scopula

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scopula

(skŏp′yə-lə)
n. pl. scopu·lae (-lē′)
1. A dense brushlike tuft of hairs, as on the feet of certain spiders and insects.
2. A ciliated structure by which certain protozoans attach to a surface.

scop′u·late′ (-lāt′) adj.
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Chelicerae long and strong, reddish dark brown with yellow erect setae scattered dorsally, broad basally, gradually narrow anteriorly; promargin with three teeth, upper very small, median largest; retromargin with three teeth, first two of equal size, third smaller, with dense long dark brown hairs; fangs long and strongly curved, concolour with chelicerae, with dark brown scopulae at base and over fangs.
Maxillae broad, converging anteriorly, blackish brown, having yellow erect setae on outer lateral margin, with distinct black scopulae (hair tufts).
Chelicerae yellowish brown, broad basally, gradually narrow anteriorly; promargin with two teeth, lower small, upper large; retromarginal tooth higher; fangs dark brown, short, strongly curved with scopulae at base.
Legs I to IV uniform brown to pale yellow; some specimens with incomplete grey band arrangement on all legs; anterior leg pairs more robust than posteriors; slightly dense scopulae on metatarsi and tarsi, remaining leg segments covered in fine, less dense setae; leg spines and cusps present.
Endites longer than wide, slightly convergent, with dense scopulae on internal margin.
Legs I to IV uniform pale yellow; dense scopulae on metatarsi and tarsi, remaining leg segments covered in fine, less dense setae; leg spines and cusps present.
Tarsi with three claws, superior claws with 8-10 teeth; scopulae absent; leg spination often varies among individuals, typical leg spination pattern: femur: I p0-0-2, d1-1-0; II p0-0-1, d1-1 0; III p0-0-1, d1-1-0; IV d1-1-0; tibia: I p0-0-1, v2-2-2; II p0-0-1, v2-2-2; III p0-0-1, v1-2-2; IV d1-0-0; r1-1-0, v1-12; metatarsus: I v2-2-2; II v2-2-2; III p0-1-1, r0-1-1, v2-2-2; IV d0-0-1, v1-1-2.
Holarchaeids are minute; leg 1 lacks scopulae and the tarsi of legs 1 and 2 are swollen and have a patch of modified setae; patella 1 is not conspicuously long; the chelicerae lack peg-teeth though there are a few slender teeth on the promargin; there are no stridulatory ridges on the chelicerae nor a sclerotized ring around the spinnerets.
Scopulae present on 2/3 of metatarsi I, on distal half of metatarsi II, 1/3 on III and less than 1/4 distal of metatarsi IV.
Metatarsi I-III with scopulae full, metatarsus IV with scopula reaches to 1/3.
Vellard originally placed the genus in Barychelidae, probably due to the wide labium with few cuspules, absence of tibial apophysis, short apical segment of the posterior lateral spinnerets and well developed leg scopulae, mainly on tarsi I and II, resembling claw tufts.