(Figs 971–974)

Material examined. Holotype: ♂, INDONESIA, Sumatra, West Sumatra Province: Anai Valley, at the foot of Mt. Singalang, 6 km south of Padang Panjang (0028'38"S, 100°21'14"E), 500 m, primary rainforest, 1 June 2006, leg. P.J. Schwendinger (MHNG, Sum–06/03). Paratype: 1♂, same data as holotype (MHNG).

Diagnosis. Mallinella onoi sp. nov. resembles M. thailandica sp. nov. in general conformation of the male palp, particularly in a relatively broad embolus with modification at half its length (Fig. 971). The trapezoidal denticle on the TA found in this new species is rather large and broader at the base whereas it is triangular and sharply pointed in the latter species.

Etymology. The specific epithet is a patronym in honor of Dr. H. Ono for his contributions to our knowledge of spider in Southeast Asia; name in genitive case.

Description. Male (holotype). Total length 7.30; prosoma 4.50 long, 3.25 wide. Eye sizes and interdistances: AME 0.30, ALE 0.20, PME 0.20, PLE 0.20, AME–AME 0.14, AME–ALE 0.38, PME–PME 0.20, PME–PLE 0.52; MOQ: 0.60 long, 0.54 anterior width, 0.52 posterior width. Leg measurements: I 16.70 (4.00, 5.24, 4.20, 3.24), II 13.85 (3.50, 4.36, 3.48, 2.74), III 13.92 (3.66, 4.20, 3.76, 2.32), IV 19.26 (4.66, 5.66, 6.00, 2.90).

Coloration. Carapace brown. Sternum yellowish brown. Chelicerae dark brown. Legs yellowish. Dorsum of opisthosoma dark brown. Dorsal pattern: first and second pairs fused, forming triangular patches; third and fourth pairs represented by pale round spots; fifth and sixth pairs by transverse bands.

Palp (Figs 971–974). RTA digitiform, elongated and slender, lateral margins parallel in ventral view, apex blunt. TA rostrated; apico-prolateral fold triangular, apex blunt, directed anteromesad; apico-prolateral process short and slender, apex sharply pointed. Embolic base narrowed, arranged in transverse position; membranous area triangular. Embolus broad at base, provided with trapezoidal flange at half its length.

Female. Unknown.

Natural history. The types of M. onoi sp. nov. were collected in a gallery primary evergreen forest.

Distribution. Known only from the type locality on Sumatra.