Noideattella omby, Alvarez-Padilla & Ubick & Griswold, 2015

Alvarez-Padilla, Fernando, Ubick, Darrell & Griswold, Charles E., 2015, Indian Ocean goblin spiders (Araneae, Oonopidae): four new species of pelicinoids from Madagascar, with a redescription of the type species Silhouettella curieusei Benoit, 1979, American Museum Novitates 2015 (3835), pp. 1-32 : 15

Noideattella omby , new species

Figures 25–32 , 46 , 82–98 , 102

TYPE: Male holotype, female allotype and one male paratype from Berlese and sifted leaf litter of a littoral forest at an elevation of 25 m, Forêt d’Ampombofofo , 21°5′58″S, 49°20′19″E, Antsiranana Province, Madagascar (21–22 November 2007, B.L. Fisher et al.), deposited in CASC ( PBI_OON 36120 ) .

ETYMOLOGY: The species epithet, a noun in apposition, is taken from the Malagasy word for cow, omby .

DIAGNOSIS: N. omby can be differentiated from other Noideattella species by the reduced size of the eyes covering less than half of the cephalic area; except from N. tany and N. sylvnata that have similar eye size and arrangement ( Álvarez-Padilla et al., 2012: figs. 1, 201); but differ from these two species by the presence of a cuticular rectangular apophysis on the embolar lamella (figs. 46, 95–98) and the smooth carapace dorsal surface (figs. 25, 27, 82).

DESCRIPTION: Male ( PBI _ OON 3564 ) . Total length 1.2. Body color pale orange (figs. 25–27). Cephalothorax : Carapace pale orange, ovoid in dorsal view, pars cephalica flat in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, posterolateral edge without pits, surface of elevated portion of pars cephalica smooth, sides finely reticulate; lateral margin without denticles (figs. 25, 27, 82, 83). Sternum surface and furrows cuticle smooth (figs. 26, 88). Clypeus straight in front view. Ocular area equal than the clypeus height (fig. 29). Eyes well developed, ALE largest; posterior eye row straight from front; ALE-PLE separated by less than ALE radius, PLE-PME separated by less than PME radius (figs. 29, 94). Sternum longer than wide, pale orange (fig. 26), without pits, microsculpture absent, anterior margin 2001 to Apr. 14, 2001, Fisher et al., 1♀ ( CASC PBI _ OON 3878 ) . Toliara: Forêt d’Petriky , 12.5 km W Tolagnaro, littoral rainforest, 10 m, -25.06216°, 46.86933°, Nov. 22, 1998, Sylvian, B.L. Fisher, 2♀ ( FMNH PBI _ OON 36302) .

Figures

FIGURES 25–32. Noideattella omby new species. 25. Habitus male, dorsal view. 26. Same, ventral view. 27. Same, lateral view. 28. Palp male, prolateral view. 29. Cephalothorax male, anterior view. 30. Palp male, retrolateral view. 31. Genitalia female, ventral view. 32. Genitalia female, dorsal view. Scale bars = 0.2 mm, except genitalia: 0.1 mm.

FIGURES 41–47. Silhouettella perismontes new species (figs. 41–42), Noideattella sylvnata, new species (figs. 43–45). Noideattella omby new species (fig. 46). Silhouettella perisalma new species (fig. 47). 41. Habitus female, ventral view. 42. Leg 1 male, prolateral view. 43. Leg 1 male, prolateral view. 44. Habitus female, ventral view. 45. Palp male, dorsal view. 46. Palp male, dorsal view. 47. Palp male, prolateral view, arrow indicating triangular prolateral notch. Scale bars = 0.2 mm, except genitalia: 0.1 mm.

FIGURES 82–89. Noideattella omby new species. 82. Cephalothorax male, dorsal view. 83. Same, lateral view. 84. Endites female, ventral view. 85. Endites male, ventral view. 86. Epigastric region female, ventral view. 87. Epigastric region male, ventral view. 88. Cephalothorax male, ventral view. 89. Tarsal organ I female, dorsal. Scale bars = 100 µm, except endites = 50 µm and female tarsal organ = 10 µm.

FIGURES 90–98. Noideattella omby new species. 90. Genitalia female, dorsal view. 91. Receptaculum accessory gland ducts, dorsal view. 92. Metatarsus and tarsus I female, retrolateral view. 93. Tibia 1 female, retrolateral view. 94. Chelicerae male, anterior view. 95. Embolus, dorsal view. 96. Embolus, retrolateral view. 97. Embolus, prolateral view. 98. Embolus, ventral view. Scale bars = 50 µm, except emboli and Receptaculum accessory gland ducts = 10 µm.

FIGURES 99–102. Distribution maps. 99. Silhouettella curieusei Benoit, 1979, triangle; Silhouettella perismontes, new species, circle. 100. Silhouettella perisalma, new species, circles. 101. Noideattella sylvnata, new species, circles. 102. Noideattella omby, new species, circles.