Pyrgulopsis perforata Hershler, Liu & Bradford 2013

Figure 4.Penes (dorsal, ventral surfaces). A, B Pyrgulopsis licina sp. n., USNM 850346 C, D Pyrgulopsis perforata sp. n., BellMNH 20891 E, F Pyrgulopsis sanchezi sp. n., USNM 883361 G, H Pyrgulopsis micrococcus, BellMNH 20663 I, J Pyrgulopsis turbatrix, USNM 860699 K, L Pyrgulopsis turbatrix, USNM 883373. Scale bars A–C 250 µm; D–L 500 µm. Pd penial duct Pf penial filament Pl penial lobe Tg terminal gland.

Figure 6.Shells, opercula and radula, Pyrgulopsis perforata sp. n. A Holotype, USNM 853507 B, C Shells, USNM 1204734 D, E Opercula (outer, inner sides), USNM 857965 F Portion of radular ribbon, USNM 857965 G Central teeth, USNM 857965 H Lateral and inner marginal teeth, USNM 857965. Scale bars A–C 1.0 mm; D, E 200 µm; F 20 µm; G, H 10 µm.

Figure 2.Map showing the distribution of mtDNA clades A–F with color codes matching those in Fig. 1.

Figure 5.Photographs of habitats. A Spring south of Clay Pits, Ash Meadows, Nye County, Nevada, type locality of Pyrgulopsis licina sp. n. (photograph taken on 7/VII/1986) B Purgatory Spring, Ash Meadows, Nye County, Nevada, type locality of Pyrgulopsis sanchezi (15/XI/2011) C, D Uppermost spring east of Scotty’s Castle, Death Valley, Inyo County, California, type locality of Pyrgulopsis perforata sp. n. (18/IV/1980).

Figure 1.Bayesian tree based on the combined (COI, NDI) dataset. Nodes having posterior probabilities >95% are identified by filled circles. Specimen codes are from Appendix I.