Borges, P. A., Rodrigues, A. S., Silva, S. E., Seabra, S. G., Paulo, O. S. and Quartau, J. A. (2018) “New data on polymorphism of the meadow spittlebug Philaenus spumarius (L.) (Hemiptera: Aphrophoridae) from the island of São Miguel (Azores)”, Zootaxa. Auckland, New Zealand, 4369(1), pp. 144–150. doi: 10.11646/zootaxa.4369.1.9.