@article{journal,
author = {Quartau, J. A. and Borges, P. A. V.},
title = {On the colour polymorphism of Philaenus spumarius (L.) (Homoptera, Cercopidae) in Portugal},
year = {1997},
volume = {20.2},
pages = {19--30},
journal = {Miscel·l{\`a}nia Zool{\`o}gica},
keywords = {Philaenus spumarius, Colour polymorphism, Thermal selection, Portugal}
}