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Lou FCD



Posts: 5455
Joined: Jan. 2006

(Permalink) Posted: Oct. 20 2009,21:03   

Nasty-Big Orb Weaving Spider discovered.

Quote
Description: Female paratype: Total length 39.7. Prosoma 14.3 long, 10.9 wide, 8.7 high at head region; dark red-black. High head region, low thoracic region. Carapace densely covered with thin white hairs; mid-carapace humps large and rounded. Carapace lateral edge at thoracic region ridged. Sternum 6.9 long, 5.5 wide, widest anteriorly, with paired sternal humps adjacent to coxae 1–4, the third paired hump enlarged; a large unpaired projection on anterior sternum. Sternum dark red-brown (in alcohol) with a small yellow spot at each paired hump. Labium black, yellow frontally and medially. Maxillae black, medially white. Clypeus height 1.25. Legs and palp unicolor dark red (in alcohol). Leg formula 1, 2, 4, 3. Coxae 3 and 4 with a conspicuous ventral bulge. Femora with sparse warts. Tibiae 1, 2 and 4 with a conspicuous distal tuft of setae. Leg I length 75.4 (femur 21.7, patella 5.1, tibia 18.9, metatarsus 25.4, tarsus 4.3). Opisthosoma massive, widest anteriorly, 27.3 long, 12.4 wide (frontally), 12.7 high, extended 4.9 beyond spinnerets. Dorsum (in ethanol) brown with a broad anterior yellow notched pattern, a mid-posterior paired and a caudal unpaired yellow patch; lateral opisthosoma brown with yellow spots and stripes; venter brown, with two irregularly shaped conspicuous yellow transverse bands. Epigynum a protruding sclerotized area and a posterior transverse plate with slit-like, medially converging copulatory openings (Fig. 2C–D). Round spermathecae juxtaposed medially. Copulatory ducts complex and long, fertilization ducts massive.


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