Domahovski, AC; Cavichioli, RR 2023. Phylogenetic analysis and revision of the leafhopper genus Acuera DeLong & Freytag (Hemiptera: Cicadellidae: Gyponini) based on morphological data -
ARTHROPOD SYSTEMATICS & PHYLOGENY 81 79-164 DOI: 10.3897/asp.81.e81961

Freytag, PH 2018. A new genus Xuthopona (Hemiptera; Cicadellidae; Gyponinae), and fourteen new species from South America -
TRANSACTIONS OF THE AMERICAN ENTOMOLOGICAL SOCIETY 144 522-538

Freytag, PH 2015. Four New Genera and Nine New Species Related to the Genus Hecalapona (Hemiptera: Cicadellidae: Gyponinae) -
ENTOMOLOGICAL NEWS 124 4 245-264

Freytag, PH 2013. A New Leafhopper Genus, Hirsutapona, Including Nineteen New Species from Central and South America (Hemiptera: Cicadellidae: Gyponinae) -
JOURNAL OF THE KANSAS ENTOMOLOGICAL SOCIETY 86 3 206-225 DOI: 10.2317/JKES121115.1

Freytag, PH 2012. The Genera Carapona and Spinanella, Including Four New Species (Hemiptera: Cicadellidae: Gyponinae) -
JOURNAL OF THE KANSAS ENTOMOLOGICAL SOCIETY 85 4 285-294 DOI: 10.2317/0022-8567-85.4.285

Freytag, PH 1992. A New Species of the Genus Largulara (Homoptera: Cicadellidae) -
TRANSACTIONS OF THE KENTUCKY ACADEMY OF SCIENCES 53 3-4 139-140

Freytag, PH 1990. A new species of Zonana (Homoptera: Cicadellidae) from Venezuela -
ENTOMOLOGICAL NEWS 101 2 93-94

Freytag, PH 1989. Three New Genera and Six New Species of South American Gyponine Leafhoppers (Homoptera: Cicadellidae)r -
TRANSACTIONS OF THE KENTUCKY ACADEMY OF SCIENCES 50 1-2 1-8