The Auchenorrhyncha fauna of Andorra is insufficiently known. Only twelve species have been published in several publications. Mongolojassus andorranus is an endemic species, only known from Pas de la Casa, where it can be easily collected on the grasslands. Several additional species were collected from Andorra, which still have to be published, for example, Dicranotropis divergens and Bilusius serratus. Those are not yet added to the species list here.

References

• Booij, C.J.H. 1982. Biosystematics of the Muellerianella complex (Homoptera, Delphacidae) in western Europe – patterns of variation, interrelations and speciation. Proefschrift, Landbouwhogeschool Wageningen: 125 pp.
• Della Giustina, W. 1989. Homopteres Cicadellidae. Vol 3 - Complements aux ouvrages d'Henri Ribaut. Faune de France 73: 310 pp.
• Della Giustina, W. 2019. Les Delphacidae de France – et des pays limitrophes (Hemiptera, Fulgoromorpha). Fauna de France 100: 832 pp.
• Gnezdilov, V.M., Drosopoulus, S. & Wilson, M. R. 2004. New data on taxonomy and distribution of some Fulgoroidea (Homoptera, Cicadina). Zoosystematica Rossica 12(2), 2003: 217-223.
• Gnezdilov, V.M., Holzinger, & M.R. Wilson 2014. The Western Palaearctic Issidae (Hemiptera, Fulgoroidea): an illustrated checklist and key to genera and subgenera. Proceedings of the Zoological Institute RAS 318 (Supplement 1): 124 pp.  
• Maczey, N. 2004. The Auchenorrhyncha communities of chalk grassland in southern England. Dissertation, Universität Koblenz-Landau: 230 pp.
• Nast, J. 1972. Palaerctic Auchenorrhyncha (Homptera). An annotated checklist. Polish Scientific Publishers, Warszawa: 550 pp.
• Lindberg, H. 1963. Jassargus (Sayetus) andorranus n. sp. (Cicadina, Jassidae). Notulae Entomologicae 43(4): 152-154.