Espadaler, X. 2007. The ants of El Hierro (Canary Islands). Pp 113-127 in: Snelling, R. R.; Fisher, B. L.; Ward, P. S. (eds.) 2007. Advances in ant systematics (Hymenoptera: Formicidae): homage to E.O. Wilson – 50 years of contributions. Memoirs of the American Entomological Institute 80:690 pp. PDF

Wetterer, J. K.; Espadaler, X.; Wetterer, A. L.; Aguin-Pombo, D.; Franquinho-Aguiar, A. M. 2007. Ants (Hymenoptera: Formicidae) of the Madeiran archipelago. Sociobiology 49 (3):265-297. PDF

Wetterer, J. K.; Espadaler, X.; Ashmole, N. P.; Mendel, H.; Cutler, C.; Endeman, J. 2007. Ants (Hymenoptera: Formicidae) of the South Atlantic islands of Ascension Island, St Helena, and Tristan da Cunha. Myrmecological News 10:29-37. PDF

Cremer, S.; Ugelvig, L. V.; Drijfhout, F. P.; Schlick-Steiner, B. C.; Steiner, F. M.; Seifert, B.; Hughes, D. P.; Schulz, A.; Petersen, K. S.; Konrad, H.; Stauffer, C.; Kiran, K.; Espadaler, X.; d'Ettorre, P.; Aktaç, N.; Eilenberg, J.; Jones, G. R.; Nash, D. R.; Pedersen, J. S.; Boomsma, J. J. 2008. The evolution of invasiveness in garden ants. PLoS ONE 3(12):e3838. 10.1371/journal.pone.0003838 PDF

Herraiz, J. A.; Espadaler, X. 2009. Descripción de la reina de Lasius cinereus Seifert (Hymenoptera:Formicidae). Boletín de la Sociedad Entomológica Aragonesa 44:143-146. PDF

Wetterer, J. K.; Wild, A. L.; Suarez, A. V.; Roura-Pascual, N.; Espadaler, X. 2009. Worldwide spread of the Argentine ant, Linepithema humile (Hymenoptera: Formicidae). Myrmecological News 12:187-194. PDF

García, F.; Espadaler, X.; Echave, P.; Vila, R. 2010. Hormigas (Hymenoptera, Formicidae) de los acantilados de L'avenc de Tavertet (Barcelona, Península Ibérica). Boletín de la Sociedad Entomológica Aragonesa 47:363-367. PDF

Espadaler, X.; Hernando, C. 2012. Redécouverte de Stenamma punctiventre Emery au Maroc. Nouvelle Revue d'Entomologie 28:33-36. PDF

Bernadou, A.; Fourcassié, V.; Espadaler, X. 2013. A preliminary checklist of the ants (Hymenoptera, Formicidae) of Andorra. ZooKeys 277:13-23. PDF

Berville, L.; Hefetz, A.; Espadaler, X.; Lenoir, A.; Renucci, M.; Blight, O.; Provost, E. 2013. Differentiation of the ant genus Tapinoma from the Mediterranean Basin by species-specific cuticular hydrocarbon profiles. Myrmecological News 18:77-92. PDF

Monnin, T.; Espadaler, X.; Lenoir, A.; Peeters, C. 2013. Guide des Fourmis de France. Baume-les-Dame: Éditions Belin, 160 pp.

Espadaler, X.; García, F.; Roig, X.; Vila, R. 2013. Hormigas (Hymenoptera, Formicidae) del Parc del Castell de Montesquiu (Osona, noreste De La Península Ibérica). Boletín de la Sociedad Entomológica Aragonesa 53:223-227. PDF

Espadaler, X.; Gómez, K. 2014. Tetramorium biskrense Forel, 1904 en España y Portugal peninsulares (Hymenoptera, Formicidae). Boletín de la Sociedad Entomológica Aragonesa 55:303-305. PDF

Talavera, G.; Espadaler, X.; Vila, R. 2015. Discovered just before extinction? The first endemic ant from the Balearic Islands (Lasius balearicus sp. nov.) is endangered by climate change. Journal of Biogeography 42:589-601. 10.1111/jbi.12438 PDF

Seifert, B.; Buschinger, A.; Aldawood, A.; Antonova, V.; Bharti, H.; Borowiec, L.; Dekoninck, W.; Dubovikoff, D.; Espadaler, X.; Flegr, J.; Georgiadis, C.; Heinze, J.; Neumeyer, R.; Ødegaard, F.; Oettler, J.; Radchenko, A.; Schultz, R.; Sharaf, M.; Trager, J.; Vesnić, A.; Wiezik, M.; Zettel, H. 2016. Banning paraphylies and executing Linnaean taxonomy is discordant and reduces the evolutionary and semantic information content of biological nomenclature. Insectes Sociaux 63:237-242. 10.1007/s00040-016-0467-1 PDF

Gómez, K.; Martínez, D.; Espadaler, X. 2018. Phylogeny of the ant genus Aphaenogaster (Hymenoptera: Formicidae) in the Iberian Peninsula, with the description of a new species. Sociobiology 65:215-224. 10.13102/sociobiology.v65i2.2099 PDF

Gómez, K.; Espadaler, X. 2018. [Aphaenogaster ulibeli n.sp. attributed to Gómez & Espadaler]. Pp. 217-219 in: Gómez, K.; Martínez, D.; Espadaler, X. 2018. Phylogeny of the ant genus Aphaenogaster (Hymenoptera: Formicidae) in the Iberian Peninsula, with the description of a new species. Sociobiology 65:215-224. PDF

Schär, S.; Talavera, G.; Espadaler, X.; Rana, J. D.; Andersen, A. A.; Cover, S. P.; Vila, R. 2018. Do Holarctic ant species exist? Trans-Beringian dispersal and homoplasy in the Formicidae. Journal of Biogeography 00:1-12. 10.1111/jbi.13380 PDF

Gómez, K.; Lorite, P.; García, F.; Tinaut, A.; Espadaler, X.; Palomeque, T.; Sanllorente, O.; Trager, J. 2018. Differentiating Iberoformica and Formica (Serviformica) with description of the sexual castes of Formica (Serviformica) gerardi Bondroit, 1917 stat. rev. Sociobiology 65 (3):463-470. 10.13102/sociobiology.v65i3.3315 PDF

Barech, G.; Khaldi, M.; Espadaler, X.; Cagniant, H. 2020. Révision taxonomique du genre Messor (Hymenoptera, Formicidae) au Maghreb et description de Messor hodnii sp. n., une nouvelle espèce de fourmi trouvée en Algérie. Revue Suisse de Zoologie 127:9-19. 10.35929/RSZ.0002 PDF

Schifani, E.; Scupola, A.; Menchetti, M.; Bazzato, E.; Espadaler, X. 2021. Morphology and phenology of sexuals and new distribution data on the blind Mediterranean ant Hypoponera abeillei (Hymenoptera, Formicidae). Sociobiology 68 (4):11 pp. e7261. 10.13102/sociobiology.v68i4.7261 PDF

Degueldre, F.; Mardulyn, P.; Kuhn, A.; Pinel, A.; Karaman, C.; Lebas, C.; Schifani, E.; Bračko, G.; Wagner, H. C.; Kiran, K.; Borowiec, L.; Passera, L.; Abril, S.; Espadaler, X.; Aron, S. 2021. Evolutionary history of inquiline social parasitism in Plagiolepis ants. Molecular Phylogenetics and Evolution 155:107016, 6 pp. [online early] 10.1016/j.ympev.2020.107016 PDF

Schär, S.; Talavera, G.; Rana, J. D.; Espadaler, X.; Cover, S. P.; Shattuck, S. O.; Vila, R. 2022. Integrative taxonomy reveals cryptic diversity in North American Lasius ants, and an overlooked introduced species. Scientific Reports 12:5970:1-12. 10.1038/s41598-022-10047-9 PDF

García, F.; Cuesta-Segura, A. D.; Espadaler, X. 2024. Myrmica babiensis sp. nov. (Hymenoptera: Formicidae), a new social parasite from the NW Iberian Peninsula. Annales Zoologici (Warsaw) 74 (1):113-127. 10.3161/00034541ANZ2024.74.1.006 PDF

Gómez, K.; Espadaler, X.; Martínez-Ferrer, M. T.; Campos-Rivela, J. M. 2024. Monomorium monomorium Bolton, 1987 in Spain (Hymenoptera: Formicidae). Butlletí de la Institució Catalana d’Història Natural 88 (2):101-103. 10.2436/20.1502.01.181 PDF