Siamspinops aculeatus
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Ordo: Araneae
Familia: Selenopidae
Genus: Siamspinops
Name
Siamspinops aculeatus (Simon, 1901) comb. n. – Wikispecies link – Pensoft Profile
- Selenops aculeatus Simon 1901[1]: 64.
Type material
Female holotype (UMZC I.47430): Gunong, Malaysia [5°55'N, 102°20'E].
Diagnosis
The female of this species can be easily distinguished from all others by the copulatory organs, as the sperm ducts are coiled 16 times, and a posterodorsal fold is present (Fig. 4). Male unknown.
Remarks
Selenops aculeatus comb. n. is assigned to Siamspinops based on the morphology of the numerous spermathecal coils and the very spiny legs (Dankittipakul and Corronca 2009[2]).
Description
Holotype:Color: carapace uniformly yellow-brown; sternum pale yellow; chelicerae pale yellow with darker infuscations anteriorly and laterally; maxillae pale yellow-brown, lightening distally; labium pale yellow-brown, lightening distally; abdomen dorsally reddish-brown, possibly faded; ventrally pale reddish; legs orange-brown with annulations on femora, patella and tibia, darkening distally. Cephalothorax:setae long and thin; 0.9 times longer than broad; fovea longitudinal, broad, very shallow. Eyes:AER slightly recurved; PER recurved; PME larger than AME, PLE largest; eye group width 1.54; eye diameters, AME 0.14, ALE 0.08, PME 0.20, PLE 0.20; interdistances AME-ALE 0.32, PME-PLE 0.29, ALE-PLE 0.2, AME-PME 0.03; ocular quadrangle AME-AME 0.45, PME-PME 0.89; clypeus 0.12 high. Mouthparts:chelicerae with a few stout setae medially and anteriorly; lateral boss present, smooth; promargin with 3 teeth, retromargin with 2 teeth; maxillae longer than broad, with tuft of conspicuous setae distally; labium distally rounded. Sternum:0.99 times longer than broad, posteriorly indented. Pedipalp:tarsus slightly swollen, claw broken off. Legs:leg I much shorter than III, slightly shorter than IV; leg formula 3241; scopulae absent on all legs; tarsus I–IV with strong claw tufts; claws without teeth; spination: leg I, Fm pr 1–1–0, d 1–1–1, rl 0; Ti 2–2–2–2–2–2–2; Mt v 2–2–2–2–2; Ti and Mt I and II with strong spines; leg II, Fm pr 0, d 1–1–1, rl 0; Ti 2–2–2–2–2–2–2; Mt 2–2–2–2–2; leg III, Fm pr 0, d 1–1–1, rl 0; Ti 0; Mt 0; leg IV, Fm pr 0, d 1–1–1, rl 0; Ti 0; Mt 0. Abdomen:terminal setal tufts absent. Epigyne:lateral lobes indistinct, median ovoid area, copulatory openings located posterolaterally, epigynal pockets present; internally ducts coiled c. 15 times, posterodorsal fold present (Figs 3–4). Dimensions: Total length 6.68. Cephalothorax length 2.57, width 2.87. Sternum length 1.48, width 1.50. Abdomen length 3.95, width 2.86. Pedipalp: Fm 0.75, Pt 0.48, Ti 0.56, Ta 0.72, (total) 2.51. Leg I: Fm 2.62, Pt 1.12, Ti 2.31, Mt 1.73, Ta 0.92, (total) 8.70. Leg II: Fm 3.39, Pt 1.17, Ti 2.73, Mt 2.05, Ta 0.89, (total) 10.23. Leg III: Fm 3.82, Pt 1.09, Ti 2.90, Mt 2.18, Ta 1.01, (total) 11.00. Leg IV: Fm 3.29, Pt 1.06, Ti 2.29, Mt 1.74, Ta 0.91, (total) 9.29.
Natural history
No data
Distribution
The type locality only (Map 1).
Taxon Treatment
- Crews, S; Harvey, M; 2011: The spider family Selenopidae (Arachnida, Araneae) in Australasia and the Oriental Region ZooKeys, 99: 1-104. doi
Other References
- ↑ Simon E (1901) On the Arachnida collected during the Skeat expedition to the Malay Peninsula. Proceedings of the Zoological Society of London 1901:45-84.
- ↑ Dankittipakul P, Corronca J (2009) Siamspinops, a new selenopid genus from southeast Asia (Arachnida, Araneae). Organisms, Diversity and Evolution 9: 69e1–69e12.
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