Strong, Ellen E.; Garner, Jeffrey T.; Johnson, Paul D.; Whelan, Nathan V.
A systematic revision of the genus Juga from fresh waters of the Pacific Northwest, USA (Cerithioidea, Semisulcospiridae)
Fig. 8. Shell morphology of Juga acutifilosa (Stearns, 1890). A–C. Type material. D–J. Sequenced vouchers. A. Melania acutifilosa Stearns, 1890. Lectotype, USNM 60596. B. Goniobasis laurae Goodrich, 1944. Paratype, MCZ 221159. C. Goniobasis interioris Goodrich, 1944. Paratype, MCZ 221163. D–E. Topotypic (Melania acutifilosa Stearns, 1890). D. USNM 1413153. E. USNM 1413156. F. Topotypic (Goniobasis laurae Goodrich, 1944), USNM 1413201. G. Topotypic (Goniobasis interioris Goodrich, 1944), USNM 1413191. H. USNM 1239161. I. USNM 1295048. J. USNM 1413073. K. USNM 854634. L. USNM 1152451. M. CASIZ 183594. N. CASIZ 183597. O. UF 520310. P. USNM 858178. Q. USNM 874271. R–S. CASIZ 183594. Scale bar = 1 cm.
Fig. 9. Radular morphology of Juga acutifilosa (Stearns, 1890). A. View of the anterior radular ribbon. B. Detail of cutting edge of rachidian and lateral teeth. C. Detail of lateral teeth cusps. D. Detail of rachidian cusps. E. Inner and outer marginal teeth. F. Detail of inner and outer marginal teeth cusps. (D and F modified from Strong & Frest 2007). Scale bars: A = 200 µm; B–C = 100 µm; D = 50 µm; E–F = 20 µm.
Fig. 7. Distribution maps. A. Juga plicifera (I. Lea, 1838). B. Juga acutifilosa (Stearns, 1890). C. Juga bulbosa (A. Gould, 1847). Red stars, type localities; black dots, sequenced specimens; gray dots, unsequenced museum material. Abbreviations: CA = California; NV = Nevada; OR = Oregon; WA = Washington.