Guyalna aldegondae Kuhlgatz 1902
Creators: name: Sanborn, Allen F.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadidae
Guyalna
Guyalna aldegondae

description: Guyalna aldegondae Kuhlgatz, 1902 (in Kuhlgatz & Melichar, 1902) rev. stat., n. comb.
Fidicina aldegondae Kuhlgatz, 1902 (in Kuhlgatz & Melichar, 1902): 266 (Corcovado, Rio de Janiero, Brazil). rev. stat.
REMARKS. Another species missing from the Brazilian cicada fauna list in Nunes et al. (2023) that requires additional attention is Fidicina aldegondae Kuhlgatz, 1902 (in Kuhlgatz & Melichar, 1902). Distant (1906) synonymized the species with Guyalna viridifemur (Walker, 1850) without comment. However, F. aldegondae has been treated as valid (Sanborn 2013) and not a junior synonym of G. viridifemur (e.g. Sanborn 2016c; 2019a) but an explanation and official status revision is lacking so it will be addressed here.
The deposition location of the holotype is not listed with the original description (Kulgatz & Melichar 1902) and it was not found when the museum in Berlin was visited. The drawings and description of F. aldegondae in Kulgatz & Melichar (1902) suggest it is a different species from G. viridifemur (see image in Sanborn 2016c). The head is narrower, the abdomen marked with less piceous, the posterior timbal cavity margin is curved when viewed from the dorsal side, the fore wing costal margin is broader with obvious spines and a significant curve, the fore wing radiomedial crossvein forms a more oblique angle, the proximal portion of median vein 1 is wavy instead of smoothly curved, the fore wing cubitus anterior vein is approximately straight instead of arched, and the fore wing basal cell is clouded instead of clear in F. aldegondae. As a result, Fidicina aldegondae Kulgatz, 1902 (in Kulgatz & Melichar, 1902) rev. stat. is removed from junior synonymy and is considered to be a valid species.
The drawings in Kulgatz & Melichar (1902) also clearly show three tarsomeres on both of the legs illustrated so that the species cannot remain in the genus Fidicina. Following the diagnosis in Sanborn (2016c), the species has the following characteristics of the genus Guyalna Boulard & Martinelli, 1996: head about as wide as the mesonotum, eyes slightly protruding beyond anterior pronotum, postclypeus centrally sulcate, rounded anteriorly, rostrum reaching to sternite II; pronotum shorter than mesonotum, trapezoidal with anterior margin narrower than lateral margins of pronotal collar, metanotum partially visible laterally by wing groove, cruciform elevation smoothly arched on posterior; fore wings and hind wings hyaline, with eight and six apical cells, respectively; fore femora with primary and secondary spines angled to one another, and a small tertiary spine, tarsi three-segmented; male operculum forming an approximate right triangle covering the tympanal cavity reaching to sternite II, opercula not meeting along midline; abdominal segments with parallel sides to tergite 4 where the abdomen begins narrowing posteriorly to the genitalia, epipleurites reflexed to ventral surface; timbal cover with rounded anterior apex and concave anteromedial margin. Therefore, Fidicina aldegondae Kulgatz, 1902 (in Kulgatz & Melichar, 1902) rev. stat. is reassigned to become Guyalna aldegondae (Kulgatz, 1902 in Kulgatz & Melichar, 1902) rev. stat., n. comb.
DISTRIBUTION. The species is known only from Brazil (Metcalf 1963a).
description: Published as part of Sanborn, Allen F., 2023, Resolving taxonomic issues of cicadas (Hemiptera: Cicadidae) including new combinations, new synonymies, and revised status, with updates on the diversity of the Brazilian cicada fauna and new records for four South American countries, pp. 339-362 in Zootaxa 5318 (3) on page 354, DOI: 10.11646/zootaxa.5318.3.2, http://zenodo.org/record/8166896