Escaphiella aratau, Platnick & Dupérré, 2009

Platnick, Norman I. & Dupérré, Nadine, 2009, The American Goblin Spiders Of The New Genus Escaphiella (Araneae, Oonopidae), Bulletin of the American Museum of Natural History 2009 (328), pp. 1-151 : 110-113

Escaphiella aratau , new species Figures 697–724 ; map 14

TYPE: Female holotype and male paratype taken in pitfall trap at Fazenda Arataú, Novo Repartimento , Pará, Brazil (June 25– 26, 2003), deposited in MPEG (10775, PBI_OON 29525).

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

DIAGNOSIS: This species resembles E. itys in having a patterned abdomen (fig. 697, 716), but males have symmetrical palps with much less expanded bulbs (figs. 710–713); they can also be distinguished from those of E. cachimbo by the larger palpal femur (fig. 711) and the distally less bent embolus (fig. 712); females have the anterior epigynal sclerite elongated and greatly widened posteriorly (figs. 717, 724).

MALE (PBI_OON 29523): Total length 1.09 (figs. 697, 698, 703). Carapace pale orange, surface of elevated portion of pars cephalica smooth, sides granulate mostly along margins, reaching only halfway up carapace sides; lateral margins with blunt denticles (figs. 699, 704). Eyes: ALE circular, PME squared; ALE touching, ALE-PLE

OON 29513, 29515, 29516, 29518–29523), 98.

DISTRIBUTION: Known only from Pará, Brazil (map 14).

(cross), E. cachimbo (circles), and E. aratau (star).

touching, PME touching throughout most of their length, PLE-PME touching (fig. 700). Sternum pale orange, without radial furrows between coxae I–II, II–III, III–IV, surface smooth, microsculpture absent (fig. 714). Chelicerae, endites, and labium pale orange. Endites anteromedially with spiniform tip (figs. 701, 706–709). Abdomen ovoid; dorsum with striped pigmentation visible under dorsal scuta; book lung covers large, ovoid; pedicel tube medium, ribbed, scutopedicel region unmodified, scutum extending far dorsal of pedicel (fig. 715); dorsal scutum pale orange, covering full length of abdomen, no soft tissue visible from above, middle surface smooth, sides smooth; postepigastric scutum pale orange, sides smooth (figs. 702, 705). PMS present (compound microscope). Legs pale orange. Right and left palps symmetrical, proximal segments pale orange; embolus dark, straight distally (figs. 710– 713); femur enlarged; cymbium and bulb pale orange.

FEMALE (PBI_OON 29525): Total length 1.09 (figs. 718, 722, 723). Abdomen with soft portions of dorsum white with striped pigmentation (figs. 716, 719, 720); epigastric scutum anteriorly with smooth margins. Anterior epignal sclerite widened posteriorly (fig. 717, 721, 724).

OTHER MATERIAL EXAMINED: BRAZIL: Para´: Novo Repartimento, Fazenda Arataú, June 17–18, 2002, pitfall (MPEG 10780, 10786, 10788, PBI_OON 29514, 29517, 29524), 38, June 25–26, 2003, pitfall (MPEG 10776–10779, 10781–10784, 10787, PBI_

Figures

Figs. 697–705. Escaphiella aratau, new species, male. 697. Habitus, dorsal view. 698. Same, ventral view. 699. Carapace, dorsal view. 700. Habitus, anterior view. 701. Endites, ventral view. 702. Abdomen, ventral view. 703. Habitus, lateral view. 704. Carapace, lateral view. 705. Abdomen, lateral view.

Figs. 706–715. Escaphiella aratau, new species, male. 706. Left endite, ventral view. 707. Same, tip. 708. Same, dorsal view. 709. Same, tip. 710. Left palp, dorsal view. 711. Same, retrolateral view. 712. Same, ventral view. 713. Same, prolateral view. 714. Cephalothorax, ventral view. 715. Abdomen, anterior view.

Figs. 716–724. Escaphiella aratau, new species, female. 716. Habitus, dorsal view. 717. Same, ventral view. 718. Carapace, dorsal view. 719. Habitus, anterior view. 720. Same, lateral view. 721. Abdomen, ventral view. 722. Carapace, lateral view. 723. Cephalothorax, ventral view. 724. Epigynum, ventral view.