Published February 22, 2018 | Version v1
Taxonomic treatment Open

Epicadus caudatus

Description

Epicadus caudatus (Mello-Leitão, 1929)

Figs 15A–C

Tobias caudatus Mello-Leitão, 1929: 88, figs 187–188. Machado et al. 2015: 567, figs 1–11.

Epicadus caudatus (Mello-Leitão). Machado et al. 2017: 448, figs 3A, S2B, S5D, S6F, S9C, S10A, S15A.

Type material: Holotype (designated by Mello-Leitão 1929): female, Tijuca [22°57'31.38"S, 43°16'38.56"W, Rio de Janeiro, Brazil] (MNHN 26036, examined).

Other material examined. VENEZUELA: Aragua: 1 male, Rancho Grande (National Park, 1100m), 10°04'00"N, 67°32'36"W, 1960, J. Ojasti (MCZ). BRAZIL: Rio de Janeiro: 1 female, Rio de Janeiro (Tijuca), 22°55'57"S, 43°14'27"W, 1902, E.R. Wagner (MNHN 26016). Rio Grande do Sul: 1male, São Francisco de Paula (Potreiro Velho), 29°26'45"S, 50°34'50"W, 21–24 March 1996, A.A. Lise (MCTP 9855); 1 female, Novo Hamburgo, 29°41'16"S, 51°08'00"W, 17 June 1986, C.J. Becker (MCNZ 15170).

Diagnosis. Females of E. caudatus are very similar to those of E. pustulosus in the cryptic bark-dweller habitus with predominant dark-brown body coloration, squared leg segments and knobby femora, however, they can be distinguished at first sight by the presence of vivid orange/reddish blister-shaped setae sockets on the ventral surface of their anterior femora (Fig. 15C), while in females of E. pustulosus these structures are yellow (Fig. 15E). Females of E. caudatus also present a large median septum on the epigynal plate separating the exposed copulatory openings. Males can be recognized by the half-moon shaped stains on the dorsum of the opisthosoma, wide and stout opisthosomal projections and by the DTA pointing upwards.

Description. See Machado et al. (2015).

Distribution. BRAZIL: Rio Grande do Sul, Santa Catarina, Paraná, São Paulo, Rio de Janeiro, Bahia and Amazonas; VENEZUELA: Aragua; PUERTO RICO: Mora (Fig. 17A).

Notes

Published as part of Machado, Miguel, Teixeira, Renato Augusto & Lise, Arno Antonio, 2018, There and back again: More on the taxonomy of the crab spiders genus Epicadus (Thomisidae: Stephanopinae), pp. 501-530 in Zootaxa 4382 (3) on pages 507-508, DOI: 10.11646/zootaxa.4382.3.4, http://zenodo.org/record/1183130

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Linked records

Additional details

Biodiversity

Collection code
MCNZ , MCTP , MCZ , MNHN
Material sample ID
MCNZ 15170 , MCTP 9855 , MNHN 26016 , MNHN 26036
Event date
1986-06-17 , 1996-03-21
Verbatim event date
1986-06-17 , 1996-03-21/24
Scientific name authorship
Mello-Leitao
Kingdom
Animalia
Phylum
Arthropoda
Order
Araneae
Family
Thomisidae
Genus
Epicadus
Species
caudatus
Taxon rank
species
Type status
holotype
Taxonomic concept label
Epicadus caudatus (Mello-Leitao, 1929) sec. Machado, Teixeira & Lise, 2018

References

  • Mello-Leitao, C. F. (1929) Aphantochilidas e Thomisidas do Brasil. Archivos do Museu Nacional do Rio de Janeiro, Rio de Janeiro, 360 pp.
  • Machado, M., Teixeira, R. A. & Lise, A. A. (2015) Taxonomic notes on the crab spider genus Tobias Simon, 1895 (Araneae, Thomisidae, Stephanopinae). Zootaxa, 4034 (3), 565 - 576. https: // doi. org / 10.11646 / zootaxa. 4034.3.8
  • Machado, M, Teixeira, R. A. & Lise, A. A. (2017) Cladistic analysis supports the monophyly of the Neotropical crab spider genus Epicadus and its senior synonymy over Tobias (Araneae: Thomisidae). Invertebrate Systematics, 31, 442 - 455. https: // doi. org / 10.1071 / IS 16074