Cyriocosmus fernandoi new species

Figs 13–14, 29, 35, 46, 59–60

Holotype male, IBSP 10966 from Pontes & Lacerda, Mato Grosso, U.H.E. Guaporé, Area 2, in the morning, I. Knysak & G. Puorto, 6 October 2002. Paratypes: 1 female IBSP 10967, from Pontes & Lacerda, Mato Grosso, U.H.E. Guaporé, Area 1, I. Knysak & G. Puorto, 9 October 2002; 1 female, IBSP 10975, from Vale de São Domingos, Mato Grosso, U.H.E. Guaporé, RGI 2525, C. Strussmann, 3 June 2002; 1 female, IBSP 10972 from the area between Vale de São Lourenço and Pontes & Lacerda, Mato Grosso, U.H.E. Guaporé (Coatá Operation), I. Knysak, 11 June 2002; 4 females from same locality and collector, IBSP 10973, 5 June 2002; IBSP 10974, B26, Area S1, 6 October 2002; IBSP 10976, B28, RGI 2306, 3 October 2002 and IBSP 10977, B28, RGI 2307, 3 October 2002.

Etymology: The specific name is a patronym in honor of Fernando Pérez­Miles, an important Uruguayan mygalomorph researcher who has contributed to the knowledge of theraphosid taxonomy.

Diagnosis: The female can be distinguished from all species in the genus, except C. fasciatus and C. elegans, by having four clear stripes on each side of the dorsal abdomen (Fig. 46). Differs from C. fasciatus by having the clear central patch covering less than 80% of the dorsal abdomen and from C. elegans by the central patch shape. The male can be distinguished from C. fasciatus, C. ritae, C. blenginii and C. sellatus by not having a retrolateral field of spiniform hairs on the palpal tibia. It differs from C. chicoi and C. nogueira­netoi new species by having a crested prolateral superior keel (Figs 13, 14) and by the presence of white stripes on legs. It differs from other species by having a long paraembolic apophysis.

Female (IBSP 10967): Total length, not including chelicerae or spinnerets, 16.50. Cephalothorax length 5.25, width 5.83. Anterior eye row slightly procurved, posterior row recurved. Eye sizes and interdistances: AME 0.18, ALE 0.33, PME 0.2, PLE 0.02; AME­ AME 0.20, AME­ALE 0.15, PME­PME 0.55, PME­PLE 0.03, ALE­PLE 0.13 AME­PME 0.10, ALE­ALE 0.83, PLE­PLE 0.88. Eye tubercle length 1.28, width 0.72; clypeus absent. Fovea straight, short and shallow. Labium length 1.18, width 0.90, with 47 cuspules, maxillae with approximately 100 cuspules on the inner corner. Sternum length 2.61, width 2.55. Sigilla: second pair more than one diameter from margin, third pair less than one diameter from margin and fourth pair one diameter from margin. Chelicerae with 8 teeth on promargin. Tarsi I–IV densely scopulate, scopulae of tarsi I–II divided by narrow band of setae, III–IV widely divided by setae. Metatarsi I–II densely scopulate along 1/3 of length, III scopulate on distal half and IV scopulate 1/4 distally. Length of legs and palpal segments in Table. 4. Spination: femurs I–IV and palp 0; patellae I–IV and palp 0; tibiae I 0, II 0, III v 0­0­2 (apical), p 0­1­0 and r 0­1­0; IV v 0­1­2 (apicals), and palp v 0­0­3 (apicals); metatarsi I v 0­0­1 (apical); II v 1 ­0­1 (apical); III v 1­1 ­3 (apicals), p 1­0­1; IV v 0­2­3 (apicals), p 0­0­1. Coxae I–IV without stridulatory hairs. Spermathecae with convex base narrowing abruptly into a spiral neck terminating in a caliciform seminal receptacle. Posterior lateral spinnerets with three articles, basal longer than median, both shorter than apical; lateral median spinnerets with one article. Urticating type III hair, with short barbs, on the central dorsum of the abdomen. Cephalothorax reddish brown with the cephalic region totally dark (Fig. 46); chelicerae grayish brown; labium and sternum light reddish brown; coxae and trochanters reddish brown; femurs black; patella, tibia, metatarsi and tarsi grayish brown; abdomen with four pairs of clear stripes with a central clear patch covering half of dorsal abdominal area; spinnerets grayish brown.

Male: Total length, not including chelicerae or spinnerets 13.83. Cephalothorax length 5.67, width 6.50. Anterior eye row procurved, posterior row slightly recurved. Eye sizes and interdistances: AME 0.28, ALE 0.28, PME 0.15, PLE 0.19; AME­AME 0.18, AME­ ALE 0.13, PME­PME 0.50, PME­PLE 0.03, ALE­PLE 0.08 AME­PME 0.13, ALE­ALE 0.68, PLE­PLE 0.55. Eye tubercle length 1.22, width 0.89; clypeus absent. Fovea straight, short and shallow. Labium length 0.93, width 0.63, with 40 cuspules, maxillae with approximately 100 cuspules on the inner corner. Sternum length 2.58, width 2.75. Sigilla: second pair hardly visible, third and fourth pair less than one diameter from margin. Chelicerae with 8 well developed teeth on promargin and a lateral row of 8 small teeth. Tarsi I– IV densely scopulate, tarsi III divided by a band of setae and IV widely divided by a band of setae. Metatarsi I densely scopulate along 4/5 of article, II scopulate 3/4, III scopulate on distal half and IV scopulate 1/5 distally. Length of legs and palpal segments in Table 5. Spination: femurs I p 0­0­1, II p 0­0­1 (apical), III p 0­0­1, r 0­0­2, IV r 0­0­1 and palp 0; patellae I­IV and palp 0; tibiae I v 1­1 ­1 (apical), p 0­1­0, r 1­1­0, II v 2­2 ­2 (apicals), p 1­ 1­0, III v 2­2 ­2 (apicals), p 1­1­0 and r 1­1­0; IV v 2­2 ­2 (apicals), p 1­1­0, r 0­1­1 and palp 0; metatarsi I v 0­0­1; II v 1 ­0­1 (apical); III v 3­1 ­1 (apical), p 1­1­1, r 0­1­1; IV v 2­2 ­3 (apicals), p 1­0­1, r 0­1­1. Coxae I–IV without stridulatory hairs. Posterior lateral spinnerets with three articles, basal longer than median, both shorter than apical; lateral median spinnerets with one article. Urticating type III hair, with short barbs, on the central dorsum of the abdomen. Color pattern as in female (Fig. 46), except for the whitish patellae, tibiae, metatarsi and tarsi of legs, whitish chelicerae and black palps.

Metatarsus 3.5 3.3 3.08 4.83 ­­­ Distribution: known only from type locality, Vale de São Lourenço and Vale de São Domingos, Pontes e Lacerda, U.H.E. Guaporé, State of Mato Grosso, Brazil.