Cyriocosmus fernandoi , Fukushima, Caroline Sayuri, Bertani, Rogério & Jr, Pedro Ismael Da Silva, 2005

Fukushima, Caroline Sayuri, Bertani, Rogério & Jr, Pedro Ismael Da Silva, 2005, Revision of Cyriocosmus Simon, 1903, with notes on the genus Hapalopus Ausserer, 1875 (Araneae: Theraphosidae), Zootaxa 846, pp. 1-31: 17-19

publication ID

10.5281/zenodo.170714

publication LSID

lsid:zoobank.org:pub:D4FBCC80-E880-4ADF-87EB-36ECCF5F9C87

persistent identifier

http://treatment.plazi.org/id/03B7AB74-FFAC-4347-5F35-FB8C4893FAF1

treatment provided by

Plazi

scientific name

Cyriocosmus fernandoi
status

new species

Cyriocosmus fernandoi  new species

Figs 13 –14View FIGURES 11 – 20, 29View FIGURES 24 – 33, 35View FIGURES 34 – 39, 46View FIGURES 45 – 50, 59–60View FIGURE 59. CView FIGURE 60. C

Holotype male, IBSPAbout 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 IBSPAbout IBSP 10967, from Pontes & Lacerda, Mato Grosso, U.H.E. Guaporé, Area 1, I. Knysak & G. Puorto, 9 October 2002; 1 female, IBSPAbout IBSP 10975, from Vale de São Domingos, Mato Grosso, U.H.E. Guaporé, RGI 2525, C. Strussmann, 3 June 2002; 1 female, IBSPAbout 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, IBSPAbout IBSP 10973, 5 June 2002; IBSPAbout IBSP 10974, B 26, Area S1, 6 October 2002; IBSPAbout IBSP 10976, B 28, RGI 2306, 3 October 2002 and IBSPAbout IBSP 10977, B 28, 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. 46View FIGURES 45 – 50). 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, 14View FIGURES 11 – 20) and by the presence of white stripes on legs. It differs from other species by having a long paraembolic apophysis.

Female ( IBSPAbout 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 0­ 0­2 (apical), p 0­1 ­0 and r 0­1 ­0; IV v 0­1 ­ 2 (apicals), and palp v 0­ 0­3 (apicals); metatarsi I v 0­ 0­1 (apical); II v 1 ­ 0­1 (apical); III v 1 ­ 1 ­3 (apicals), p 1 ­ 0­1; IV v 0­2 ­ 3 (apicals), p 0­ 0­1. 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. 46View FIGURES 45 – 50); 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 0­ 0­1, II p 0­ 0­1 (apical), III p 0­ 0­1, r 0­ 0­2, IV r 0­ 0­1 and palp 0; patellae I­IV and palp 0; tibiae I v 1 ­ 1 ­ 1 (apical), p 0­1 ­0, r 1 ­ 1 ­0, II v 2 ­ 2 ­ 2 (apicals), p 1 ­ 1 ­0, III v 2 ­ 2 ­ 2 (apicals), p 1 ­ 1 ­0 and r 1 ­ 1 ­0; IV v 2 ­ 2 ­ 2 (apicals), p 1 ­ 1 ­0, r 0­1 ­ 1 and palp 0; metatarsi I v 0­ 0­1; II v 1 ­ 0­1 (apical); III v 3 ­ 1 ­ 1 (apical), p 1 ­ 1 ­ 1, r 0­1 ­ 1; IV v 2 ­ 2 ­3 (apicals), p 1 ­ 0­1, r 0­1 ­ 1. 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. 46View FIGURES 45 – 50), 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.

TABLE 5. Cyriocosmus fernandoi new species, male holotype. Measurements of legs and palp.

  I II III IV Palp
Femur 4.25 4.5 3.92 5.25 3.0
Patella 3.25 2.42 2.0 2.33 1.67
Tibia 3.5 3.0 2.58 4.25 2.17
IBSP

Instituto Biologico de Sao Paulo