The genus Jocatoa is characterized by an thallus, spores that exhibit a strong violet color when treated with iodine, and a chemistry belonging to the stictic acid complex. This monospecific genus closely resembles species of Diorygma in terms of its ecorticate thallus, spore type, and chemistry. However, it differs by having simple, thin paraphysis tips that do not form an epithecium, unlike the reticulately branched, anastomosed, and thickened paraphysis tips in Diorygma that form a clear epithecium.
