Literature

Authors	Year	Title
C. E. Beltrán, Vargas-R, J. Manuel, Freytag, P. H.	2012	A new species of Paracatua Melichar (Cicadellidae: Cicadellinae) from Colombia
D. M. DeLong, Freytag P. H.	1975	Studies of the Gyponinae: A new genus, Hecalapona, and thirthy-eight new species
D. M. DeLong	1972	Studies of the Gyponinae: A Key to the Known Genera and Descriptions of Five New Genera
D. M. DeLong, Freytag P. H.	1972	Two New Subgenera and Two New Species of Gyponana (Homoptera: Cicadellidae)
D. M. DeLong, Freytag P. H.	1969	Studies of the World Gyponinae (Homoptera: Cicadellidae): A Synopsis of the Genus Clinonaria
D. M. DeLong	1967	Studies of the Gyponinae : Two New Genera, Chilenana and Chilella (Homoptera: Cicadellidae)
D. M. DeLong, Freytag P. H.	1967	Studies of the Gyponinae : Two New Genear, Chilenana and Chilella (Homoptera: Cicadellidae)
D. M. DeLong, Freytag P. H.	1966	Studies of the Gyponinae : A Synopsis of the Genus Hamana Delong (Homoptera: Cicadellidae)
D. M. DeLong, Freytag P. H.	1966	Studies of the Gyponinae : a Synopsis of the Genus Acusana Delong (Homoptera: Cicadellidae)
D. M. DeLong, Freytag P. H.	1963	Studies of the Gyponinae. 2, A New Genus– Zonana (Homoptera: Cicadellidae)
D. M. DeLong, Freytag P. H.	1963	Studies of the Gyponinae. 1, The Genus Marganana Delong (Homoptera: Cicadellidae)
P. H. Freytag	2015	Four new genera and nine new species related to the genus Hecalapona (Hemiptera; Cicadellidae: Gyponinae)
P. H. Freytag	2014	Ten new species in the genus Fusigonalia from South America (Hemiptera: Cicadellidae: Cicadellini)
P. H. Freytag	2013	A new leafhopper genus, Hirsutapona, including nineteen new species from Central and South America (Hemiptera: Cicadellidae: Gyponinae)
P. H. Freytag	2012	A new genus Hyperapona, including fourteen new species (Hemiptera: Cicadellidae: Gyponinae)
P. H. Freytag	2011	A new genus and five new species of of Agallinae (Hemiptera: Cicadellidae) from Central America
P. H. Freytag	2009	Nine new species of Coronigoniella from Colombia and Peru, South America (Hemiptera: CIcadellidae: Cicadellinae)
P. H. Freytag	2005	Five new species of Acrulogonia leafhoppers (Homoptera: Cicadellidae) from Colombia
P. H. Freytag	2003	Corrections and additions to the genus Agallia (Homoptera, Cicadellidae, Agalliinae) of the Americas
P. H. Freytag, DeLong D. M.	1968	Corrective Note on Gypona Decorata Fowler
P. W. Lozada, Freytag P. H.	2010	Tres nuevas especies y nuevos registros de Ladoffa de Panama (Insecta: Hemiptera: Cicadellidae: Cicadellinae)
P. W. Lozada, Freytag P. H.	2010	Tres nuevas especies y nuevos registros de Ladoffa de Panamá (Insecta: Hemiptera: Cicadellidae: Cicadellinae)

Authors