Brignolia sukna, Platnick & Dupérré, 2011

Platnick, Norman I. & Dupérré, Nadine, 2011, The Goblin Spider Genus Brignolia (Araneae, Oonopidae), Bulletin of the American Museum of Natural History 2011 (349), pp. 1-131 : 92

Brignolia sukna , new species

Figures 549–586

TYPE: Male holotype and female allotype from taken at an elevation of 900–1000 m at Num Khok, 27u339N, 87u189E, Kosi, Nepal (June 8–10, 2001), deposited in NHB (PBI_OON 31834).

ETYMOLOGY: The specific name is a noun in apposition taken from the only Indian locality record for this species.

DIAGNOSIS: Males of this species resemble those of B. bengal in having greatly enlarged pedicel triangles (figs. 571, 575), but can easily be distinguished by the distally thickened palpal bulb (figs. 559, 561); females of B. bengal are unknown, but those of B. sukna can be recognized by the relatively short and wide posterior tube (figs. 585, 586).

MALE (PBI_OON 15772, figs. 549–572): Total length 1.90. Carapace orange-brown, with dark brown egg-shaped patches behind eyes; pars cephalica strongly elevated in lateral view; posterolateral edge with pair of pits, posterior declivity with distinct shoulders, each shoulder with four tubercles, most lateral tubercle enlarged, posterior margin squared, with relatively wide lateral thickened sclerotizations. Sternum covered with small round pits. Scuto-pedicel region with W-shaped scutal ridge, with enlarged tubercle on each side reaching to pedicel triangle. Palpal tibia ventrally expanded at tip; distal portion of palpal bulb with elaborately ridged process at tip.

FEMALE (PBI_OON 31834, figs. 573– 586): Total length 2.31. Posterior margin of epigastric furrow with only slight, posterior directed, triangular projection at midline; posterior tube relatively short.

OTHER MATERIAL EXAMINED: India: West Bengal: Sukna , Oct. 7, 1978, elev. 200 m (C. Besuchet, I. Löbl, MHNG PBI_OON 12834), 1 -. Nepal: Ilam: Bililate, near Ilam, Apr. 8, 1988, moist soil, remnant trees around spring, elev. 1330 m (J. Martens, W. Schawaller, NMB PBI_OON 15980), 2 -; 5 km N Sanishare, feet of Siwalik Mountains, Apr. 3–5, 1988, mixed Shorea forest, elev. 270–300 m (J. Martens, W. Schawaller, NMB PBI_OON 15711, 15843), 2 -, 1 U. Kosi: Num Khok , 27u339N, 87u189E, June 8–10, 2001, elev. 900–1000 m ( NHB PBI_OON 31834), 3 U ; Arun valley , bottom, between Hedangna and Num, June 6–8, 1988, subtropical forest, elev. 950–1000 m (J. Martens, W. Schawaller, NMB PBI_OON 15772), 3 -; Arun valley, above Num, near main bridge, Apr. 21, 1984, ravine sides, elev. 1100 m (I. Löbl, A. Smetana, MHNG PBI_OON 15525), 3 -. Taplejung : Tamur Khola , Chirua , Sept. 14, 1983, soil, ravine, elev. 1200 m (J. Martens, Daams, NMB PBI_OON 15754), 1 -.

DISTRIBUTION: Northern India and Nepal.

Figures

Figs. 549–556. Brignolia sukna, new species, male. 549. Carapace, dorsal view. 550. Same, anterior view. 551. Same, posterior view. 552. Cephalothorax, ventral view. 553. Abdomen, anterior view. 554. Same, ventral view. 555. Carapace, lateral view. 556. Abdomen, lateral view.

Figs. 557–560. Brignolia sukna, new species, male. 557. Left palp, prolateral view. 558. Same, retrolateral view. 559. Left palpal bulb, prolateral view. 560. Same, retrolateral view.

Figs. 561–568. Brignolia sukna, new species, male. 561. Left palp, prolateral view. 562. Same, retrolateral view. 563. Left palpal bulb, retrolateral view. 564. Same, dorsal view. 565. Same, ventral view. 566. Embolus, dorsal view. 567. Labium and endites, ventral view. 568. Tip of endite, ventral view.

Figs. 569–576. Brignolia sukna, new species, male (569–572) and female (573–576). 569, 573. Carapace, posterior view. 570, 574. Posterior margin of carapace, dorsal view. 571, 575. Abdomen, anterior view. 572, 576. Pedicel tube, ventral view.

Figs. 577–586. Brignolia sukna, new species, female. 577. Carapace, dorsal view. 578. Same, anterior view. 579. Same, posterior view. 580. Cephalothorax, ventral view. 581. Abdomen, anterior view. 582. Same, ventral view. 583. Carapace, lateral view. 584. Abdomen, lateral view. 585. Genitalia, ventral view. 586. Same, dorsal view.