X.  Espadaler and Castillo, A., ?Monomorium carbonarium (F. Smith) surviving indoors in NE Spain (Hymenoptera, Formicidae)?, Orsis, vol. 28, pp. 149-151, 2014.

S.  Rey and Espadaler, X., ?Area-wide management of the invasive garden ant Lasius neglectus (Hymenoptera: Formicidae) in northeast Spain?, Journal of Agricultural and Urban Entomology, vol. 21, pp. 99-112.

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

X.  Espadaler, ?The ants of El Hierro (Canary Islands)?, R. R.  Snelling, Fisher, B. L., and Ward, P. S., Eds. Gainesville, FL, 690 p.: Memoirs of the American Entomological Institute, vol. 80, 2007, pp. 113-127.

X.  Espadaler and Bernal, V., ?Exotic ants in the Canary Islands, Spain (Hymenoptera, Formicidae)?, Vieraea, vol. 31, pp. 1-7, 2003.

X.  Espadaler and Bernal, V., ?Lasius neglectus?, CREF, UAB, 2004.

X.  Espadaler and Rey, S., ?Biological constraints and colony founding in the polygynous invasive ant Lasius neglectus (Hymenoptera, Formicidae)?, Insectes Sociaux, vol. 48, pp. 159-164, 2001.