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X., Taxa Only, Exact Match: 100 Treatments

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Saxifraga x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 371 371
Spiraea x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 5 5
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 367 367
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 368 368
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 376 376
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 376 376
Tilia x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 248 248
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 372 372
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 375 375
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 372 372
Circaea x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 306 306
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 370 370
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 370 370
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 370 370
Xorides (X.) sepulchralis     Cao, Liang-Ming, Achterberg, Cornelis Van, Tang, Yan-Long, Wang, Xiao-Yi & Yang, Zhong- Qi, 2020, Revision of parasitoids of Massicus raddei (Blessig & Solsky) (Coleoptera Cerambycidae) in China, with one new species and genus, Zootaxa 4881 (1), pp. 104-130 : 108-109 108-109
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 370 370
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 367 367
Mentha x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 184 184
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 375 375
Eucalyptus x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 304 304
Aster x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 114 114
Galium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 22 22
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 375-376 375-376
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 374 374
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 374 374
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 374 374
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 370 370
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 367 367
Galium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 30 30
Helianthus x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 141-142 141-142
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 376 376
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 376 376
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 369 369
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 370 370
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 373 373
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 374 374
Saxifraga x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 369 369
Symphytum x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 104 104
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 374 374
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 373 373
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 373 373
Aster x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 114 114
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 373 373
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 369 369
Sagina x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 147 147
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 373 373
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 374 374
Mentha x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 184 184
Mentha x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 185 185
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 369 369
Populus x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 55 55
Populus x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 55 55
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 375 375
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 375 375
Rubus longistipularis subsp. x var. boliviensis     Espinel-Ortiz, David A. & Romoleroux, Katya, 2021, Two new species of Rubus L. (Rosaceae) from the western Andes of Ecuador, PhytoKeys 187, pp. 141-159 : 141 141
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 374-375 374-375
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 373 373
Saxifraga x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 369 369
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 367 367
Hieracium x     Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 373 373
Potamogeton × anguillanus Koidzumi, 1929, new species     Koidzumi, Gen-Iti), 1929, Contributions ad Cognitionem Florae Asiae Orientalis, Annales du Museum National d'Historie Naturelle, Paris 43, pp. 382-407 : 398 398
Rhododendron × gilliardii Sleumer, 1960, new species     Sleumer, Hermann Otto, 1960, Florae Malesianae praecursores XXIII. The genus Rhododendron in Malaysia, Reinwardtia 5, pp. 45-231 : 88 88
Oberonia × hybrida Schlechter, 1911, new species     Schlechter, Fridrich Richard Rudolf, 1911, Die Orchidaceen von Deutsch-Neu-Guinea, Repertorium Specierum Novarum Regni Vegetabilis 1, pp. 1-240 : 154 154
Rhododendron × nebulicolum Danet, 2005, new species     Danet, Frederic, 2005, Three new species and a new natural hybrid of Rhododendron (Ericaceae) from New Guinea, ADansonia, Sér. 3 27, pp. 267-280 : 275 275
Cymbidium × nujiangense X. P. Zhou, S. P. Lei & Z. J. Liu 2007     Chen, Ronglian, Zhang, Faqi, Chen, Shilong & Chi, Xiaofeng, 2023, Checklist of national key protected wild plants on the Qinghai-Tibetan Plateau, Biodiversity Data Journal 11, pp. 103289-103289 : 103289 103289
Potentilla × pantotricha Soják, 2003, new species     Soják, Jiří, 2003, Some new taxa of Potentilla (Rosaceae) from New Guinea, Asia and Canada (Notes on Potentilla XV), Willdenowia 33, pp. 409-423 : 412 412
Rhododendron × schoddei Sleumer, 1963, new species     Sleumer, Hermann Otto, 1963, Florae Malesianae precursores XXXV. Supplementary notes towards the knowledge of the Ericaceae in Malaysia, Blumea - Biodiversity, Evolution and Biogeography of Plants 12, pp. 89-144 : 95 95
Dendrobium × von-paulsenianum Hawkes & Heller, 1957, new species     Hawkes, Alex Drum & Heller, Alfonse Henry, 1957, Nomenclatural notes in the Dendrobium alliancea, Occasional Papers of the Bernice P. Bishop Museum 20, pp. 119-132 : 125 125
Xabea     Dawwrueng, Pattarawich, Tan, Ming Kai, Artchawakom, Taksin & Waengsothorn, Surachit, 2017, Species checklist of Orthoptera (Insecta) from Sakaerat Environmental Research Station, Thailand (Southeast Asia), Zootaxa 4306 (3), pp. 301-324 : 313 313
Xabea levissima     Liu, Xiao-Tong, Jing, Jun, Xu, Yue, Liu, Yun-Fei & He, Zhu-Qing, 2018, Revision of the tree crickets of China (Orthoptera: Gryllidae: Oecanthinae), Zootaxa 4497 (4), pp. 535-546 : 543 543
Xabeini     Campos, Lucas Denadai De, Dias, Pedro Guilherme Barrios De Souza, Audino, Jorge Alves, Desutter-Grandcolas, Laure & Nihei, Silvio Shigueo, 2023, The fifth family of the true crickets (Insecta: Orthoptera: Ensifera: Grylloidea), Oecanthidae defin. nov.: phylogenetic relationships and divergence times, Zoological Journal of the Linnean Society 197 (4), pp. 1034-1077 : 1051 1051
Xacoxoxotlani chiapensis   sp. nov.  Ferreira, Vinicius S., 2024, Description of a second genus of Chespiritoinae (Coleoptera, Lampyridae), with updates on the subfamily diagnosis and key to species and genera, Revista Brasileira de Entomologia (e 20240075) 68 (4), pp. 1-7 : 6 6
Xacoxoxotlani   gen. nov.  Ferreira, Vinicius S., 2024, Description of a second genus of Chespiritoinae (Coleoptera, Lampyridae), with updates on the subfamily diagnosis and key to species and genera, Revista Brasileira de Entomologia (e 20240075) 68 (4), pp. 1-7 : 3-6 3-6
Isocopris xacriaba   sp. nov.  Rossini, Michele & Vaz-de-Mello, Fernando Z., 2017, A taxonomic review of the genus Isocopris Pereira and Martínez, 1960 (Coleoptera: Scarabaeidae: Scarabaeinae), with description of a new Brazilian species, Journal of Natural History (J. Nat. Hist.) 51 (19 - 20), pp. 1091-1117 : 1112-1113 1112-1113
Xantholeon xadnus     Miller, Robert B. & Stange, Lionel A., 2012, The cave mouth antlions of Australia (Neuroptera: Myrmeleontidae), Insecta Mundi 2012 (250), pp. 1-65 : 35 35
Cypriniformes   new species  Jordan, David Starr, 1877, On the fishes of northern Indiana, Proceedings of the Academy of Natural Sciences of Philadelphia 29, pp. 42-82 : 79 79
Xaetomylaeus asperrimus     Love, Milton S., Bizzarro, Joseph J., Cornthwaite, Maria, Frable, Benjamin W. & Maslenikov, Katherine P., 2021, Checklist of marine and estuarine fishes from the Alaska-Yukon Border, Beaufort Sea, to Cabo San Lucas, Mexico, Zootaxa 5053 (1), pp. 1-285 : 29 29
Gymnobela xaioca   sp. nov.  Figueira, Raquel Medeiros Andrade & Absalão, Ricardo Silva, 2012, Deep-water Raphitomidae (Mollusca, Gastropoda, Conoidea) from the Campos Basin, southeast Brazil, Zootaxa 3527, pp. 1-27 : 20 20
Polhillia xairuensis   sp. nov.  du Preez, B., Dreyer, L. L., Stirton, C. H. & Muasya, A. M., 2021, A monograph of the genus Polhillia (Genisteae: Fabaceae), South African Journal of Botany 138, pp. 156-183 : 176-177 176-177
Xaiva mcleayi     Muñoz, Isabel, García-Raso, J. Enrique, Chillón, Begoña Sánchez & Cuesta, Jose A., 2025, Marine crabs from African waters housed in the Museo Nacional de Ciencias Naturales (MNCN-CSIC): An opportunity for biogeographic and systematic studies. Part I: Heterotremata (Decapoda, Brachyura), European Journal of Taxonomy 996, pp. 1-94 : 52 52
Xaiva     Klompmakej, Javiej Luque Cajjie E. Schweitzej William Santana Rogej W. Pojtell Fjancisco J. Vega Adiël A., 2017, Checklist of fossil decapod crustaceans from tropical America. Part I: Anomura and Brachyura, Nauplius (e 2017025) 25, pp. 1-85 : 44 44
Copidognathus xaixaiensis   sp. nov.  Prochesë, Së Erban, 2002, New species of Copidognathinae (Acari: Halacaridae) from southern Africa, Journal of Natural History 36 (8), pp. 999-1007 : 1000-1002 1000-1002
Usanus xajxayakamej   comb. nov.  Pinedo-Escatel, J. Adilson & Dietrich, Christopher H., 2020, Nomenclatural changes and two new species in the leafhopper genus Usanus DeLong (Hemiptera: Cicadellidae) with notes on conservation status, Zootaxa 4822 (4), pp. 567-576 : 575 575
Devolana xajxayakamej   sp. nov.  Pinedo-Escatel, José Guadalupe Aguilar-Pérez ı Jorge Adilson & Valdez-Quezada, Brianda Catalina, 2019, Three new Mexican species of the endemic Athysanini leafhopper genus Devolana DeLong (Hemiptera: Cicadellidae) from the tropical dry forest, Journal of Natural History 53 (33), pp. 2039-2056 : 2039-2056 2039-2056
Ibotyporanga xakriaba   sp. nov.  Huber, Bernhard A., Meng, Guanliang, Král, Jiří, Ávila Herrera, Ivalú M. & Carvalho, Leonardo S., 2024, Diamonds in the rough: Ibotyporanga (Araneae, Pholcidae) spiders in semi-arid Neotropical environments, European Journal of Taxonomy 963, pp. 1-169 : 55-59 55-59
Coleoptera   new species  Morón, Miguel Ángel, 2015, Especies nuevas de Phyllophaga Harris (Coleoptera: Melolonthidae; Melolonthinae) del Oriente de México, Dugesiana 22, No. 2, pp. 81-94 : 87 87
Xalama   gen. nov.  Bartlett, Charles R. & Kennedy, Ashley C., 2018, A review of New World Malaxa (Hemiptera: Fulgoroidea: Delphacidae), Zootaxa 4441 (3), pp. 511-528 : 520 520
Xalama microstyla     Bartlett, Charles R. & Kennedy, Ashley C., 2018, A review of New World Malaxa (Hemiptera: Fulgoroidea: Delphacidae), Zootaxa 4441 (3), pp. 511-528 : 520-523 520-523
Atrichobrunettia (Polibrunettia) xalapaensis     Ibáñez-Bernal, Sergio & Durán-Luz, Juana, 2022, An actualized catalogue of the Psychodidae (Diptera) of Mexico and their known distribution by state, Zootaxa 5104 (3), pp. 347-408 : 377 377
Atrichobrunettia (Polibrunettia) xalapaensis   sp. nov.  Ibáñez-Bernal, Sergio, 2009, First record of the genus Atrichobrunettia Satchell in Mexico, with the description of a new species (Diptera, Psychodidae, Psychodinae), Zootaxa 2306, pp. 59-65 : 60-64 60-64
Atrichobrunettia xalapaensis     Vega-Badillo, Viridiana, Hernández-Ortiz, Vicente, Valenzuela-González, Jorge E., Novelo-Gutiérrez, Rodolfo, Ibáñez-Bernal, Sergio & Reynoso-Velasco, Daniel, 2024, Catalogue of the types of Diptera, Hemiptera, Hymenoptera, Odonata, and Strepsiptera in the IEXA Entomological Collection at Instituto de Ecología, A. C, Zootaxa 5551 (3), pp. 401-452 : 420 420
Pimpla xalapana   sp. nov.  Khalaim, Andrey I. & Ruíz-Cancino, Enrique, 2021, Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: genera Apechthis Förster, Itoplectis Förster and Pimpla Fabricius, Zootaxa 5071 (4), pp. 451-491 : 485-487 485-487
Probles (Euporizon) xalapana   sp. nov.  Khalaim, Andrey I. & Ruíz-Cancino, Enrique, 2019, Mexican species of the genus Probles Förster (Hymenoptera: Ichneumonidae: Tersilochinae), Zootaxa 4619 (2), pp. 201-230 : 225-227 225-227
Conostegia xalapensis     Alvear, Marcela, Ocampo, Gilberto, Parra-O, Carlos & Almeda, Eduino Carbonó And Frank, 2015, Melastomataceae of the Sierra Nevada de Santa Marta (Colombia): floristic affinities and annotated catalogue, Phytotaxa 195 (1), pp. 1-30 : 20 20
Eugenia xalapensis     Uc Gala, Victor C., Valdemarin, Karinne Sampaio, Lucas, Eve, Negrão, Raquel & Mazine, Fiorella F., 2023, Eugenia (Myrtaceae) from Mexico: checklist, distribution, and conservation assessments, Phytotaxa 583 (2), pp. 99-140 : 130 130
Agaricus xalapensis   sp. nov.  Guzmán-Guillermo, Jorge, Chen, Jie, Enríquez-Bedolla, José Carlos, Ortega, Iván Oros-, Zetina-Córdoba, Pedro, Núñez-Pastrana, Rosalía & Llarena-Hernández, Régulo Carlos, 2024, Morphological characteristics and phylogenetic analyses revealed two new species of Agaricus subg. Minoriopsis from Mexico, Phytotaxa 655 (1), pp. 65-78 : 70-74 70-74
Blepharoneura xalapensis   sp. nov.  Hernández-López, Mónica & Hernández-Ortiz, Vicente, 2024, Descriptions of six new Mexican species of the genus Blepharoneura (Diptera, Tephritidae) belonging to the femoralis species-group, Zootaxa 5448 (2), pp. 225-247 : 232-234 232-234
Copestylum xalapensis   sp. nov.  Rotheray, G. E., Hancock, E. G. & Marcos-García, M. A., 2007, Neotropical Copestylum (Diptera, Syrphidae) breeding in bromeliads (Bromeliaceae) including 22 new species, Zoological Journal of the Linnean Society 150 (2), pp. 267-317 : 279-280 279-280
Blepharoneura xalapensis     Vega-Badillo, Viridiana, Hernández-Ortiz, Vicente, Valenzuela-González, Jorge E., Novelo-Gutiérrez, Rodolfo, Ibáñez-Bernal, Sergio & Reynoso-Velasco, Daniel, 2024, Catalogue of the types of Diptera, Hemiptera, Hymenoptera, Odonata, and Strepsiptera in the IEXA Entomological Collection at Instituto de Ecología, A. C, Zootaxa 5551 (3), pp. 401-452 : 412 412
Conostegia xalapensis     Kriebel, Ricardo, 2016, A Monograph of Conostegia (Melastomataceae, Miconieae), PhytoKeys 67, pp. 1-326 : 232-237 232-237

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Specimens