Teutamus vittatus, Deeleman-Reinhold, Christa, 2001

Deeleman-Reinhold, Christa, 2001, Forest Spiders of South East Asia With a revision of the sac and ground spiders (Araneae: Clubionidae, Corinnidae, Liocranidae, Gnaphosidae, Prodidomidae and Trochanteriidae)., Forest Spiders of South East Asia With a revision of the sac and ground spiders- Family Liocranidae, Leiden, Netherlands: Brill Leiden; Boston; Köln, pp. 400-505 : 487-488

publication ID

https://doi.org/ 10.5281/zenodo.814704



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scientific name

Teutamus vittatus

sp. nov.

Teutamus vittatus View in CoL sp. n. ( figs 832-836 View Figs 830 - 831 , map 40 View Map 40 )

Type locality. — N Borneo, Sabah, Mount Kinabalu National Park at Head Quarters , 1550 m.

Type material.— Holotype O’ from the type locality, montane primary forest, leaf litter, l- 5.v. 1991, C.L. Deeleman, A.P.B. Deeleman and Y. Roerink; paratypes: 1 ♂, same data as holotype ; 1 ♂ 2 ♀, 27.vi. 1979 ; 1 ♀, 23-25.vii. 1980, P.R. and C.L. Deeleman .

Other material. — See under note.

Diagnosis.— This is the species in which the abdomen shows the most contrasting pattern: distinct from all other species by the white parallel bands posteriorly on the flanks of the abdomen, and the white abdominal underside sharply set off from the dark grey upper side. Close to T. andrewdavisi , males are distinct from that species by the long slender curved conductor, further in the palpal tibia by the presence of a ventral chitinous ridge and a lobe on the patella. In the female the widely separated elongate spermathecae at the end of long curved ducts and the bursae are clearly visible through the tegument; the openings are central, juxtaposed.

Description.— MALE. Total length 4.15 mm. Carapace length 2.25 mm, width 1.40 mm, height 0.70 mm, width head 0.75 mm at level of PER, width eye group 0.57 mm; abdomen length 1.85 mm, width 1.00 mm. Leg length: leg I 7.95 mm (2.00-2.85-2.00-1.10); leg II 6.20 mm (1.60-2.25-1.40-0.95); leg III 5.00 mm (1.35-1.60-1.25-0.80); leg IV 7.05 mm (1.90-2.25-1.90-1.00), palp 0.55-0.25- 0.25-0.65 mm. Colour and sculpture as in the other species; all coxae and femora reddish orange, tibia I and II reddish orange, tips of femora and anterior tibiae and all patellae, tibiae, metatarsi and tarsi pale yellow. Abdomen ( fig. 832 View Figs 830 - 831 ): posteriorly on the flanks a white parallel stripe on a dark grey background, connected through thin line to white pre-anal spot; white abdominal underside sharply set off from dark grey upper side. Spination: femur I 3 pl, tibia I 8 pv, 8rv, tibia II 7 pv, 7rv, metatarsus I 5 pv, 5rv, metatarsus II 5 pv, 4rv. Abdominal dorsal and ventral scutum cut straight posteriorly, distal 4/3 retracted under scutum, in holotype scuta distally not yet developed, and rear part normal. Collar with 3 ridges. Male palp figs 833-834 View Figs 830 - 831 , patella with apical round chitinous lobe, tibia lacking distal apophysis, proximal apophysis triangular, ventrally a chitinous ridge; bulb apically with a long slender U-curved conductor, embolus based apically at tegulum, visible on prolateral side.

FEMALE. Length 4.25 mm. Carapace length 2.15 mm, width 1.50 mm, head width 0.85 mm, eye group width 0.65 mm, abdomen length 2.25 mm, width 1.25 mm, epigyne 0.35 mm wide, 0.30 mm long. Leg lengths: leg I 7.65 mm (2.00-3.00-1.65-1.00), leg II 6.05 mm (1.50-2.25-1.40-0.90), leg III 4.90 mm (1.25-1.65-1.15-0.85), leg IV 7.10 mm (1.85- 2.25-1.85-1.15), palp 0.65-0.25-0.40- 0.65 mm. Pattern of abdomen as in male, dorsal surface dark grey, ventral post-genital surface white. Spine formula: femur I 3 pl, tibia I 8 pv, 8 rv, tibia II 8 pv, 7rv, metatarsus I 5-6 pv, 5rv, metatarsus II 4 pv, 5rv. Colour of legs more variable than in male, in two specimens legs all pale yellow except coxae and basal part of femur I and II, in the third specimen as the male, and posterior tibiae also reddish. Epigyne fig. 835 View Figs 830 - 831 , openings central, in five specimens, one (Tuaran) with very large plugs, one specimen with left opening plugged, three others openings unplugged; vulval ( fig. 836 View Figs 830 - 831 ) openings wide, with hood, narrowing inside, dorsally a U-turn towards into insemination ducts, the latter coiling helicoidally back to surface, then arching laterally towards spermathecae; bursae well visible through tegument at the anterior end of epigyne, distance between bursae variable.

Distribution.— W Sabah, National Park Mt. Kinabalu at 1550 m.

Etymology.— vittatus (Lat.) = bound with a ribbon on the abdomen.

Note.— A male and 3 females from lower down in the Kinabalu National Park at Poring Hot Springs, 600 m, are similar to vittatus , but males differ by the tibial apophysis being more like that in andrewdavisi , with uptilted tip bearing a bushel of stiff setae; females have the epigynal openings juxtaposed, and ducts are arched anterior to bursae.

Two females from Tuaran in West Sabah, 450 m, found in the litter of a Hevea plantation, are distinct from vittata by the epigynal openings,which are further apart; the venter and flanks are all white, and lack the black bar which is set off against lateral white stripe.













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