Titiotus madera, Platnick & Ubick, 2008

Platnick, Norman I. & Ubick, Darrell, 2008, A Revision of the Endemic Californian Spider Genus Titiotus Simon (Araneae, Tengellidae), American Museum Novitates 3608 (1), pp. 1-36 : 19-20

Titiotus madera , new species

Figures 42–46 ; map 2

TYPES: Male holotype and female allotype from Bass Lake , Madera Co. , California (July 9, 1958; W. Gertsch, V. Roth) , deposited in AMNH.

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Males resemble those of T. gertschi , but can easily be distinguished by the presence of multiple projections on the middle prong of the tibial apophysis (fig. 44); females also resemble those of T. gertschi but have a much narrower epigynal septum (fig. 45).

MALE: Total length 11. Coloration as in T. californicus . Leg spination: femora: I r1-2-1; II r1-1-2; III r1-1-2; tibiae: I d1-0-1, r1-1-1; II d1- 0-1, r1-1-0; III r0-1-1; metatarsi: p1-0-0, r1-0- 0; III p1-2-2. Embolus expanded prolaterally just beyond base, with short tip; median apophysis with small subdistal projection; middle prong of tibial apophysis bifid, bearing multiple projections, dorsal prong long, ventrally excavated (figs. 42–44).

FEMALE: Total length 14. Coloration as in T. californicus . Leg spination: femora: II p1-2- 1, r1-1-2; III r2-1-1; tibiae: I, II p0-1-0, r1-1-0; metatarsi: II p0-0-0, v0-0-0; III p1-2-2. Epigynal septum wide, occupying about twothirds of epigynal width, with gradually narrowing posteromedian ledge; posterior ducts oblique (figs. 45, 46).

OTHER MATERIAL EXAMINED: United States: CALIFORNIA: Madera Co. : Bass Lake , July 9, 1958 (W. Gertsch, V. Roth, AMNH), 13, 2♀; 5 mi S Fish Camp, just over county line, Sept. 23, 1961 (W. Gertsch, W. Ivie, AMNH) , 13. Mariposa Co.: El Portal, Apr. 8, 1960 (W. Gertsch, W. Ivie, R. Schrammel, AMNH), 1♀; El Portal, outside entrance to Yosemite National Park , July 14, 1952 (W. Gertsch, AMNH) , 23, 11♀; 14 mi N Oakhurst , Aug. 7, 1953, elev. 5100 ft (W., J. Gertsch, AMNH) , 13, 6♀; Sprinkle Cave , Apr. 7, 1979 (D. Rudolph, B. Martin, S. Winterath, AMNH) , 1♀; Wawona Camp , 37 ° 32 9 N, 119 ° 10 9 W, Sept. 17, 1941 (W. Ivie, AMNH) , 2♀; Yosemite National Park , July 1935 ( AMNH) , 1♀; Yosemite National Park, bridge below Nevada Falls , June 26, 1973 (P. Arnaud, Jr., CAS) , 13.

DISTRIBUTION: Known only from the Sierras of Madera and Mariposa Counties (map 2).

Figures

Figs. 42–46. Titiotus madera, new species. 42. Left male palp, prolateral view. 43. Same, ventral view. 44. Same, retrolateral view. 45. Epigynum, ventral view. 46. Same, dorsal view.