Molineri Carlos, Derka TomÁŠ
Instituto de Biodiversidad Neotropical, CONICET (National Council of Scientific Research), Universidad Nacional de Tucumán, Facultad de Ciencias Naturales e Instituto M. Lillo, Tucumán, Argentina..
Zootaxa. 2020 Jun 2;4786(2):zootaxa.4786.2.7. doi: 10.11646/zootaxa.4786.2.7.
A new species of Leptohyphes Eaton (Ephemerotera: Leptohyphidae) is described, diagnosed and illustrated from nymphs collected in the Pantepui region in Southeastern Venezuela. Leptohyphes kukenan sp. nov. is similar to Leptohyphes populus Allen because they share a unique character for the genus: male compound eyes are divided. Other unique characters for the new species include a plesiomorphic gill structure, with imbricated ventral lamellae, and paired subapical denticles on tarsal claw. The new species show a unique combination of characters that distinguish it from L. populus and all other species of Leptohyphes: fore and hind margin of femora with spines on strong elevated sockets, part of body and legs covered by small pale spots, tarsal claws with 4-5 marginal denticles and a subapical pair of submarginal denticles, pronotum with large rounded lateral projection, hind wing pads absent in female, gill formula 8/7/7/4/1, operculate gill with imbricated ventral lobes, and gill V without ventral extension on dorsal lamella.
描述、诊断并展示了一种来自委内瑞拉东南部潘泰普伊地区采集的若虫的新物种——细钩蜉属伊顿种（蜉蝣目：细钩蜉科）。新物种库肯南细钩蜉（Leptohyphes kukenan sp. nov.）与杨树细钩蜉（Leptohyphes populus Allen）相似，因为它们共有该属的一个独特特征：雄性复眼分开。新物种的其他独特特征包括具有覆瓦状腹叶的近祖型鳃结构，以及跗爪上的成对亚顶端小齿。新物种呈现出独特的特征组合，使其有别于杨树细钩蜉和细钩蜉属的所有其他物种：股节的前缘和后缘在强烈隆起的窝上有刺，身体和腿部的部分被小的浅色斑点覆盖，跗爪有4 - 5个边缘小齿和一对亚顶端的亚边缘小齿，前胸背板有大的圆形侧突，雌性无后翅芽，鳃式为8/7/7/4/1，具盖鳃有覆瓦状腹叶，鳃V的背叶无腹侧延伸。
