Metagonia maldonado, 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 : 64-67

publication ID 10.1206/0003-0090(2000)254<0001:NWPSAP>2.0.CO;2

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scientific name

Metagonia maldonado

sp. nov.

Metagonia maldonado View in CoL , new species Figures 2 View Figs , 62 View Figs , 107 View Figs , 114 View Figs , 146 View Figs , 244 View Figs 248

TYPES: Male holotype, 93 9♀ paratypes from 15 km E Puerto Maldonado (12°33'S, 69°03'W), Madre de Dios, Peru GoogleMaps ; 200 m elev., June July 1989 and Feb. 25 Mar. 7, 1990 (D. Silva), in MUSM .

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

DIAGNOSIS: Representative of group 3 above. Easily distinguished from close relatives ( M. tingo , M. samiria ) by the tip of the procursus with its four pointed laminae and apophyses (figs. 244 245), by the shape and length of the femur apophysis (fig. 246), by the more widely separated clypeus apophyses (fig. 2), and by the shape of the epigynum (fig. 247).

MALE (holotype): Total length 3.2, carapace width 1.0; leg 1: 33.6 (8.3+0.4+8.1+15.2 +1.7), tibia 2: 4.8, tibia 3: 2.7, tibia 4: 4.5; tibia 1 l/d: 94. Habitus and prosoma shape as in M. tingo (cf. figs. 226 228), only posterior third of carapace brown, ocular area brown, distance PME-ALE about 20% of PME diameter. Clypeus brown, with pair of apophyses as in fig. 2 (see also fig. 107); sternum whitish. Chelicerae ochre-yellow, unmodified except pair of darker (sclerotized?) areas un- der clypeal apophyses. Palps ochre-yellow to light brown, procursus with dark distal parts; coxa without apophysis, femur with long prolateroventral apophysis and series of smaller apophyses on ventrodistal margin (fig. 246); procursus relatively simple (figs. 244 245), without hinged process; bulb simple, as typical for genus (fig. 245); tarsal organ capsulate (fig. 62). Legs ochre-yellow, with brown patellae and tibia-metatarsus joints; without spines, without curved and vertical hairs; retrolateral trichobothrium of tibia 1 at 6.9%; tarsus 1 with ~ 25 pseudosegments. Opisthosoma ochre-gray with some indistinct darker spots dorsally, shape as in M. tingo (cf. fig. 226). Male gonopore with four epiandrous spigots (fig. 114), ALS with several piriform gland spigots (fig. 146).

VARIATION: The males from Tambopata, Beni, and La Paz (see below) differ slightly with respect to the dorsal spine of the procursus tip (arrow in fig. 244), which is slight- ly narrower, and with respect to the series of ventrodistal apophyses on the femur (most conspicuously, there is an additional upwardpointing apophysis where the arrow points to in fig. 246).

FEMALE (paratypes): Tibia 1 (N = 8) 6.0 7.1 (x¯ = 6.5). In general very similar to male, but carapace and clypeus without distinct brown marks, only light brown spot posteriorly and light brown band between eye triads. Epigynum light brown with dis- tinct darker marks and lateral margins (fig. 247). Internally apparently symmetric, with two pairs of folds that seem to originate from uterus externus (fig. 248).

DISTRIBUTION: Known from southern Peru (Madre de Dios) and northern Bolivia (Beni, La Paz) (map 1).

MATERIAL EXAMINED: PERU: Madre de Dios: 15 km E Puerto Maldonado: types above. Zona Reservada Tambopata, Laguna Chica : noche (12°50'S, 69°17'W), 290 m elev., June 8, 1988 (D. Silva), 13 1♀ in MUSM GoogleMaps ; Zona Reservada Tambopata, June 3 15, 1988 (3 vials; J. Coddington), 13 2♀ in USNM ; same locality, Nov. 7 12, 1983, and Sept. 6 14, 1984 (3 vials; T. L. Erwin et al.), 13 2♀ in USNM ; Tambopata Reserve, Rio Tambopata, Explorer s Inn , Mar. 1988 (J. Palmar, D. Smith), 13 in MCZ ; Zona Reservada de Manú, Rio La Torre and Rio Tambopata (12°50'S, 69°17'W), Aug GoogleMaps .

Dec. 1979 (A. Rypstra), 6♀ in USNM. BO- LIVIA: Beni: 16.8 mi SW Yucumo (~ 15°23'S, 66°59'W), ~ 500 m elev., Nov. 15 19, 1989 (2 vials; J. Coddington, C. Griswold, D. Silva, S. Larcher, E. Penaranda), 53 7♀ in USNM GoogleMaps ; La Paz: Cerro Uchumachi , 7 km SW Coroico, (~ 16°15'S, 67°21'W), ~ 1900 m elev., Nov. 24 25, 1989 (J. Coddington, C. Griswold, D. Silva, S. Larcher, E. Penaranda), 33 12♀ in USNM GoogleMaps .


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