Paradysderina watrousi, 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 : 9-20

Paradysderina watrousi , new species Figures 1–84

TYPES: Male holotype and female allotype taken from vine litter at Pillahuata, Manu Road, km 128, Cusco, Peru (Sept. 24, 1982; L. Watrous, G. Mazurek), deposited in FMNH (33584, PBI_OON 10091) .

ETYMOLOGY: The specific name is a patronym in honor of one of the collectors of the types, Larry Watrous.

DIAGNOSIS: Males can be recognized by the sickle-shaped embolus, with a narrow dorsal and much wider ventral flange (figs. 9–12, 76–78), females by the rectangular genital atrium, with the anterior genitalic process extending far anterior of the anterior atrial ridge (figs. 82–84).

MALE (PBI_OON 10091, figs. 1–36, 73– 78): Total length 1.78. Elevated portion of pars cephalica granulate. Chilum tiny, triangular. Inner margin of paturon slightly excavated. Endites anteriorly with two short, curved, clawlike processes. Leg spination: femora I p0-0-2; tibiae: I v4-4-1p, II v4-4-0; metatarsi: I v2-2-1p, II v2-2-0. Palps symmetrical; embolus originating on strong lobe of cymbium, consisting of narrow basal stalk followed by bifid dorsal and ventral flanges forming sickle-shaped pair.

FEMALE (PBI_OON 10091, figs. 37– 72, 79–84): Total length 2.08. Postepigastric scutum only around epigastric furrow, not fused to epigastric scutum. Leg spination: femora: I p0-0-2, II p0-0-1; tibiae: I v4-4-2, II v3-4-1; metatarsi: I v2-2-2, II v2-2- 1p. Genital atrium rectangular; anterior genitalic process extending as far anterior of anterior atrial ridge as posterior of it; anterior genitalic process with W-shaped base.

OTHER MATERIAL EXAMINED: Peru: Cusco: Consuelo, Manu Road , km 165, Oct. 4, 1982, leaf litter (L. Watrous, G. Mazurek, FMNH 33576 , PBI_OON 10083), 1♀ ; Pillahuata, Manu Road , km 128, Sept. 16, 1982, litter under ferns (L. Watrous, G. Mazurek, FMNH 33577 , PBI_OON 10084), 1♀, Sept. 17, 1982, wood chips (L. Watrous, G. Mazurek, FMNH 33536 , PBI_OON 10043), 1♀, Sept. 19, 2982, leaf litter after rain (L. Watrous, G. Mazurek, FMNH 33575 , PBI_OON 10082), 1♀, Sept. 20, 1982, litter in mossy forest (L. Watrous, G. Mazurek, FMNH 33547 , PBI_OON 10054), 18, 1♀, Sept. 21, 1982, litter after rain (L. Watrous, G. Mazurek, FMNH PBI_OON 523), 18, Sept. 25, 1982, vine litter (L. Watrous, G. Mazurek, FMNH 33557 , PBI_OON 10064), 1♀, Sept. 26, 1982, litter along stream (L. Watrous, G. Mazurek, FMNH PBI_OON 38399), 38, same, litter along gravel streambed (L. Watrous, G. Mazurek, FMNH 33537 , PBI_OON 10044), 18, same, moss and litter on xeric slope (L. Watrous, G. Mazurek, FMNH 33585 , PBI_OON 10092), 18, 4♀, same, rotten logs (L. Watrous, G. Mazurek, FMNH 33539 , PBI_OON 10046), 1♀, same, damp leaf litter (L. Watrous, G. Mazurek, FMNH 33591 , PBI_OON 10098), 1♀, Sept. 27, 1982, vine litter (L. Watrous, G. Mazurek, FMNH 33545 , PBI_OON 10052), 38, 1♀, same, litter in runoff in mossy forest (L. Watrous, G. Mazurek, FMNH 33595 , PBI_OON 10102), 18, 2♀ .

DISTRIBUTION: Peru (Cusco).

Figures

Figs. 1–8. Paradysderina watrousi, new species, male. 1. Carapace, dorsal view. 2. Same, lateral view. 3. Same, anterior view. 4. Chelicerae, anterior view. 5. Same, posterior view. 6. Mouthparts, ventral view. 7. Labrum and endites, dorsal view. 8. Labrum, dorsal view.

Figs. 9–16. Paradysderina watrousi, new species, male. 9. Left palp, prolateral view. 10. Same, retrolateral view. 11. Left embolus, prolateral view. 12. Same, retrolateral view. 13. Palpal tibia, dorsal view. 14. Tarsal organ, palp, dorsal view. 15. Sternum and mouthparts, ventral view. 16. Anterior portion of abdomen, ventral view.

Figs 17–24. Paradysderina watrousi, new species, male. 17. Claws of leg I, lateral view. 18. Same, leg II. 19. Same, leg III. 20. Same, leg IV. 21. Claws of leg I, apical view. 22. Same, leg II. 23. Same, leg III. 24. Same, leg IV.

Figs. 25–32. Paradysderina watrousi, new species, male. 25. Tarsal organ from leg I, dorsal view. 26. Same, leg II. 27. Same, leg III. 28. Same, leg IV. 29. Leg I, lateral view. 30. Same, leg II. 31. Same, leg III. 32. Same, leg IV.

Figs. 33–40. Paradysderina watrousi, new species, male (33–36) and female (37–40). 33, 37. Spinnerets, apical view. 34, 38. Anterior lateral spinneret, apical view. 35, 39. Posterior median spinneret, apical view. 36, 40. Posterior lateral spinneret, apical view.

Figs. 41–48. Paradysderina watrousi, new species, female. 41. Carapace, dorsal view. 42. Same, lateral view. 43. Same, anterior view. 44. Chelicerae, anterior view. 45. Same, posterior view. 46. Mouthparts, ventral view. 47. Labrum and endites, dorsal view. 48. Serrula, dorsal view.

Figs. 49–56. Paradysderina watrousi, new species, female. 49. Claws of leg I, lateral view. 50. Same, leg II. 51. Same, leg III. 52. Same, leg IV. 53. Claws of leg I, apical view. 54. Same, leg II. 55. Same, leg III. 56. Same, leg IV.

Figs. 57–64. Paradysderina watrousi, new species, female. 57. Sternum and mouthparts, ventral view. 58. Trichobothrial base from metatarsus III, dorsal view. 59. Palp, prolateral view. 60. Same, retrolateral view. 61. Palpal tibia, dorsal view. 62. Tarsal organ, palp, dorsal view. 63. Anterior portion of abdomen, ventral view. 64. Genitalia, ventral view.

Figs. 65–72. Paradysderina watrousi, new species, female. 65. Leg I, lateral view. 66. Same, leg II. 67. Tarsal organ from leg I, dorsal view. 68. Same, leg II. 69. Same, leg III. 70. Same, leg IV. 71. Spiracles and genitalia, dorsal view. 72. Genitalia, dorsal view.

Figs. 73–84. Paradysderina watrousi, new species, male (73–78) and female (79–84). 73, Carapace, dorsal view. 74, 79. Same, anterior view. 75. Sternum and mouthparts, ventral view. 76. Left palp, prolateral view. 77. Same, ventral view. 78. Same, retrolateral view. 80. Abdomen, lateral view. 81. Same, ventral view. 82, 83. Epigastric region, ventral view. 84. Same, dorsal view.