Metagonia samiria, 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

Metagonia samiria , new species Figures 238 243

TYPES: Male holotype, 23 3♀ paratypes from Alto Rio Samiria (5°07'S, 75°28'W), Dept. Loreto, Peru ; May 1990 (T. Erwin et al.), in MUSM .

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

DIAGNOSIS: Representative of group 3 above. Close relative of M. tingo , easily distinguished by the shape of the procursus (compare figs. 238 240 with figs. 230 231). Also, the clypeus apophyses are relatively smaller in the present species, and the palpal femur apophyses are longer (compare figs. 241, 229).

MALE (holotype): Total length 3.2, carapace width 0.9; leg 1: 36.0 (8.8+0.4+8.7+16.5 +1.6), tibia 2: 4.9, tibia 3: 2.8, tibia 4: 4.7; tibia 1 l/d: 96. Habitus and prosoma shape as in M. tingo (cf. figs. 226 228), only with posterior brown mark, ocular area light ochre-yellow, distance PME-ALE about 20% of PME diameter. Clypeus brown, with pair of apophyses as in M. tingo (cf. fig. 227); sternum light ochre-yellow. Chelicerae ochre-yellow, unmodified except pair of black marks proximolaterally. Palps ochre-yellow to light brown, procursus reddish-brown with dark distal parts; coxa without retrolateral apophysis, femur without proximal retrolateral apophysis, but with strong prolateroventral apophysis (fig. 241), at rest lodged into cavity of procursus; procursus complex (figs. 238 240), apparently without hinged process; bulb simple, as in M. tingo (cf. fig. 230). Legs yellowish, with brown patellae and tibia-meta- tarsus joints. Retrolateral trichobothrium of tibia 1 at 7.5%; tarsus 1 with over 20 pseudosegments. Opisthosoma (shape, color, markings) as in M. tingo (cf. fig. 226).

FEMALE (paratypes): Tibia 1: 6.6, 6.7, 7.2. In general very similar to male, but carapace and clypeus without brown marks, opisthosoma with long tip overhanging spinnerets. Epigynum light brown, with slightly projecting broad scape with distal pocket (fig. 242). Internally apparently fully symmetrical (fig. 243).

DISTRIBUTION: Known only from type locality (map 1).

MATERIAL EXAMINED: PERU: Loreto: Alto Rio Samiria: types above.

Figures

Figs. 238 243. Metagonia samiria, n. sp. 238 240. Left procursus, ventral (238), dorsal (239), and prolateral (240) views. 241. Male left palpal femur, prolateral view. 242. Epigynum, ventral view. 243. Epigynum, dorsal view. Scale lines: 0.3 mm.