ELLIOTT ET AL.: THE CAVE FAUNA OF CALIFORNIA 
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Tomocerus vulgaris (Tullberg) 
Records: Plumas Co.: Juniper Cave. Tuolumne Co.: McLean’s Cave. 
Comment: This species has been reported from caves in Pennsylvania and Wisconsin. It is abundant on the surface through¬ 
out much of the United States and Europe. 
Bibliography: Christiansen (2015). 
ORDER SYMPHYPLEONA 
Undetermined 
Records: Mariposa Co.: Spider Cave. 
Family Arrhopalitidae 
Undetermined 
Records: Siskiyou Co.: Caldwell Ice Caves; Catacombs Cave; Coral Reef Cave; Valentine Cave. 
Bibliography: Taylor and Krejca (2006). 
Pygmarrhopalites sp. 
Record: Mariposa Co.: Spider Cave. 
Bibliography: Zara Environmental (2009). 
Pygmarrhopalites caecus (Tullberg) 
Record: Siskiyou Co.: Coral Reef Cave. 
Comment: This species is world-wide in distribution. 
Bibliography: Zeppelini, Taylor, and Slay (2009). 
Family Dicyrtomidae 
Ptenothrix sp. 
Record: Mariposa Co.: Indian Cave; Spider Cave. 
Bibliography: Zara Environmental (2009). 
Ptenothrix californica Christiansen and Bellinger 
Record: Amador Co.: Violin Cave. 
Comment: This species is otherwise known from the surface in Fresno and Los Angeles counties, California. 
Ptenothrix maculosa (H. Schott) (troglophile) 
Records: Calaveras Co.: Barren Cave; Coral Cave. Mariposa Co.: Sprinkle Cave. Santa Cruz Co.: Empire Cave; Stump 
Cave. Shasta Co.: Samwel Cave. Tuolumne Co.: Crystal Palace. 
Comment: This primarily epigean species is known from the surface in California, Oregon, Washington, and British 
Columbia. 
Bibliography: Briggs and Ubick (1988); Christiansen (2015). 
Ptenothrix marmorata (Packard) (troglophile) 
Records: Calaveras Co.: Clutch Cave; Music Hall Cave; Porcupine Cave. 
Comment: This species occurs throughout much of the United States but is not infrequently taken from caves. 
Bibliography: Christiansen (2015); McEachem and Grady (1978). 
Family Katiannidae 
Sminthurinus sp. 
Record: Mariposa Co.: Spider Cave. 
Bibliography: Zara Environmental (2009). 
Family Sminthuridae 
Undetermined 
Records: Amador Co.: Rippled Cave; Skeleton Cave. Calaveras Co.: Grapevine Gulch Cave. El Dorado Co.: Crystal 
Cosumnes Cave. Fresno Co.: Bear Den Cave; Beauty Cave; Boyden Cave; Windy Cliff Cave. Inyo Co.: unnamed lava 
tubes near Crater Mountain. Mariposa Co.: Indian Rock Shelter. Napa Co.: Clay Cave. Plumas Co.: Juniper Cave. Shas- 
