Cyriocosmus

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: 14-17

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-FFB1-4345-5F35-FA034D2BFD03

treatment provided by

Plazi

scientific name

Cyriocosmus
status

 

Cyriocosmus  nogueira­netoi new species

Figs 11 –12View FIGURES 11 – 20, 28View FIGURES 24 – 33, 34View FIGURES 34 – 39, 45View FIGURES 45 – 50, 58View FIGURE 58. C

Holotype female, IBSPAbout IBSP 9193, from Rio Branco, Acre, Brazil, D. Pinz, November 1996. Paratype male, IBSPAbout IBSP 8899, from the same locality and collector.

Etymology: The specific name is a patronym in honor of Dr. Paulo Nogueira­Neto, a Brazilian researcher who plays an important role on creation and application of the environmental protection law and in nature conservation.

Diagnosis: The female differs from all other species in the genus by having the spermathecae with a sinuous neck ending in a rounded non­caliciform seminal receptacle ( Fig.View FIGURES 34 – 39

34). The male differs from that of C. fasciatus  , C. sellatus  , C. ritae  and C. blenginii  by the absence of a retrolateral field with spiniform hairs on the palpal tibia and from C. fernandoi  new species by the smooth prolateral superior keel ( Figs 11, 12View FIGURES 11 – 20), metatarsus I contacting the two branches of the tibial apophysis when folded, and by the origin of the paraembolic apophysis dorsally to the embolus. It can be distinguished from C. chicoi  by having the cephalothorax with a blackish area covering only the cephalic region, and the abdominal color pattern having the lighter central area invaginated forwards ( Fig. 45View FIGURES 45 – 50). It differs from other species by having a long paraembolic apophysis.

Female: Total length, not including chelicerae or spinnerets, 31.67. Cephalothorax length 11.67, width 10.33. Anterior eye row procurved, posterior row slightly recurved. Eye sizes and interdistances: AME 0.36, ALE 0.45, PME 0.29, PLE 0.35; AME­AME 0.24, AME­ALE 0.14, PME­PME 0.93, PME­PLE 0.07, ALE­PLE 0.15 AME­PME 0.13, ALE­ALE 1.12, PLE­PLE 1.32. Eye tubercle: length 1.33, width 1.86; clypeus absent. Fovea recurved, short and shallow. Labium length 1.67, width 2.08, with 88 cuspules, maxillae with approximately 100 cuspules on the inner corner. Sternum length 5.00, width 4.33. Sigilla: second pair one diameter and a half from margin, third and fourth pair one diameter from margin, all sigilla hardly visible. Chelicerae with 9 teeth on promargin, being 3 well developed and 6 smaller. Tarsi I–IV densely scopulate, scopulae of tarsi III divided by narrow band of setae, IV widely divided. Metatarsi I densely scopulate along 4 / 5 their length, II scopulate 2 / 3 their length, III scopulate on distal half and IV scopulate 1 / 4 their length. Length of legs and palpal segments in Table 2. Spination: femurs I–IV and palp 0; patellae I–IV and palp 0; tibiae I 0, II v 0­ 0­2 (apical), III v 0­ 0­2 (apical), p 0­ 0­1 and r 0­1 ­0; IV v 0­ 0­2 (apical), r 0­1 ­0 and palp v 0­ 0­3 (apical); metatarsi I v 1 ­ 0­1 (apical); II v 0­1 ­ 2 (apical); III v 1­2 ­ 3 (apical), p 1 ­ 1 ­ 1, r 0­ 0­1; IV v 9 (3 apicals), p 0­ 0­1, r 0­ 0­1. Coxae I–IV without stridulatory hairs. Spermathecae with convex base, narrowing abruptly into a sinuous neck ending in a rounded seminal receptacle. Posterior lateral spinnerets with three articles, the basal article longer than the median, which is longer than the 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 cephalic region almost totally dark, legs and palpi black except for reddish brown trochanters and coxae. Dorsal abdominal pattern with five pairs of lateral­radial clear stripes; the clear central region projects anteriorly ( Fig. 45View FIGURES 45 – 50).

Male: Total length, not including chelicerae or spinnerets, 15.33. Cephalothorax length 9.00, width 7.33. Anterior eye row slightly procurved, posterior row slightly recurved. Eye sizes and interdistances: AME 0.32, ALE 0.35, PME 0.24, PLE 0.28; AME­ AME 0.13, AME­ALE 0.09, PME­PME 0.61, PME­PLE 0.06, ALE­PLE 0.13 AME­PME 0.12, ALE­ALE 0.92, PLE­PLE 1.04. Eye tubercle length 1.04, width 1.4; clypeus absent. Fovea straight, short and shallow. Labium length 0.96, width 1.3, with 67 cuspules, maxillae with approximately 100 cuspules in the inner corner. Sternum length 3.3, width 2.8, with rounded, hardly visible sigilla, all pairs one diameter from margin. Chelicerae with 8 well developed teeth on promargin and a row of small teeth. Tarsi I–IV densely scopulate, tarsi III divided by a narrow band of setae, IV widely divided by setae. Metatarsi I densely scopulate on distal half, II–III scopulate less than a half and IV scopulate less than 1 / 3. Length of legs and palpal segments in Table 3. Spination: femurs I–IV p 0­ 0­1 and palp 0; patellae I­IV and palp 0; tibiae I v 1 ­ 1 ­ 1 (apical), p 1 ­ 1 ­0, II v 1 ­ 1 ­3 (apicals), p 1 ­ 1 ­0, III v 2 ­ 2 ­3 (apical), p 1 ­ 1 ­0 and r 1 ­ 1 ­ 1; IV 2­3 ­ 6 (3 apicals), p 1 ­ 1 ­ 1, r 1 ­ 1 ­ 1 and palp 0; metatarsi I v 0­ 0­1 (apical); II v 2 ­ 0­1 (apical), p 1 ­ 1 ­0; III v 2 ­ 2 ­3 (apicals), p 1 ­ 1 ­ 1, r 0­1 ­ 1; IV v 12 (2 apicals). Coxae I–IV without stridulatory hairs. Posterior lateral spinnerets with three articles, basal article longer than median, which is longer 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 cephalic region almost totally dark, femurs to tarsi dark brown and darker than coxae and trochanters. Abdomen with same pattern as female ( Fig. 45View FIGURES 45 – 50).

Distribution: known only from type locality, Rio Branco, State of Acre, Brazil ( Fig. 56View FIGURE 56).

TABLE 2. Cyriocosmus nogueira­netoi new species female holotype. Measurements of legs and palp.

  I II III IV Palp
Femur 8.5 7.2 6.7 8.8 6.0
Patella 5.1 4.7 4.0 4.7 3.7
Tibia 5.8 4.5 4.5 6.7 3.7
Metatarsus 4.5 4.5 5.3 7.5 ­­­
IBSP

Instituto Biologico de Sao Paulo