Caucasocressa taochorum, Hausdorf, 2003

Hausdorf, Bernhard, 2003, Revision of the genus Caucasocressa from the eastern Pontic Region (Gastropoda: Hygromiidae), Journal of Natural History 37 (21), pp. 2627-2646 : 2642

publication ID	https://doi.org/ 10.1080/00222930210158762
DOI	https://doi.org/10.5281/zenodo.5271030
persistent identifier	https://treatment.plazi.org/id/2E7D87AB-9412-FFD1-FDD4-FD99FCE6FB52
treatment provided by	Felipe
scientific name	Caucasocressa taochorum
status	sp. nov.

Treatment

Caucasocressa taochorum View in CoL sp. n.

(figures 2, 20)

Shell (figure 20). Indistinguishable from C. joannis .

Measurements. Tortum 3 km towards Narman (N =20); D= 13.1–17.3 mm, B = 15.8 mm; H= 7.8–10.9 mm, B = 9.6 mm; D/H=1.50–1.87, B =1.64.

Remarks. Caucasocressa taochorum differs from the related species in the ratio epiphallus: flagellum (see table 2), which is higher than that of the geographically neighbouring C. tortumensis , but lower than that of C. schmalzi and C. phasiana . It differs from C. tortumensis and C. phasiana also in the higher epiphallus: vagina ratio and from C. schmalzi in the distinctly narrower umbilicus, taking only 7–11% of the shell breadth.

Etymology. The species epithet refers to the occurrence of the species in the land of the ancient tribe Taochi ( taochorum , genitive plural).

Type locality. V. Erzurum: Tortum 3 km towards Narman , rocks, GE26 .

Distribution and material (figure 2). Caucasocressa taochorum is known only from the type locality east of Tortum.

Turkey: V. Erzurum: Tortum 3 km towards Narman, rocks, GE26 (det. anat.; holotype NNM, leg. H. Menkhorst, 31 July 1990, measurements: D= 17.2 mm, H= 10.1 mm; paratypes MEN; ZMH 2902 View Materials ) .