The brown maculations along the dorsum of the abdomen are described as being "diagnostic" of this taxon, however, may be diffuse, greatly reduced or even absent in some individuals.
Males typically have more pronounced brown markings dorsally along the abdomen than do conspecific females.
(much larger sample sizes may be needed to further substantiate these observations)
These cicadas were collected between 7:00-8:00 pm while "singing" the typical T. winnemanna/pruinosus group song.
Rapid EeeeeOoooo - EeeeeeOoooo......
Unlike similar cicadas (other "pruinosus/winnemanna" populations) to the south and west, which may be heard off and on during the afternoon 'til sunset, our local populations in Wake Co., NC seem to be active for a relatively short time in the late evening, ceasing to call before dark. It's also interesting that some of these populations seem to pulse in choruses following a "wave pattern" from block to block as they sing across neighborhoods.
For original descriptions and information on the T. pruinosus group (incl. pruinosus, winnemanna & latifasciatus), please refer to the on-line book by Davis (Pages 8-10, Photos of all three can be reviewed on Plate 2)- LINK below
North American cicadas (1921)
Author: Davis, William T. (William Thompson), 1862-1945; New York Entomological Society. Journal
Volume: v. 1
Subject: Cicada (Genus)
Publisher: Staten Island, N.Y.
Possible copyright status: NOT_IN_COPYRIGHT
Call number: 39088007647845
Digitizing sponsor: Smithsonian
Book contributor: Smithsonian Institution Libraries
Title varies: vol. 2, "American cicadas."
A collection of papers published, with a single exception, in the Journal of the New York Entomological Society from 1915 to 1942
[v. 1] From 1915 to 1921.--v. 2. From 1922 to 1942