Neotrops amacuro, 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 : 130-136

Neotrops amacuro , new species

Figures 103–105 , 109C–D ; map 11

TYPES: Male holotype from Venezuela: Delta Amacuro: Piacoa: 11 km W. Piacoa, July 14, 1987, to July 31, 1987, S., J. Peck ( AMNH PBI _ OON 1693 ) ; two female paratypes from Bolívar: Tumeremo: 20 km S. Tumeremo, June 24, 1987, to July 12, 1987, S., J. Peck ( AMNH PBI _ OON 1698). Deposited in AMNH .

ETYMOLOGY: This specific epithet is a noun in apposition taken from the type locality.

DIAGNOSIS: N. amacuro males are distinguished by the nearly cylindrical bulb with relatively short embolus and short, nearly triangular conductor (figs. 104B–D, 109D); females by the thin, narrow anterior receptacle (fig. 105H, 109C).

DESCRIPTION: MALE (holotype, PBI_OON 1693). Total length 1.66. Cephalothorax: Carapace pale orange, broadly oval in dorsal view, pars cephalica strongly 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 absent; marginal setae dark, needlelike. Clypeus setae dark, needle-like. Eyes: the ocular area is not well preserved, the dark area is currently depigmented, all subequal, ALE circular, PME oval, PLE circular; posterior eye row straight from front; ALE separated by more than their diameter, ALE-PLE separated by less than ALE radius, PME separated by less than their radius, 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. Mouthparts: chelicerae, endites, and labium pale orange; cheliceral setae light, evenly scattered. Labium anterior margin indented at middle. Endites distally not excavated, anteromedian tip with backwardfolded ridge, anterior margin truncated, the backward-folded ridges extend to the labium base (fig. 103E). Abdomen: Dorsum pale white. Book lung covers round. 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 (fig. 103C, F). Leg spination: leg I: tibiae v2-2-2-2-2-0-0, metatarsi v2- 2-2-2; leg II: tibiae v2-2-2-2-0-0, metatarsi lost; leg III: femora d1 tibiae p1-1, r1, v1 metatarsi r1-0, v1-2ap; leg IV: femora d1-1, tibiaep1-0, r1-1, v1 metatarsi 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, not fused with bulb; bulb pale orange, 1 to 1.5 times as long as cymbium, nearly cilyndrical, tapering apically, distal part conductor short, translucent, nearly triangular; embolus dark, embolus relatively short, with a wide distal opening with membraneous margins (figs. 104B–D, 109C).

FEMALE (paratype, PBI_OON 1698). Total length 2.19. As in male except as noted. Cephalothorax: Eyes as in male, ocular area not well preserved, dark area depigmented. Sternum precoxal triangles present; setae dark. Labium elongated hexagon. Palp spines absent. Abdomen: Dorsum pale orange. Postepigastric area setae dark, needlelike. Legs: Patella plus tibia I nearly as long as carapace. Leg spination (legs I missing): leg II: femora d1; tibiae v2-2-2-2-2-1(vr); metatarsi v2-2-2-2; leg III: femora d1-1; tibiae r1, v2ap metatarsi p1-1, r1-1, v1; leg IV: femora d1-1; tibiae d1, p1-1, r1-1, v1ap metatarsi d1, p1-1, r1-1, v1-2ap. Genitalia: Dorsal view (fig. 109C): anterior receptacle thin, without distal expansion, muscle insertions not visible; transverse ridge sclerotized, apparently complex, composed of several plates; uterus externus narrow, posterior plate nearly triangular, surpassing dorsally the tip of the antertior receptacle.

OTHER MATERIAL EXAMINED: None.

DISTRIBUTION: Delta Amacuro and Bolívar states, Venezuela (map 11).

NOTE: The male and the females were not collected together but are matched by geographical proximity.

Figures

Fig. 103. Neotrops amacuro, new species, male PBI_OON 01693. 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. 104. Neotrops amacuro, new species, male PBI_OON 01693. A. Carapace, anterior view. B–D. Palp. B. Dorsal view. C. Prolateral view. D. Retrolateral view.

Fig. 105. Neotrops amacuro, new species, female PBI_OON 01698. 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. 109. Neotrops spp. genitalia, cleared. A–B. Neotrops caparu, new species. C–D, N. amacuro, new species. E–F, N. trapellus (Chickering). A. Internal female genitalia, dorsal view (PBI_OON 43162). B. Male palp, retrolateral view (PBI_OON 43162). C. Internal female genitalia, dorsal view (PBI_OON 01698). D. Male palp, retrolateral view (PBI_OON 01693). E. Internal female genitalia, dorsal view (PBI_OON 01696). F. Male palp, retrolateral view (PBI_OON 36843).