A Revision of the Endemic Californian Spider Genus Titiotus Simon (Araneae, Tengellidae) Author Platnick, Norman I. Author Ubick, Darrell text American Museum Novitates 2008 2008-04-09 3608 1 1 36 http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1206%2F0003-0082(2008)3608%5B1%3AAROTEC%5D2.0.CO%3B2 journal article 10.1206/0003-0082(2008)3608[1:AROTEC]2.0.CO;2 0003-0082 5389369 Titiotus tahoe , new species Figures 32–36 ; map 2 TYPE : Male holotype taken at an elevation of 6000 ft at Tahoe City, Placer Co. , California ( July 10, 1952 ; W. Gertsch ), deposited in AMNH . ETYMOLOGY: The specific name is a noun in apposition taken from the type locality. DIAGNOSIS: Males and females have not been collected together but are matched here on the basis of geography; males can easily be recognized by the tibial apophysis consisting of four prongs (fig. 34), females by the thumbshaped median lobe situated posteriorly on the epigynal septum (fig. 35). MALE: Total length 8. Coloration as in T. californicus . Leg spination: femora: I r1-2-1; II p2-1-1, r1-1-2; III r1-2-2; IV p1-2-1; tibiae: I, II d1-0-1, v4-4-4, r1-1-0; III, IV r0-1-1; metatarsi: I p1-1-0, r0-1-0; II p1-1-0, r1-1-0; III, IV p1-2-2. Embolus expanded prolaterally just beyond base; median apophysis long, with large, subdistal projection; tibial apophysis with four prongs, only two most distal sharing common base (figs. 32–34). FEMALE: Total length 19. Coloration as in T. californicus . Leg spination: femora: II, III r1-1-2; tibiae: I, II r1-1-0; III r0-1-1; IV p1-0-1; metatarsi: II p1-1-0, r1-1-0; III p1-2-2. Epigynal septum with thumb-shaped median lobe occupying posterior fifth of septum length; posterior ducts oblique (figs. 35, 36). OTHER MATERIAL EXAMINED: United States : CALIFORNIA : El Dorado Co. : Placerville , Jan. 1995 ( UCR ), 13; 5 mi N Pollock Pines , July 6, 1958 ( W. Gertsch , V . Roth , AMNH ), 13♀ ; Snowline Camp , July 15, 1948 ( P. Hurd , AMNH ), 13. Nevada Co. : S fork, Yuba River , 8 mi N Nevada City , Aug. 3, 1953 ( W., J. Gertsch , AMNH ), 5♀ . Placer Co. : Tahoe City , July 10, 1952 , elev. 6000 ft ( W. Gertsch , AMNH ), 13. Yuba Co. : Brown’s Valley , June 28, 2004 ( J. Crummett , UCR ), 13 . DISTRIBUTION: Known only from four counties in the Sierras (map 2).