The new species Eustenomacidius (Caucasohelops) egeuniversitatis sp. n. is described from Southeastern Anatolia (Van Province). The species differs from two other representatives of the subgenus Caucasonotus Nabozhenko, 2006 by the absence of temple grooves (lower aspect of eye having a posterior ventral groove) and shiny body without microsculpture. It is the first record of the genus in Turkey. Data on bionomics and a key to species of the subgenus Caucasonotus are given. Mitochondrial cytochrome oxidase I (cox1) barcoding regions of type specimens were also sequenced and uploaded to GenBank.