Portugal - Azores
According to Booij (1982), the population of Muellerianella on the Azores needs to be studied in more detail, since it might be a distinct species.
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
- Borges P. A. V., Costa A. N. A., Cunha R., Gabriel R., Gonçalves V., Martins A. F., Melo I., Parente M., Raposeiro P., Rodrigues P., Santos R. S., Silva L., Vieira P. & Vieira V. 2010. Listagem dos organismos terrestres e marinhos dos Açores (A list of the terrestrial and marine biota from the Azores). 432 pp. Principia, Cascais (Portugal).
- Hoch, H. 1991. Cave-dwelling Cixiidae (Homoptera Fulgoroidea) from the Azores. Bocagiana 149: 1-9.
- Remane R. 1975. Eine bisher unbeschriebene Art der Gattung Javesella Fennah (Homopt. Cicadina: Delphacidae) von den Azoren. Stuttgarter Beitrage zur Naturkunde ser. A 269: 1-6.
- Remane, R. & Asche, M. 1979. Evolution und Speziation der Gattung Cixius Lattreille 1804 (Homoptera Auchenorrhyncha Fulgoromorpha Cixiidae) auf der Azorischen Inseln. Marburger Publications in Entomology 1(2): 264 pp.
- Quartau, J. A. 1980. A contribution to the knowledge of the Cicadellidae (Homoptera: Auchenorrhyncha) of the Azores. Bocagiana 49: 1-3.
- Quartau, J. A. & Borges, P. 2013. A new species of the genus Aphrodes Curtis from the Azores (Hemiptera, Cicadellidae). Bocagiana 213: 1-11.
- Quartau, J. A., Borges P. A. V. & André G. 1992. Philaenus spumarius (Linnaeus, 1758) new to the Azores (Hemiptera, Auchenorrhyncha, Cercopidae). Boletim da Sociedade Portuguesa de Entomologia 3(1): 129-136.
