱斯三刺蜉（T. sallesi Dias, Cabette De Sousa）以及悲剧三刺蜉（T. tragoedia Souto, Angeli Salles）相关。这些物种的成虫相似（都有由不规则分布的色素形成的体色模式，若虫和成虫的胫节上都有近顶端的黑色斑）。新物种的若虫在超舌内缘有一根刺；鳃盖有明显较淡的前外侧区域；前跗爪有10 - 13个边缘小齿和0 - 1 + 1个亚边缘小齿。该物种在乌拉圭分布广泛，发现于有石质基质和厚沙的小溪中。还提供了阿雷基塔三刺蜉在乌拉圭的更多记录。
