Neotrops silvae, Grismado & Ramírez, 2013

Grismado, Cristian J. & Ramírez, Martín J., 2013, The New World Goblin Spiders Of The New Genus Neotrops (Araneae: Oonopidae), Part 1, Bulletin of the American Museum of Natural History 2013 (383), pp. 1-150 : 106-107

Neotrops silvae , new species

Figures 83– 85 , 86E–F ; map 8

TYPES: Male holotype from Peru: Loreto: Río Samiria , - 5.11666 °, - 75.46666 °, May 01, 1990, to June 01, 1990, T. Erwin, D. Silva ( MUSM PBI_OON 43316 ) ; 3♀ and 3♂ paratypes ( MUSM PBI _ OON 43316) with same data. Deposited in MUSM.

ETYMOLOGY: The specific epithet is a patronymic of Diana Silva, one of the collectors of the type specimens.

DIAGNOSIS: N. silvae males differ from the other two species of the platnicki group in having a more elongated bulb, and also by the different shape of the conductor (figs. 84B–D, 86F); females by the relatively small anterior receptacle, with a transverse ovoid distal part (fig. 86E).

DESCRIPTION: Male (PBI_OON 43316). Total length 1.66. Cephalothorax: Carapace pale orange, ovoid in dorsal view, pars cephalica slightly elevated in lateral view, anteriorly narrowed to between 0.5 and 0.75 times its maximum width; lateral margin straight; nonmarginal pars cephalica setae dark, needlelike, scattered; nonmarginal pars thoracica setae dark, needlelike; marginal setae absent. Clypeus setae absent. Eyes all subequal, ALE circular, PME oval, PLE oval; posterior eye row procurved from front; ALE separated by more than their diameter, ALE-PLE separated by less than ALE radius, PME touching throughout most of their length, PLE-PME separated by less than PME radius. Sternum as long as wide, pale orange, anterior margin unmodified, posterior margin not extending posteriorly of coxae IV; setae sparse, evenly scattered (fig. 83E). Mouthparts: chelicerae, endites, and labium pale orange; cheliceral setae light, evenly scattered. Labium anterior margin indented at middle; with six or more setae on anterior margin. Endites distally not excavated, anteromedian tip with backward folded ridge and laterally directed pointed projections (fig. 83E). Abdomen: Dorsum white. Book lung covers elliptical. Postepigastric scutum pale orange. Spinneret scutum absent. Dorsum setae dark, needlelike. Colulus represented only by setae. Legs: Pale orange; femur IV thickened, much larger than femora I–III. Leg spination: leg I: femora d1, tibiae v2-2-2-2-2-0, metatarsi v2- 2-2-2-0; leg II: tibiae v2-2-2-2-2-0, metatarsi v2-2-2-2-0; leg III: femora d1-1, tibiae p1-1, r1-1, metatarsi d1subap, p1-1, r1-1; leg IV: femora d1-1-1, tibiae d1, p1-1, r1-1, v1-1ap, metatarsi d1subap, p1-1, r1-1, v1-2ap. Trichobothria not examined. Genitalia: Palp proximal segments pale orange; femur normal size, two or more times as long as trochanter; cymbium pale orange, ovoid in dorsal view, partially fused to the bulb; bulb pale orange, more than two times as long as cymbium, slender, elongated. Embolus dark, long, strongly curved; conductor complex, with two prolongations, one medial, translucent, distally expanded, and other more sclerotized, thin and curved at its base (figs. 84B–D, 86F).

FEMALE (PBI_OON 43316). Total length 1.98. As in male except as noted. Cephalothorax: Sternum precoxal triangles present; setae dark. Labium elongated hexagon. Palp spines absent. Abdomen: Postepigastric area setae dark, needlelike. Legs: Patella plus tibia I nearly as long as carapace. Leg spination: leg I: femora d1-1, tibiae v2-2-2-2-2-0, metatarsi v2-2-2-0; leg II: femora d1-1, tibiae v2-2-2-2-2-0, metatarsi v2-2-2-0; leg III: femora d1-1-1, tibiae p1-1, r1-1, v1-1ap, metatarsi p1-1, r1-1, v1-2ap; leg IV: femora d1-1-1, tibiae d1, p1-1, r1-1, v1-1ap; metatarsi p1-1, r1-1, v1-2ap. Genitalia: Anterior receptacle relatively short (half of posterodorsal plate length), with stalk gradually widened distally and with transverse ovoid apex, with small vesicle-shaped element at base (figs. 85H, 86E).

OTHER MATERIAL EXAMINED: PERU: Loreto: Pithecia , - 5.18333 °, - 72.70000 °, May 23, 1990, to May 31, 1990, T. Erwin, D. Silva, 1♀ ( MUSM PBI _ OON 43058) ; May 01, 1990, to June 01, 1990, T. Erwin, D. Silva, 1♀, 1♂ ( MUSM PBI _ OON 43153) ; Río Samiria , - 5.11666 °, - 75.46666 °, May 01, 1990, to June 01, 1990, T. Erwin, D. Silva, 3♀ ( MUSM PBI _ OON 43157) .

DISTRIBUTION: Loreto ( Peru), where is sympatric with N. pithecia (map 8).

NOTE: The male genitalia of this species resemble in some way to those of the poguazu group, especially by the elongated bulb; however, it is here tentatively placed in the platnicki group by the pattern of spination in legs I, the partial fusion of cymbium and bulb, complex conductor, and by the small vesicle at the base of the anterior receptacle in the female genitalia (as in N. platnicki ).

Figures

Fig. 83. Neotrops silvae, new species, male PBI_OON 43316. A. Habitus, dorsal view. B. Same, ventral view. C. Same, lateral view. D. Carapace, dorsal view. E. Cephalothorax, ventral view. F. Same, lateral view.

Fig. 84. Neotrops silvae, new species, male PBI_OON 43316. A. Habitus, anterior view. B–D. Palp. B. Dorsal view. C. Prolateral view. D. Retrolateral view.

Fig. 85. Neotrops silvae, new species, female PBI_OON 43157. A. Habitus, dorsal view. B. Same, ventral view. C. Same, lateral view. D. Carapace, dorsal view. E. Cephalothorax, ventral view. F. Same, lateral view. G. Habitus, anterior view. H. Epigynum, ventral view.

Fig. 86. Neotrops spp. genitalia, cleared. A–B. Neotrops platnicki, new species. C–D, N. pithecia, new species. E–F, N. silvae, new species. A. Internal female genitalia, ventral view (PBI_OON 30620). B. Male palp, retrolateral view (PBI_OON 30567). C. Internal female genitalia, dorsal view (PBI_OON 43168). D. Male palp, retrolateral view (PBI_OON 43168). E. Internal female genitalia, dorsal view (PBI_OON 43157). F. Male palp, retrolateral view (PBI_OON 43316). Abbreviations: ar, anterior receptacle; co, conductor; e, embolus; pp, posterodorsal plate; tr, transverse ridges.