Neotrops yabare, 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 : 72-75

Neotrops yabare , new species

Figures 56–58 , 60A–B ; map 6

TYPES: Male holotype from Bolivia: Santa Cruz: Chiquitos: Yabaré ( Estación de la Univ. A. Gabriel R. Moreno ), N de Tres Cruces, Transitional Chaco-Chiquitano Forest, leaf litter, 260 m, - 16.44166 °, - 62.17250 °, Oct. 20, 2010, to Oct. 24, 2010, Grismado, C., Ávila S. and Pérez, M. ( PBI_OON 43201 ) ; deposited in CBF. Female paratype, with same data (MACN-Ar 28435 PBI _ OON 43126) ; deposted in MACN-Ar.

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

DIAGNOSIS: Males resemble those of N. avalosi in having a strongly bent conductor, but have both the conductor and embolus proportionately smaller (figs. 57B–D, 60B). Females are recognized by the widened, rounded anterior part of the anterior receptacle, with two small lateral projections (fig. 60A).

DESCRIPTION: MALE (holotype, PBI_OON 43201). Total length 1.66. Cephalothorax: Carapace yellow-brown, broadly oval in dorsal view, pars cephalica strongly elevated in lateral view, anteriorly narrowed to less than half their maximum width; lateral margin straight; nonmarginal pars cephalica setae absent; nonmarginal pars thoracica setae absent; marginal setae dark, needlelike. Clypeus setae dark, needlelike. Eyes all subequal, all eyes circular; posterior eye row procurved from front; ALE separated by their radius to 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, yellow-brown, anterior margin unmodified, posterior margin not extending posteriorly of coxae IV; setae sparse, densest laterally. Mouthparts: chelicerae, endites, and labium yellow-brown; cheliceral setae dark, evenly scattered. Labium anterior margin indented at middle; with six or more setae on anterior margin. Endites distally not excavated, anteromedian tip unmodified, with lateral ridges slightly more sclerotized (fig. 56E). Abdomen: Dorsum pale white. Book lung covers ovoid. Postepigastric scutum yellow-brown. Spinneret scutum absent. Dorsum setae dark, needlelike. Colulus represented only by setae. Legs: Yellowbrown; femur IV not thickened, same size as femora I–III. Leg spination: leg I: femora pv0-0-1-1-0, tibiae v2-2-2-2-2-0, metatarsi v2- 2-2; leg II: femora pv0-0-1-1-0, tibiae v2-2-2- 2-2-0, metatarsi v2-2-2; leg III: femora d1-1, tibiae r1, p1-1, v1ap, metatarsi p1-1; leg IV: femora d1-1-1, tibiae p1-0-1, r1-0-1, v1, metatarsi d1ap, p1-0-1, r1-0-1, v1ap. Trichobothria not examined. Genitalia: Palp proximal segments yellow-brown; femur normal size, two or more times as long as trochanter; cymbium yellow-brown, narrow in dorsal view, not fused with bulb; bulb yellow, 1 to 1.5 times as long as cymbium, stout, tapering apically; conductor with distal part translucent, broadly expanded and bent dorsally about 90 °; embolus dark (figs. 57B–D, 60B).

FEMALE (paratype, PBI_OON 43216, apparently not completely sclerotized after final molt). Total length 1.51. As in male except as noted. Cephalothorax: Carapace yellowish white, anteriorly narrowed to between 0.5 and 0.75 times its maximum width; nonmarginal pars cephalica setae dark, needlelike, scattered; nonmarginal pars thoracica setae dark, needlelike. Eyes PLE oval. Sternum yellowish white, precoxal triangles present; setae abundant, dark, evenly scattered (fig. 58E). Mouthparts: chelicerae, endites, and labium yellowish white. Labium elongated hexagon. Palp spines absent. Abdomen: Postepigastric scutum whitish. Postepigastric area setae dark, needlelike (fig. 58H). Legs: White; patella plus tibia I nearly as long as carapace, tibia IV specialized hairs on ventral apex present. Leg spination: leg I: femora d1- 0, pv0-0-1-1, tibiae v2-2-2-2-2-0, metatarsi v2-2-2; leg II: femora d1-0, pv0-0-1-1, tibiae v2-2-2-2-2-0, metatarsi v2-2-2; leg III: femora d1-1, tibiae d1, p1-1, r0-0-1, v2ap, metatarsi d1-1, p1-1, v1-2ap; leg IV: femora d1-1, tibiae d1, p1-1, r1-0-1, v1-2ap, metatarsi d1-1, p1-1, r1, v1-0-2ap. Genitalia: Dorsal view: anterior receptacle with a very narrow base and rounded tip that bears two small lateral, flattened projections (fig. 60A).

OTHER MATERIAL EXAMINED: None.

DISTRIBUTION: Known only from the type locality, in Santa Cruz, southeastern Bolivia (map 6).

NATURAL HISTORY: The specimens were collected sifting litter and with pitfall traps in a xerophilous forest.

Figures

Fig. 56. Neotrops yabare, new species, male PBI_OON 43201. 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. 57. Neotrops yabare, new species, male PBI_OON 43201. A. Carapace, anterior view. B–D. Palp. B. Dorsal view. C. Prolateral view. D. Retrolateral view.

Fig. 58. Neotrops yabare, new species, female PBI_OON 43216. 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. 60. Neotrops spp. genitalia, cleared. A–B. Neotrops yabare, new species. C, N. izquierdoi, new species. D, N. piacentinii, new species. A. Internal female genitalia, ventral view (PBI_OON 43216). B. Male palp, retrolateral view (PBI_OON 43201). C. Internal female genitalia, dorsal view (PBI_OON 42026). D. Male palp, retrolateral view (PBI_OON 43362).