Aymaria calilegua, 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 : 158-162

Aymaria calilegua , new species Figures 593 600

TYPE: Male holotype from Calilegua Nat. Park , Prov. Jujuy, Argentina ; 600 m elev.,

Mirador, forest, malaise, Dec. 18 28, 1987 (S. & J. Peck), in AMNH.

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

DIAGNOSIS: Distinguished from congeners by the serrated tip of the procursus (fig. 598); from A. pakitza also by the shape of the epigynum (compare figs. 599 and 604), and by the larger male cheliceral apophyses (compare figs. 595 and 601).

MALE (holotype): Total length 3.1, carapace width 1.5; leg 1: 34.7 (9.2+0.5+8.8 +14.3+1.9), tibia 2: 5.3, tibia 3: 3.9, tibia 4: 5.5; tibia 1 l/d: 69. Habitus and prosoma shape as in figs. 593 595, carapace with pit, light brown with dark brown mark behind ocular area; distance PME-ALE about 120% of PME diameter. Ocular area with dark brown median stripe and lateral margins, clypeus light brown, with pair of darker stripes (fig. 595), sternum orange-brown, dark brown margin and labium. Chelicerae brown with pair of dark brown apophyses overhanging fangs (fig. 595). Palp as in figs. 596 597, light brown; coxa with distinct retrolateral apophysis, femur with proximal protrusion and distal bulge, procursus with serrated tip (fig. 598), bulb with distal spinelike apophysis (figs. 596 597). Femora of legs dark brown, tibiae and metatarsi light brown, without rings; legs without spines, without curved and vertical hairs; retrolateral trichobothrium of tibia 1 at 5%; tarsus 1 with ~ 25 pseudosegments. Opisthosoma pale greenish-ochre, with faint darker spots posteriorly and dorsally.

VARIATION: Tibia 1 in other males: 9.2, 9.5, 10.9, 12.7; in the two males from Calilegua Nat. Park, El Cortaderal, the thoracic pit is more distinct than in the holotype. In some males the dark spots on the opisthosoma are quite distinct, and the legs have slightly darker rings (cf. female).

FEMALE: In general similar to male, but rings on legs more distinct. Epigynum as in fig. 599, light brown, relatively small. Internally with pore plates in tentlike position (fig. 600). Without stridulatory apparatus (cf. A. conica and relatives on Galápagos islands). Tibia 1 in three females: 8.5, 9.5, 9.6.

DISTRIBUTION: Widely distributed in northern Argentina, Bolivia, and possibly southern Peru (the single female from Peru is assigned tentatively) (map 4).

MATERIAL EXAMINED: ARGENTINA: Jujuy: Calilegua Nat. Park : type above ; Calilegua Nat. Park, 800 m elev., El Cortaderal, km 6, forest, malaise, Dec. 18 28, 1987 (S. & J. Peck), 23 in AMNH. BOLIVIA: La Paz: Yungas , Mapiri, N La Paz, Aug. 11 15, 1989 (L. E Pena), 1♀ in AMNH. Beni: 16.8 mi SW Yucumo (15°23'S, 66°59'W), ~ 500 m elev., Nov. 15 19, 1989 (J. Coddington, C. Griswold, D. Silva, S. Larcher, E. Penaranda), 33 1♀ (3 vials) in USNM ; Est. Biol. Beni (14°47'S, 66°15'W), ~ 225 m elev., Nov. 8 14, 1989 (J. Coddington, C. Griswold, D. Silva, S. Larcher, E. Penaranda), 23 1♀ (2 vials) in USNM. PERU: Madre de Dios: Parque Nacional Manú, Zona Reservada Pakitza, 356 m elev., (11°56'S, 71°17'W), Apr. 24 29, 1991 (D. Silva), 1♀ assigned tentatively, in USNM .

Aymaria pakitza , new species Figures 601 605

TYPES: Male holotype, 43 5♀ paratypes from Zona Reservada Pakitza (11°56'S, 71°17'W), Madre de Dios, Peru ; 356 m elev., July 4, 1991 (D. Silva), in MUSM .

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

DIAGNOSIS: Distinguished from all known congeners by the tiny male cheliceral apophyses (fig. 601), by the shape of the procursus tip (figs. 602 603), and the sclerotized arches at the book-lung covers (fig. 604).

MALE (holotype): Total length 4.7, carapace width 2.1; leg 1: 30.5 (7.5+0.8+7.7 +11.7+2.8), tibia 2: 5.1, tibia 3: 3.6, tibia 4: 5.1; tibia 1 l/d: 34. Habitus typical for the genus, except for the more rounded opisthosoma (resembling that of certain Priscula species , cf. fig. 501). Carapace orange brown with dark brown lateral margin and triangular median mark, with very narrow pit rather like widened thoracic groove than real pit as, e.g., in the Holocnemus group; ocular area dark brown, eye pattern as in congeners (cf. figs. 595, 607); distance PME-ALE about 100% of PME diameter. Clypeus dark brown; sternum dark brown, lateral margins light brown. Chelicerae dark brown with pair of unusually short apophyses in position typical for genus (fig. 601). Palp in general as in congeners, mostly dark brown, procursus as in figs. 602 603, bulb very similar to A. conica (cf. fig. 589), but terminal apophysis slightly longer. Legs brown, with dark brown rings on femora (two on distal half), tibiae (proximally, medially, distally; on tibia 1 only proximally); legs without spines; few vertical hairs on tibiae and metatarsi; curved hairs on femora, tibiae, and metatarsi; femur 3 slightly thicker than others; retrolateral trichobothrium of tibia 1 at 5%; tarsus 1 with ~ 25 distinct pseudosegments. Opisthosoma globular, greenish-gray with many distinct dark bluish spots, with large, dark brown epiandrous plate, brown border of book-lung cover (cf. female: fig. 604), and roughly rectangular brown plate in front of spinnerets.

VARIATION: Tibia 1 in two male paratypes: 8.0, 8.1. Femur 3 sometimes significantly thicker than others.

FEMALE: In general very similar to male; tibia 1 (N = 11) 6.8 7.6 (x¯ = 7.1); opisthosoma usually significantly higher than long. Without stridulatory organ between prosoma and opisthosoma. Epigynum with dark, blackish anterior plate (fig. 604), brown borders of lung plates more distinct than in male. Internal genitalia as in fig. 605.

DISTRIBUTION: Known from southern Peru (Cuzco and Madre de Dios) (map 4).

MATERIAL EXAMINED: PERU: Madre de Dios: types above ; same locality, July 3, 1991 (D. Silva), 23 in MUSM. Cuzco: Acjanaco-Tres Cruces (13°18'S, 71°40'W), Mar. 1991 and July 3, 1991 (4 vials, D. Silva), 4♀ 3 juveniles in MUSM ; Machu Picchu , ruins, bamboo/cloud forest, 2400 m elev., Oct. 16, 1987 (J. Coddington), 13 2♀ 4 juveniles (2 vials) in USNM ; Winahuaina (~ 13°07'S, 72°34'W), 2700 3100 m elev., Feb 8 10, 1990 (D. Silva), 13 1♀ in MUSM ; Parque Nacional Manú, Carretera Paucartambo Pilcopata, 2700 m elev., Feb. 18 19, 1990 (D. Silva) 2♀ in MUSM ; same locality, Feb. 19, 1990 (A. Cano & D. Silva) 1♀ 1 juvenile in MUSM .

Aymaria dasyops (Mello-Leitao, 1947) , new combination Figures 606 612

Psilochorus dasyops Mello-Leitao, 1947b: 163 164, fig. 10.

TYPE: Male lectotype (designated herein) and a prosoma (probably of an adult female) from Chaco , Yungas, Bolivia ; June 5, 1937 (H. E. Hinton), in BMNH (1940.12.30.50), examined .

DIAGNOSIS: Distinguished from congeners by the broadly ending, slightly bent procursus (figs. 611 612), and the rounded tip of the bulbal apophysis (fig. 610). From A. pakitza also by the longer male cheliceral apophyses (fig. 607).

MALE (lectotype): Total length 4.3, carapace width 1.8; leg 1: (14.7+0.7+13.9, metatarsus and tarsus missing), tibia 2 and 4 missing, tibia 3: 6.3; tibia 1 l/d: 83. Habitus and prosoma shape as in figs. 606 608, carapace ochre with brown radii and brown pit, ocular area dark brown, clypeus light brown, with many long hairs (fig. 606), sternum light ochre. Chelicerae light brown with pair of dark brown apophyses overhanging fangs (fig. 607). Palps as in figs. 609 610, very light brown; coxa with distinct retrolateral apophysis, femur with proximal protrusion and distal bulge, procursus ending broadly, ventrally with small subdistal semitransparent process (figs. 611 612). Femora of legs brown, more distal segments ochre; legs without spines, without curved and vertical hairs. Opisthosoma greenish-gray with many blackish spots, high posteriorly (fig. 606).

FEMALE: Unknown.

DISTRIBUTION: Known only from type locality (map 4).

MATERIAL EXAMINED: BOLIVIA: Chaco, Yungas: type above.

Figures

Figs. 593 598. Aymaria calilegua, n. gen., n. sp., male. 593. Habitus, lateral view. 594 595. Prosoma, ventral and frontal views. 596. Right palp, retrolateral view. 597. Right palp, prolateral view. 598. Right procursus, dorsal view. Scale lines: 1.0 mm (593 595), 0.5 mm (596 597).

Figs. 606 612. Aymaria dasyops (Mello-Leitao), male lectotype. 606. Habitus, lateral view. 607 608. Prosoma, frontal and dorsal views. 609. Right palp, retrolateral view. 610. Right palp, prolateral view. 611. Right procursus, prolateral view. 612. Right procursus, retrolateral view. Scale lines: 1.0 mm (606 608), 0.3 mm (609 612).