Niarchos ramirezi, Platnick & Duperre, 2010

Platnick, Norman I. & Dupérré, Nadine, 2010, The Andean Goblin Spiders Of The New Genera Niarchos And Scaphios (Araneae, Oonopidae), Bulletin of the American Museum of Natural History 2010 (345), pp. 1-120 : 47

Niarchos ramirezi , new species Figures 312–335

TYPE: Male holotype taken from litter along the Río Perdido trail at an elevation of 2085 m at the Yanayacu Biological Station, 0u 36.4969S, 77u 52.9479W, Napo, Ecuador (Nov. 26, 2009; Niarchos Exped. ), deposited in QCAZ (PBI_OON 410) .

ETYMOLOGY: The specific name is a patronym in honor of Martín Ramírez of the Museo Argentino de Ciencias Naturales, in recognition of his enormous contributions to the organization and success of the Niarchos Expedition.

DIAGNOSIS: Males resemble those of N. scutatus but have a thinner embolar base and a longer, free embolus (figs. 319–322), and differ from those of N. bonaldoi by having a larger protrusion near the embolar base (figs. 324, 325); females resemble those of N. scutatus and N. bonaldoi but have the sclerite connecting the apodemes narrower at the midline than in those species (figs. 334, 335).

MALE (PBI_OON 410, figs. 312–325): Total length 1.41. Posterior eye row straight from above; PLE-PME separated by less than PME radius. Sternum surface smooth. Endites with heavily sclerotized triangular projections directed obliquely. Leg spination: tibiae: III v0-0-1p; IV v0-0- 2. Embolus twisted at about half its length; distal part of bulb with triangular protrusion near embolar base (figs. 319– 322).

FEMALE (PBI_OON 410, figs. 326–335): Total length 1.68. Leg spination: tibiae: III v0-0-1p; IV v0-1p-2. Anterior receptaculum relatively short, wide, invaginated at middle; postepigastric scutum triangular (figs. 334, 335).

OTHER MATERIAL EXAMINED: Ecuador: Napo: Yanayacu Biological Station , stream trail, 0u 35.9559S, 77u 53.4319W, Nov. 24–Dec. 2, 2009, pitfall, elev. 2130 m (N. Platnick, N. Dupérre´, E. Tapia, Niarchos Exped., AMNH, MACN PBI _OON 408), 2 - (1 without abdomen) ; Yanayacu Biological Station, Río Perdido trail, 0u 36.4969S, 77u 52.9479W, Nov. 26, 2009, litter, elev. 2085 m ( Niarchos Exped., AMNH PBI _ OON 40821), 1 -, 1 U .

DISTRIBUTION: Known only from the Yanayacu Biological Station in Napo province, Ecuador.

Figures

Figs. 312–325. Niarchos ramirezi, new species, male. 312. Habitus, dorsal view. 313. Same, ventral view. 314. Same, lateral view. 315. Carapace, dorsal view. 316. Habitus, anterior view. 317. Carapace, lateral view. 318. Sternum and mouthparts, ventral view. 319. Embolus, posterior view. 320. Palp, prolateral view. 321. Same, ventral view. 322. Same, retrolateral view. 323. Embolus, prolateral view. 324. Tip of palp, prolateral view. 325. Same, enlarged.

Figs. 326–335. Niarchos ramirezi, new species, female. 326. Habitus, dorsal view. 327. Same, ventral view. 328. Carapace, dorsal view. 329. Sternum and mouthparts, ventral view. 330. Habitus, lateral view. 331. Same, anterior view. 332. Carapace, lateral view. 333. Epigastric region, ventral view. 334. Genitalia, ventral view. 335. Same, dorsal view.