Type locality. — Indonesia, N Sumatra, Gunung Leuser National Park, Ketambe Research station, primary lowland rainforest.

Type material.— Holotype ♂ from the type locality, in leaf litter, 1.v.-9.viii 1985, Suharto Djojosudharmo; paratypes: numerous male and female paratypes, same data, months iv - viii, 1985 and 1986; some males and females, 23-30.xi.1989, I. Löbl, D. Agosti and D. Burckhardt (MHNG).

Other material. — None. Not found in Bohorok in the northeastern side of Gunung Leuser.

Diagnosis. — See genus diagnosis. For differences with beroni, see there.

Description. — MALE (fig. 685). Total length 2.10 mm. Carapace length 0.90 mm, width 0.60 mm, height 0.25 mm, head width 0.40 mm, width eye group 0.27 mm; abdomen 1.00 mm long, 0.70 mm wide. Leg lengths: leg I 3.40 mm (1.00-1.30-0.65-0.45), leg II 2.90 mm (0.85-1.00-0.60-0.45), leg III 2.35 mm (0.65-0.70-0.55-0.45), leg IV 3.55 mm (1.00- 1.15-0.80-0.60), palp 0.35-0.20-0.20+apophysis 0.10-0.40 mm. Carapace (fig. 685), mouthparts and legs orange, carapace sometimes with greyish radiating streaks and a submarginal dark band, anterior femora and tibia I a little darker in both sexes; abdomen pale buff with a white patch dorsally in front of spinnerets, with a dorsal scutum, covering the abdomen over 2/3 of its length and width. Anterior eyes close together, PME the smallest and not surrounded with black, variable in size and shape, often slitlike or oval, two times or more their diameter apart. Chelicerae figs 687-688. Spines of anterior legs very strong (fig. 686). Leg spination: femora I, II and IV with 1 short dorsal spine proximally, femur I with 0-0-1pd, tibia I with 7 pair of ventral spines, tibia II most often with 6pv and 5rv in a row; metatarsus I and II with 2- 2v. Palp figs 689-690, femur with slight excavation ventro-distally, sperm duct thin, encircling tegulum, embolus an enormously enlarged and sclerotized bifid sclerite, tegular apophysis small, lanceolate.

FEMALE (fig. 686). Total length 2.25 mm. Carapace length 1.00 mm, width 0.85 mm, height 0.30 mm, head width 0.45 mm; abdomen 1.20 mm long, 0.84 mm wide, epigyne 0.35 mm wide. Leg lengths: leg I 3.35 mm (0.90-1.30-0.70-0.45), leg II 2.85 mm (0.85- 1.05-0.55-0.40), leg III 2.10 mm (0.60-0.60-0.50-0.45), leg IV 3.75 mm (1.00-1.20- 0.85-0.70), palp 0.40-0.16-0.20- 0.35 mm. Carapace, eyes, mouthparts and legs as in male. Epigyne figs 691-692, heavily sclerotized, with centrally one and laterally two circular dark structures. Vulva fig. 693; a bifid structure laterally seems to represent coiled tubes.

Distribution.— NE Sumatra, Gunung Leuser. Found abundantly in Ketambe; they were not found in Bohorok. The ecological niche of Sudharmia has in Bohorok been occupied by Koppe minuta, a corinnine species (see p. 280). In the last decade of the 20th century, the forest of Ketambe has been destroyed by logging.

Etymology.— pongorum, after the orang utan; Ketambe has long been the base where important studies on the biology of these apes were carried out.