Neotrops avalosi, 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 : 65-69

publication ID 10.1206/819.1


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scientific name

Neotrops avalosi

sp. nov.

Neotrops avalosi View in CoL , new species

Figures 50– 52 View Fig View Fig View Fig , 53E–F View Fig ; map 2

TYPES: Male holotype and female paratype from Argentina: Corrientes Province: Laguna Brava (road to Santa Ana), - 27.50000 °, - 58.70000 °, Dec. 12, 2004, Ávalos G. and Rubio G. ( MACN-Ar 26503 , PBI_OON 30668 and MACN-Ar 26502 , PBI_OON 30669 , respectively) GoogleMaps ; deposited In MACN-Ar. One male and one female paratypes with same data ( PBI _ OON 30670) ; deposited in CARTROUNNE.

ETYMOLOGY: The specific epithet is a patronym in honor of Gilberto Ávalos (Universidad Nacional del Nordeste, Corrientes), one of the collectors of the type series and many other oonopids in northeastern Argentina.

DIAGNOSIS: Males resemble those of N. yabare in having the conductor bent dorsally about 90 °, but both the conductor and the embolus are proportionately larger (figs. 51B–D, 53F). Females are very similar to those of N. rubioi and N. nigromaculatus by somatic and genital morphology, but are recognized by the subdistal constriction of the anterior receptacle, which is shorter than the posterodorsal plate (fig. 53E).

DESCRIPTION: Male (holotype, PBI_OON 30668). Total length 1.51. Cephalothorax: Carapace orange, 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 dark, needlelike, scattered; nonmarginal pars thoracica setae dark, needlelike; marginal setae dark, needlelike. Clypeus setae dark, needlelike. Eyes ALE, PME subequal, larger than PLE, ALE circular, PME circular, PLE oval; 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 (fig. 50E), 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 backward folded ridge, each longitudinal ridge ends anteriorly in a transverse row of three short setae (fig. 50E); endites less sclerotized anteriorly and ectally to the ridges. Abdomen: Dorsum white. Book lung covers elliptical. Postepigastric scutum pale orange. Spinneret scutum absent. Dorsum setae dark, needle-like. Colulus represented only by setae. Legs: Pale orange; femur IV not thickened, same size as femora I–III, tibia IV specialized hairs on ventral apex present. Leg spination: leg I: femora d1, pv0-0-0-1-1-0, tibiae v2-2-2-2-2-0, metatarsi v2-2-2; leg II: femora d1, pv0-0-0-1- 1-0, tibiae v2-2-2-2-2-0, metatarsi v2-2-2; leg III: femora d0-1-1, tibiae p1-1, v2ap, r1-1, metatarsi p1-1, r1, v2ap; leg IV: femora d1-1- 1, tibiae v1-1-1, d0-1-1; metatarsi p1-1. 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, stout, tapering apically, distal part translucent conductor with the distal half broadly expanded and dorsally bent about 90 °; embolus dark.

FEMALE (paratype, PBI_OON 30669). Total length 1.94. As in male except as noted. Cephalothorax: Carapace pale orange. 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, pv0-0-0-1-1-0, tibiae v2-2-2-2-2-0, metatarsi v2-2-2-2; leg II: femora d1, pv0-0-0-1-1-0, tibiae v2-2-2-2-2-0, metatarsi v2-2-2-2; leg III: femora d0-1-1, tibiae d1, v1ap, r1, metatarsi d0-2, p0-1, v1-0- 1ap; leg IV: femora d1-0-1, tibiae p1-1ap, d2- 0-2, v0-0-1, r1-0, metatarsi d2-2, p1-1, v0-1- 1ap, r1-1. Genitalia: Dorsal view (fig. 53E): anterior receptacle relatively thin and long, with a subdistal constriction. Distal part of the uterus externus with folded margins. Transverse ridges clearly notched. Posterior plate large, covering completely the anterior elements of the internal female genitalia.

OTHER MATERIAL EXAMINED: ARGENTINA: Corrientes : San Miguel, July 17, 2003, Ávalos, G., 1♂, 1♀ (CARTROUNNE PBI _ OON 30675) ; same locality, Mar. 24, 1999, Ávalos, G., 1♂ (CARTROUNNE PBI _ OON 30686). PARAGUAY: Alto Parana´: C.F.A.P., Jan. 01, 1980, C. Dlouhy, 1♀ ( MHNG PBI _ OON 42064 ) .

DISTRIBUTION: Argentina (northern Corrientes), and Paraguay (Alto Paraná) (map 2).

NOTE: Grismado et al. (2010) illustrated several specimens of Neotrops nigromaculatus ; one of them (their fig. 6, PBI_OON 17993), from Picada de los Ciervos, Uruguay, has an anterior receptacle similar to that of N. avalosi (i.e., a subterminal constriction delimiting a small apical bulb). The subsequent finding of several females in Corrientes with similar genital morphology suggests that N. avalosi could also be found in northern Uruguay, but we prefer to wait for the discovery of males of that region as stronger evidence for the sex matching.


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