Guaranita goloboffi, HUBER, 2000

HUBER, BERNHARD A., 2000, New World Pholcid Spiders (Araneae: Pholcidae): A Revision At Generic Level, Bulletin of the American Museum of Natural History 2000 (254), pp. 1-348 : 97-100

Guaranita goloboffi , new species Figures 367 377

TYPES: Male holotype, 2♀ paratypes from Rio India Muerta, Camino a Ticucho , Tucumán, Argentina ; Jan. 21, 1995 (P. Goloboff), in MACN .

ETYMOLOGY: Named for the collector.

DIAGNOSIS: Distinguished from G. yaculica , n. sp., and G. munda (Gertsch) by the smaller dorsal flap on the procursus (compare figs. 374, 378, 380).

MALE (holotype): Total length 0.92, carapace width 0.42; leg 1: 1.98 (0.53+0.16 +0.49+0.47+0.33), tibia 2: 0.40, tibia 3: 0.35, tibia 4: 0.61; tibia 1 l/d: 9. Habitus as in fig. 367; entire prosoma pale ochre-yellow; carapace without thoracic groove (fig. 369); distance PME-ALE about 30% of PME diameter; sternum with pair of small frontal humps (figs. 369, 373); chelicerae with pair of long, distally hooked, frontal apophyses, and few stridulatory ridges laterally (fig. 372, stridulatory pick is a modified hair proximally on palpal femur: arrow in fig. 371); palp as in figs. 370 371, coxa without retrolateral apophysis, femur almost cylindrical, widened distally, tibia globular, procursus distally curved, with dorsal flap (figs. 370, 374), bulb as in figs. 371, 375. Legs without spines, without curved and vertical hairs; retrolateral trichobothrium of tibia 1 at 57%; tarsus 1 with ~ 5 pseudosegments. Opisthosoma greenish-gray, dorsally covered with large dark spots; ventrally pale, with slightly darker, short but wide genital plate.

VARIATION: Tibia 1 in male from El Hongo: 0.51.

FEMALE (paratypes and females from El Hongo): Total length (N = 6) 1.03 1.33, tibia 1 (N = 7) 0.52 0.56. In general very similar to male, but sternum without humps. Epigynum very light brown, simple flat plate (fig. 377); dorsal view as in fig. 376. I could not find pore plates.

DISTRIBUTION: Known from two localities in Tucumán and Salta, Argentina.

MATERIAL EXAMINED: ARGENTINA: Tucumán: Rio India Muerta : types above ; Salta: El Hongo, 6 km S Alemania , Apr. 19, 1995 (P. Goloboff), 13 5♀ in MACN .

Guaranita yaculica , new species Figure 378

TYPE: Male holotype from Aguas Blancas- Yaculica (22°43'S, 64°24'W), Salta, Argentina ; 520 m elev., Yungas forest (young 2° forest), leaf litter, Winkler sample, Oct. 25, 1994 (J. M. Carpenter & D. Agosti), in AMNH .

ETYMOLOGY: Named for the type locality. The specific name is a noun in apposition.

DIAGNOSIS: Distinguished from G. goloboffi , n. sp., and G munda (Gertsch) by the large roundish dorsal flap on the procursus (arrow in fig. 378).

MALE (holotype): Total length 1.00, carapace width 0.43; leg 1: 2.16 (0.62+0.15 +0.59+0.56+0.24), tibia 2: 0.48, tibia 3: 0.44, tibia 4 missing; tibia 1 l/d: 11. Habitus and details of prosoma as in G. goloboffi (cf. figs. 367 369); distance PME-ALE about 30% of PME diameter. Entire prosoma orange-ochre; opisthosoma greenish-gray with large blackish spots dorsally; sternum with pair of small frontal humps as in G. goloboffi (cf. fig. 373); chelicerae as in G. goloboffi (cf. fig. 372); palp in general as in G. goloboffi , only procursus significantly different, with larger dorsal flap and slightly different distal sclerites (fig. 378). Legs without spines, without curved and vertical hairs; tarsus 1 with ~ 5 pseudosegments.

FEMALE: Unknown.

DISTRIBUTION: Known only from type locality.

MATERIAL EXAMINED: ARGENTINA: Salta: Aguas Blancas-Yaculica: type above.

Guaranita munda (Gertsch, 1982) , new combination Figures 379 380

Pholcophora munda Gertsch, 1982: 104 , figs. 31 33, 42 44.

TYPE: Male holotype, 1♀ paratype from Cerro Colorado, Dept. Catamarca, Argentina (not Nuevo León, Mexico; see Note below) ; from leaf litter (hojarasca), Oct. 14, 1961 (O. de Ferrariis), in AMNH (examined) .

NOTE: The label reads Crro Colorado, Cta., 14. X - 61, Col: O. de Ferrariis. There is no reasonable doubt that this is not the Cerro Colorado in Nuevo León ( Mexico), but in Catamarca ( Argentina): first, Cta.

obviously stands for Catamarca; second, conspecific material and two very close relatives are now known from Argentina and southern Brazil ( G. goloboffi , n. sp.; G. yaculica , n. sp.); third, the only other material collected by O. de Ferrariis I have seen was also from Argentina (the type of Gertschiola neuquena ).

DIAGNOSIS: Distinguished from G. goloboffi and G. yaculica by the large T-shaped dorsal flap on the procursus (arrow in fig. 380), and the slightly different embolar division (compare figs. 375, 379).

MALE (holotype): Total length 1.16, carapace width 0.45; leg 1: 2.15 (0.61+0.16 +0.58+0.48+0.32), tibia 2: 0.47, tibia 3 missing, tibia 4: 0.65; tibia 1 l/d: 10. Habitus and details of prosoma as in G. goloboffi (cf. figs. 367 369); distance PME-ALE about 30% of PME diameter. Entire prosoma ochre-yellow; opisthosoma monochromous gray; sternum with pair of small frontal humps as in G. goloboffi (cf. fig. 373); chelicerae as in G. goloboffi (cf. fig. 372); palp in general as in G. goloboffi , only procursus significantly different, with large, T-shaped dorsal flap and slightly different distal sclerites (fig. 380), and bulb with longer embolar division and less tapering distal apophysis (fig. 379). Legs without rings; probably without spines, without curved and vertical hairs (most hairs missing); retrolateral trichobothrium of tibia 1 at 62%; tarsus 1 with 5 6 pseudosegments.

FEMALE (paratype): Total length 1.42, carapace width 0.49. In general very similar to male; all legs missing. Epigynum apparently

not distinguishable from G. goloboffi (cf. figs. 376 377).

DISTRIBUTION: Known from northern Argentina and southern Brazil.

MATERIAL EXAMINED: ARGENTINA: Catamarca: Cerro Colorado: types above. BRAZIL: Rio Grande do Sul: Quarái: Estancia Sao Roberto, May 24 28, 1991 (A. D. Brescovit), 13 2♀ in MCN (21206, 21111).

Figures

Figs. 367 372. Guaranita goloboffi, n. gen., n. sp., male. 367. Habitus, lateral view. 368 369. Prosoma, dorsal and dorsofrontal views. 370. Right palp, retrolateral view. 371. Right palp, prolateral view (arrow points to stridulatory pick). 372. Chelicerae, lateral view. Scale lines: 0.5 mm (367), 0.3 mm (368 369), 0.1 mm (370 372).