Armored Snail

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.

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 7.Shells, opercula and radula, Pyrgulopsis sanchezi sp. n. A Holotype, USNM 850333 B–D Shells, USNM 853505, USNM 1204755, USNM 853501 E, F Opercula (outer, inner sides), USNM 883361 G Portion of radular ribbon, USNM 883361 H Central teeth, USNM 883361 I Lateral and inner marginal teeth, USNM 883361. Scale bars A–D 1.0 mm; E, F 100 µm; G 20 µm; H, I 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.

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 8.Shells, opercula and radula, Pyrgulopsis micrococcus. A Lectotype, ANSP 67279a B–D Shells, USNM 1004185, USNM 905091, USNM 1004183 E, F Opercula (outer, inner sides), USNM 847246 G Portion of radular ribbon, USNM 847246 H Central teeth, USNM 847246 I Lateral and inner marginal teeth, USNM 847246. Scale bars A–D 1.0 mm; E, F 250 µm; G–I 10 µm.

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

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.