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 marin , new species Figures 77–81 ; map 3 TYPE : Male holotype from Mill Valley , Marin Co. , California ( June 1951 ; D. Hardy ), deposited in AMNH . ETYMOLOGY: The specific name is a noun in apposition taken from the type locality. DIAGNOSIS: Males resemble those of T. humboldt and T. costa but can be distinguished by having the third most ventral prong of the tibial apophysis notched (fig. 79); females have a relatively narrow, ovoid epigynal septum (fig. 80). MALE: Total length 11. Coloration as in T. californicus . Leg spination: femora: I p0-3-1, r1-2-1; II r0-2-1; III r1-1-2; IV r0-1-2; tibiae: I, II d1-0-1, v4-4-4, r1-1-0; III r0-1-1; metatarsi: I, II p1-1-0, r1-1-0; III p1-2-2; IV r1-2-1. Embolus prolaterally expanded near tip, distally narrow; median apophysis with only tiny subdistal projection; most ventral prong of tibial apophysis triangular, middle prong relatively short, distally incised, dorsal prong distally narrowed (figs. 77–79). FEMALE: Total length 11. Coloration as in T. californicus . Leg spination: femora: I–III r1-1-2; IV p1-2-1, r0-1-2; tibiae: I p1-0-0, v4-4- 4, r1-0-0; II d1-0-0, p0-1-1, v4-4-4, r1-1-0; III r0-1-1; metatarsi III p1-2-2. Epigynal septum relatively narrow, ovoid, posterolateral epigynal margins protuberant; posterior ducts oblique (figs. 80, 81). Figs. 77–81. Titiotus marin , new species . 77. Left male palp, prolateral view. 78. Same, ventral view. 79. Same, retrolateral view. 80. Epigynum, ventral view. 81. Same, dorsal view. OTHER MATERIAL EXAMINED: United States : CALIFORNIA : Marin Co. : Burdell Mountain , SE slope, Novato , 38 ° 07 9 48 0 N , 122 ° 34 9 09 0 W , Mar. 16, 1990 , serpentine grassland with adjacent mixed woodland (D. Figs. 82–86. Titiotus costa , new species . 82. Left male palp, prolateral view. 83. Same, ventral view. 84. Same, retrolateral view. 85. Epigynum, ventral view. 86. Same, dorsal view. Ubick, T. Briggs, CDU), 13, Mar. 8, 1991 , oak woodland, under serpentine (D. Ubick, CDU), 1♀ ; Fairfax , Nov. 15, 1974 ( CAS ) , 13, 38 ° 00.0 9 N, 122 ° 36.0 9 W, May 6, 1999 , in house in oak woodland (J. Schweikert , CAS ) , 13, Mt. View Road , Apr. 28, 2004 (D. Giampietro , CAS ) , 13; Marinero Estates , Tiburon Peninsula , Apr. 9, 1994 , serpentine grassland ( D. Ubick , CDU ) , 23; Mill Valley , no date, running on floor in house ( E. Ross , CAS ) , 1♀ , June 1951 (D. Hardy , AMNH ) , 13, June 7, 1954 (H. Leech , AMNH ) , 13, June 17, 1955 , at light (H. Leech , AMNH ) , 13, June 1956 (E. Ross , AMNH ) , 13, Aug. 1956 , in house (E. Ross , AMNH ) , 1♀ ; Apr. 1957 , in empty bathtub at night (E. Ross , AMNH ) , 13, June 14, 1957 , in house (H. Leech , AMNH ) , 13, June 1, 1958 (F. Leech , CAS ) , 13, Sept. 22, 1958 (H. Leech , CAS ) , 13, Oct. 1, 1958 , in house (E. Ross , AMNH ) , 1♀ , Aug. 1, 1963 , in house at night (E. Ross , CAS ) , 1♀ , May 1965 , house basement (E. Ross , CAS ) , 23, 1♀ , June 6, 1988 , in basement of house (C. Hausner , CDU ) , 1♀ , Sept. 5, 1991 (L. Alderson , CDU ) , 1♀ , June 9, 1995 ( V . Roth , CAS ), 13, June 11, 1996 , in house (E. Ross , CAS ) , 13, Aug. 4, 2002 (S. Hall , UCR ) , 1♀ , May 30, 2003 (E. May, UCR ), 1♀ ; Mount Tamalpais , Mar. 14, 1909 (E. VanDyke , CAS ) , 13; Novato , May 6, 1973 ( B. Kessel , CAS ) , 13, Mar. 14, 1982 , under serpentine (D. Ubick , CDU ) , 13, Apr. 25, 1982 , under serpentine float (D. Ubick , CDU ) , 13, Jan. 1990 , under serpentine (D. Ubick , CDU ) , 13; Ring Mountain , Tiburon Peninsula , Apr. 15, 1994 , serpentine grassland ( D. Ubick , J. Boutin , CDU ) , 13 (penultimate, but palp details visible through cuticle); San Anselmo , May 22, 1998 , in house ( CAS ) , 1♀ , Aug. 29, 2000 , in house (D. Burns , CAS ) , 1♀ ; San Geronimo , Jan. 15, 1994 (matured Mar. 24, 1994 ), serpentine grassland ( D. Ubick , J. Boutin , CDU ) , 13; San Rafael , June 28, 1993 , in house ( N. Durighello , CDU ) , 1♀ , mid-May 2000, in house (D. Halliday , UCR ) , 13; N San Rafael , Feb. 6, 1988 (3 matured Mar. 21, 1988 , ♀ Apr. 4, 1988 ), serpentine grassland (D. Ubick , CDU ) , 13, 1♀ ; San Rafael Ridge , San Anselmo , May 27, 1996 ( L. Freihofer , CAS ) , 1♀ ; Sausalito (hilly part), May 23, 2000 , in house ( A. Weisskopf , CAS ) , 13; South Tiburon Ridge , 37 ° 53 9 05 0 N , 122 ° 27 9 06 0 W , Feb. 27, 1993 , serpentine grassland (D. Ubick , J. Boutin , C. Kellner , CDU ) , 2♀ , Apr. 18, 1993 , serpentine grassland (D. Ubick , CDU ) , 23, 1♀ ; Terra Linda , San Rafael , 38 ° 01.2 9 N, 122 ° 34.5 9 W, all border of suburb and open space, grassy hills, oaks, laurels, shrubs, elev. 100 m ( J. Schweikert , CAS ) : June 4, 2003 , 13, June 22, 2003 , 13, July 15, 2003 , 13, July 31, 2003 , 1♀ , Aug. 23, 2003 , 1♀ , Apr. 13, 2004 , 13, Apr. 25, 2004 , 13, May 2, 2004 , 13, July 18, 2004 , 13, May 29, 2005 , 13, May 13, 2006 , 13; Tiburon , Dec. 21, 1988 (L. Cheng , T . Briggs , CAS ) , 1♀ , mid-April 2002 (K. Passaretti , UCR ) , 23; Woodacre , Apr. 21, 1981 , in house ( P. Signet , UCB ) , 13. Mendocino Co. : Ukiah , June 5, 2000 , in house ( E. Nicolait , CAS ) , 13. Sonoma Co. : Petaluma , May 16, 2003 , in bathroom ( H. Stavropoulos , UCR ) , 13. DISTRIBUTION: Coastal California , from the San Francisco Bay area north (map 3) .