Semidysderina donachui, Platnick & Dupérré, 2011

Platnick, Norman I. & Dupérré, Nadine, 2011, The Andean Goblin Spiders Of The New Genera Paradysderina And Semidysderina (Araneae, Oonopidae), Bulletin of the American Museum of Natural History 2011 (364), pp. 1-121 : 113-116

Semidysderina donachui , new species Figures 840–852

TYPE: Male holotype taken under a rock at an elevation of 14,200 ft at Río Donachui , Sierra Nevada de Santa Marta, Cesar, Colombia Jan. 6, 1973 ; J. Kochalka), deposited in AMNH (PBI_OON 37102) .

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

DIAGNOSIS: The genitalia closely resemble those of S. kochalkai ; males have a relatively short, wide embolus with the ventrally directed hook on its prolateral edge (figs. 843–846) less abruptly narrowed; females have an arched anterior margin on the genitalic atrium (figs. 850–852) and a similarly arched posterior margin. Both sexes have a reticulate, rather than smooth, sternal surface (see above).

MALE (PBI_OON 37102, figs. 840–846): Total length 2.10. Elevated portion of pars cephalica granulate. Chilum small, triangular. Sternum surface finely reticulate. Anteri- or ledge of paturon with small tubercle on inner margin. Endites with wide ventral process flattened distally, tip directed laterally. Leg spination: femora: I p0-0-2, r0-1-1, II p0-0-2; tibiae: I v4-4-2, II v4-4-1p; metatarsi I, II v2-2- 1p. Embolus relatively short, wide, with ventrally directed hook on prolateral edge.

FEMALE (PBI_OON 678, figs. 847–852): Total length 2.49. Postepigastric scutum only around epigastric furrow. Leg spination: femora I, II p0-0-2, r0-1-1; tibiae I, II v4-4- 2; metatarsi: I v2-2-2, II v2-2- 1p. Atrium ovoid; anterior genitalic process small, needlelike, base poorly sclerorized; apodemes distally convergent.

OTHER MATERIAL EXAMINED: Colombia: Cesar: Río Donachui, Sierra Nevada de Santa Marta, Jan. 19, 1974, elev. 10,000 ft (J. Kochalka, AMNH PBI_OON 37101), 1♀. Magdalena: La Estación , Parque Nacional Natural Sierra Nevada de Santa Marta , 10 ° 489N, 73 ° 399W, July 15–17, 2000, Winkler, elev. 2200 m (J. Cantillo, IAVH 108114 , PBI_OON 640), 1♀ ; San Lorenzo, Parque Nacional Natural Sierra Nevada de Santa Marta , 10 ° 489N, 73 ° 399W, July 15–17, 2000, Winkler, elev. 2200 m (J. Cantillo, IAVH 108122 , PBI_OON 639), 18 ; San Lorenzo, northern Sierra Nevada de Santa Marta , June 9, 1985, litter, elev. 2000 m (H.-G. Müller, MHNG PBI_OON 881), 28 ; Aug. 24, 1985, litter and moss, elev. 2200 m (H.-G. Müller, MHNG PBI_OON 15800), 18 ; near San Lorenzo, northern Sierra Nevada de Santa Marta , Aug. 18–24, 1985, thorn forest with moist litter, elev. 2200 m (H.-G. Müller, MHNG PBI_OON 15467, 15800), 18, 3♀ ; between San Pedro and San Javier, Sierra Nevada de Santa Marta , Mar. 29, 1975, elev. 5,130 ft (J. Kochalka, AMNH PBI_OON 37098), 1♀ ; Sierra Nevada de Santa Marta , June 4, 2001, pitfall, elev. 2480 m (P. Sanchez, ICN 4106 , PBI_OON 678), 28, 2♀ .

DISTRIBUTION: Known only from the Sierra Nevada de Santa Marta in northern Colombia.

Figures

Figs. 840–852. Semidysderina donachui, new species, male (840–846) and female (847–852). 840. Carapace, dorsal view. 841, 847. Same, anterior view. 842. Sternum and mouthparts, ventral view. 843. Left embolus, prolateral view. 844. Left palp, prolateral view. 845. Same, ventral view. 846. Same, retrolateral view. 848. Abdomen, lateral view. 849. Same, ventral view. 850, 851. Epigastric region, ventral view. 852. Same, dorsal view.