Contributions on the treehopper genus Ennya Stål, 1866 (Hemiptera: Membracidae) with two new species from Ecuador Author Montalvo-Salazar, Jorge L. 0009-0003-1221-0304 Universidad San Francisco de Quito USFQ, Colegio de Ciencias Biológicas y Ambientales, Instituto de Biodiversidad Tropical IBIOTROP, Laboratorio de Zoología Terrestre, Museo de Zoología, Quito 170901, Ecuador jorgemontalvo2000@gmail.com Author López-García, Margarita M. 0000-0003-2796-2931 Universidad San Francisco de Quito USFQ, Colegio de Ciencias Biológicas y Ambientales, Instituto de Biodiversidad Tropical IBIOTROP, Laboratorio de Zoología Terrestre, Museo de Zoología, Quito 170901, Ecuador mlopezg@usfq.edu.ec text Zootaxa 2024 2024-03-21 5428 2 269 289 http://dx.doi.org/10.11646/zootaxa.5428.2.6 journal article 10.11646/zootaxa.5428.2.6 1175-5326 10847591 47855779-AAC3-4380-A7D1-06BBE6BF3FF4 Ennya sobria ( Walker, 1851 ) ( Figs. 1C–D , 10A ) Material examined: Holotype female (DEI Hemimetabola # 100324) Hille limbispina Breddin (SDEI) . Additional material: Two females (ZSFQ-i11661:11662) and one male (ZSFQ-i12390) from ECUADOR : Napo : Papallacta , Guango Lodge . Comments: Ennya sobria differs from all its congeners except for E. dorsalis in having a spine-like dorsal process, orange coloration and black central carina. Ennya sobria was considered a synonym of Ennya dorsalis for a long time until Sakakibara (1996a) reviewed the types and revalidated the species; however, he did not provide any comments. Also, we could not find differences in the original description of E. dorsalis ( Fairmaire, 1846 ) . The localities reported for this species, including the type locality “Quito”, are not precise ( Goding 1929 ). However, this species definitively is not found in Quito and we suggest somewhere around Papallacta could be the type locality due to its proximity to Quito (~ 50 km east). Also it has been reported from Colombia ( McKamey 1998 ). This species is subsocial, with adults and nymphs at different stages found together, in groups of ten to 20 individuals on the same host plant.