Van Duzee, E. P. 1937. The Hemiptera of the Templeton Crocker Expedition to Polynesia in 1934-1935. Proceedings of the California Academy of Sciences (Ser. 4) 22: 111-126.
Fennah, R. G. 1967. Fulgoridae of the Galápagos Archipelago. Proceedings of the California Academy of Science, fourth series 35(4): 53-102. http://biodiversitylibrary.org/page/15858154
Philatis crockeri (Van Duzee, 1937) = Euthiscia crockeri Van Duzee, 1937: 119. = Philatis crockeri (Van Duzee, 1937); comb. by Fennah 1967: 85; see also Gnezdilov 2012.
Reference
Gnezdilov, V. M. 2012. On the composition and distribution of the family Acanaloniidae Amyot et Serville (Homoptera, Fulgoroidea). Entomologicheskoe obozrenie 91(3): 157–161. [In Russian; translated to English in Entomological Review (2013) 93(1): 69-72]