Neotrops sciosciae, 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 : 83-90

Neotrops sciosciae , new species

Figures 64–68 , 69C–G ; map 4

TYPES: Male holotype and female paratype from Argentina: Buenos Aires Province: Isla Martín García , marginal forest, June 06, 2004, to June 08, 2004, C. Scioscia et al. col. ( MACN-Ar 26073 PBI_OON 15079 and MACN-Ar 26076 PBI_OON 15081 respectively). Deposited in MACN-Ar.

ETYMOLOGY: The specific epithet is a patronym in honor of Cristina L. Scioscia (MACN), collector of the type series.

DIAGNOSIS: Both sexes resemble N. poguazu in having an anteriorly incised sternum (figs. 64E, 66E), but the males are recognized by the copulatory bulb with an S-shaped and anteroventrally directed additional element, and a thin conductor (fig. 65B–D, 69D), and females by the small lateral curved sclerites (apodemes?) below the epigastric furrow (figs. 66H, 68B, D, 69C, E–G).

DESCRIPTION: MALE (holotype, PBI_OON 15079). Total length 2.34. Cephalothorax: Carapace yellow, ovoid 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 in Ushaped row; nonmarginal pars thoracica setae present; marginal setae dark, needlelike. Clypeus setae dark, needlelike. Eyes all subequal, all eyes circular; posterior eye row procurved from front; ALE separated by more than their diameter, ALE–PLE touching, PME touching, PLE–PME separated by PME radius to PME diameter. Sternum longer than wide, yellowish white, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, anterior margin with deep incision of the stenum (for receiving posteriorly elongated labium) giving an elongated heart shape (fig. 64E); setae sparse, evenly scattered. Mouthparts: chelicerae, endites, and labium yellowish white. Chelicerae and endites yellow, labium orange, apparently more sclerotized than the sternum; cheliceral setae light, evenly scattered. Labium anterior margin with six or more setae, indented in middle, posterior margin with backward-pointing prolongation, which inserts into the anterior sternal margin (fig. 64E). Endites anteromedian part membranous, rebordered by a dark sclerotized lateral ridge. Abdomen: Dorsum light gray. Book lung covers ovoid. Postepigastric scutum yellow. Spinneret scutum absent. Dorsum setae dark, needlelike. Colulus represented only by setae. Legs: Yellow; femora III and IV thickened. Leg spination: leg I: femora pv0-0-0-1-1, tibiae v2-2-2-2-2-0, metatarsi v2-2-2-2; leg II: femora pv0-0-0-1-1, tibiae v2-2-2-2-2-0, metatarsi v2-2-2-2; leg III: femora d1-1 tibiae d2-2, v1, metatarsi v2ap; leg IV: femora d1-1-1 tibiae d2-1-2, v1 metatarsi v2ap. Trichobothria not examined. Genitalia (figs. 65B–D, 69D): Palp proximal segments yellow; with a translucent, small, acute conductor and an additional prolateral-ventral S-shaped projection, more sclerotized; femur normal size, two or more times as long as trochanter; cymbium yellow, ovoid in dorsal view, not fused with bulb; bulb white, more than two times as long as cymbium, slender, elongated; embolus dark.

FEMALE (PBI_OON 15080). Total length 2.30. As in male except as noted. Cephalothorax: Carapace broadly oval in dorsal view; nonmarginal pars cephalica setae dark, needlelike; nonmarginal pars thoracica setae dark, needlelike. Sternum precoxal triangles present, setae dark. Mouthparts: chelicerae, endites, and labium yellow. Chelicerae and endites yellow, labium orangish, not as sclerotized as in male; cheliceral setae dark. Labium with posterior prolongation (and sterna incision) not as extreme as in male (fig. 66E). Palp spines absent. Abdomen: Dorsum light gray. Postepigastric area setae dark, needlelike. Legs: Patella plus tibia I nearly as long as carapace, femora III and IV thickened (not as much as in male). Leg spination: leg I: femora pv0-0-0-1-1, tibiae v2-2-2-2-2-0, metatarsi v2-2-2-2; leg II: femora pv0-0-0-1-1, tibiae v2-2-2-2-2-0, metatarsi v2-2-2-2; leg III: femora d1-1, tibiae d2-2, v1, metatarsi d2-2, v2-3-2ap; leg IV: femora d1- 1-1, tibiae d2-1-2; v1, metatarsi d2-2-1; v1-1- 2ap. Genitalia (fig. 69C): Anterior receptacle relatively short, gradually widened distally, with an elongated stalk and mushroomshaped distal ‘‘head,’’ with accessory glands in distal part of stalk; posterior gonopore margin with small curved sclerites (figs. 66H, 68B, D, 69C, E–G). Variation: other specimens have the stalk of the anterior receptacle not at all widened (fig. 69E–G).

OTHER MATERIAL EXAMINED: Same data as the types, 4♀ ( MACN-Ar 26074 PBI _ OON 15080) ; Entre Ríos: Dept. Colón: P. Nac. El Palmar, sendero a sitio histórico La Calera del Palmar , - 31.86978 ° - 58.20893 °, 3 m, Aug. 06, 2011, Ramírez et al., MACN-Ar, 1♂ ( MACN-Ar 27989 PBI _ OON 42108) ; Misiones: 17 de Octubre , Oct. 01, 1954, 1♀ ( MACN-Ar 20174 PBI _ OON 14929) ; Santa María , Oct. 01, 1953, De Carlo, R. Schiapelli, Viana, M. Galiano ( MACN-Ar 3777 PBI _ OON 14786) ; Nov. 01, 1953, to Dec. 01, 1953, J.M. Viana, 1♀ ( MACN-Ar 3514 PBI _ OON 14793) ; June 01, 1960, J.M. Viana, 1♀ ( MACN-Ar 20072 PBI _ OON 14928). URUGUAY: Rio Negro: Fray Bentos , - 33.11305 °, - 58.25138 °, Mar. 24, 2009, 1♂, 1♀, 1 juvenile ( FCE 2312 PBI _ OON 42199) ; same locality, Dec. 20, 2007, 1♀ ( FCE PBI _ OON 42856) .

DISTRIBUTION: Isla Martín García (in the Río de la Plata estuary), eastern Entre Ríos, and Misiones, Argentina, and Río Negro, Uruguay (map 4).

NATURAL HISTORY: The male from El Palmar was collected by hand at night, wandering in the low foliage in a gallery forest near the Uruguay River.

Figures

Fig. 64. Neotrops sciosciae, new species, male PBI_OON 15079. 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. 65. Neotrops sciosciae, new species, male PBI_OON 15079. A. Carapace, anterior view. B–D. Palp. B. Dorsal view. C. Prolateral view. D. Retrolateral view.

Fig. 66. Neotrops sciosciae, new species, female PBI_OON 15080. 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. Same, anterior view. H. Epigynum, ventral view.

Fig. 67. Neotrops sciosciae, new species, female PBI_OON 14928. A. Carapace, dorsal view. B. Cephalothorax, ventral view. C. Same, lateral view. D. Mouthparts, ventral view. E. Ocular area, dorsal view. F. Same, anterior view. G. Serrula, lateral view.

Fig. 68. Neotrops sciosciae, new species, female PBI_OON 14928. A. Internal female genitalia, dorsal view. B. Same, anterior view. C. Same, base of anterior receptacle, detail of the gland ducts at the base. D. Same, lateral sclerite. E. Carapace platelets. Abbreviations: ar, anterior receptacle; pp, posterodorsal plate; sc, lateral sclerite; tr, transverse ridges.

Fig. 69. Neotrops spp. genitalia, cleared. A–B. Neotrops poguazu, new species, C–G, N. sciosciae, new species. A. Internal female genitalia, dorsal view (PBI_OON 42069). B. Male palp, retrolateral view (PBI_OON 14767). C, G, Internal female genitalia, dorsal view, E–F, same, ventral view, C, F (PBI_OON 15080, two specimens), E (PBI_OON 14793), G (PBI_OON 14786). D. Male palp, retrolateral view (PBI_OON 15079). Abbreviations: ar, anterior receptacle; co, conductor; e, embolus; pp, posterodorsal plate; tr, transverse ridges; sc, lateral sclerites; ue, uterus externus; asterisk (*) 5 additional distal apophysis.