Dorisiana Metcalf, 1952

Sanborn, Allen F., 2024, The cicada (Hemiptera: Cicadidae) fauna of the Lesser Antilles sensu lato with the description of two new species, two new combinations, and a key to species, Zootaxa 5497 (1), pp. 33-69 : 45

Genus Dorisiana Metcalf, 1952

Dorisia Delétang 1919: 83 .

Dorisiana Metcalf 1952 nom. nov. pro Dorisia Delétang, 1919 nec Dorisia Möschler, 1883: 351 .

Type species. Cicada semilata Walker 1850: 122 (St. Lucia, Antilles and Cayenne, French Guiana).

Remarks. There has been significant confusion as to the morphological characters that define the genus Dorisiana because of a lack of a full generic description as it was introduced in a taxonomic key ( Delétang 1919). Delétang (1919) listed only a cruciform elevation notched in the form of a more or less open semicircle when the genus was introduced. Boulard & Martinelli (1996) added a tapered, triangular timbal cover as characteristic of Dorisiana species in their key. The genus is in need of a complete revision.

Diagnosis. Within the Guyalnina found in the Lesser Antilles, species of Dorisiana are distinguished by having a combination of parallel radial and radiomedial crossveins, a head as wide as or slightly wider than the mesonotum, a head lacking prominent stylate and anteriorly extended eyes, eyes that slightly projecting laterally beyond the anterior edges of the pronotum, triangular timbal covers, timbal covers with a ventral margin that is angled dorsally with respect to the long body axis, and male opercula that generally form a right triangle.

Species of Dorisiana are similar in general appearance to species of Guyalna but can be distinguished by the eyes not extending beyond the lateral edges of the pronotum, the triangular timbal covers, the timbal cover ventral margin is angled dorsally to the long body axis rather than being parallel to the long body axis as it is in species of Guyalna , and the lateral lobe of the uncus does not extend as far as in speices of Guyalna ( Sanborn 2016b) .