Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017

Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori & Brescovit, Antonio Domingos, 2021, Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species, European Journal of Taxonomy 780 (1), pp. 1-71 : 24-26

Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017

Figs 3B , 6D–E , 13–14

Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017: 191 , figs 29–38.

Emended diagnosis

The male of Idiops carajas ( Figs 13A–I , 14 ) differs from the other Neotropical species, except I. petiti , by the palpal tibia having spines concentrated on the basal half of the retrolateral depression ( Figs 13C , 14D ), apophysis with a narrow rectangular apical branch ( Figs 13G–H , 14C ) and by the presence of a lateral lamella that extends along the median portion of the embolus ( Figs 13E–F ). Differs from I. petiti by having the subapical portion of the embolus thickened in dorsal view ( Fig. 13D ) and the arrow-shaped apical end in retrolateral view ( Figs 13E–F , 14E ). Females ( Fig. 13J–L ) are distinguished from congeners, except I. petiti , by having the spermathecae with a sclerotized trapezoidal base. Differs from I. petiti by the ducts having a thickened basal half and shorter apical half and by the rounded receptacles, separated from the ducts by a strong constriction ( Fig. 13L ).

Type material

Holotype BRAZIL – Pará • ♂; Parauapebas, FLONA Carajás Serra Norte , cave GEM-1758 ; 5°52′0.00″ S, 49°52′60.00″ W; 23 Nov. 2010; R.A. Zampaulo leg.; IBSP 166619 .

Paratype BRAZIL – Pará • 1 ♀; same collection data as for holotype; IBSP 166620 .

Other material examined

BRAZIL – Amazonas • 1 ♂; Benjamin Constant ; 4°22′58″ S, 70°1′51″ W; 2014; P.S. Pompeu et al. leg.; IBSP 243963 . – Pará • 1 ♂ (SEM); Paraoapebas, Serra Norte , Serra de Carajás ; 5°52′ S, 49°53′ W; 29 Mar.–6 Apr. 1989; N. Degallier leg.; MPEG 0109 • 1 ♂; Flona Carajás , Cave N3-033 ; 6°6′34.92″ S, 50°11′40.11″ W; 5–17 Mar. 2013; Equipe Carste leg.; IBSP 174029 • 1 ♂; Melgaço, Igarapé do Laranjal ; 1°48′21.44″ S, 50°43′0″ W; 7 Apr. 1998; J.A.R. Bernardi and R.A.J. Rocha leg.; MPEG 0111 • 1 ♂; Almeirim, Rio Jari ; 00°41′25.93″ S, 52°49′9.21″ W; 17–23 Aug. 2004; T. Gardner leg.; MPEG 7592 • 1 ♂; Almeirim, Rio Jari ; 3 Apr. 2005; T. Gardner leg.; MPEG 7589 • 1 ♂; Almeirim, Rio Jari ; 2004; T.C.S. Avila Pires leg.; MPEG 7591 • 2 ♂♂; Almeirim, Rio Jari ; 22 Mar. 2005; T. Gardner & M.A. Ribeiro Junior leg.; MPEG 7587 , MPEG 7590 • 1 ♂; Tucuruí , Base IV ; 3°46′4″ S, 49°40′22″ W; 8–22 Feb. 1980; T. Gardner leg.; MPEG 0115 . – Mato Grosso • 1 ♂; Chapada dos Guimarães ; 15°27′39″ S, 55°45′0″ W; 18 Jun. 2000; C. Strussmann leg.; MCTP 11192 • 1 ♂; Porto Estrela ; 15°19′26″S, 57°13′40″ W; 5 May 2019; J.R. Lema, D. Castro and M. Pessoa-Silva leg.; IBSP249141 . – Mato Grosso do Sul • 1 ♂; Corumbá, Morro Santa Cruz ; 19°12′07.6″ S, 57°36′09.9″ W; Jun. 2003; V.L. Ferreira leg.; MCTP 17591 . – Tocantins • 1 ♂; Ananás ; 6°13′34.70″ S, 48°25′2.39″ W; 21 Apr. 2009; W.U. Oliveira and M.D. Miranda leg.; UFMG 5749 .

Emended description

Male and female recently described by Fonseca-Ferreira et al. (2017). New data on the male and female are included.

Male (holotype IBSP 166619) PROSOMA. Basal segment of chelicerae with a prolateral row of 9 teeth, 6 large and 3 small, and 5 small retrolateral teeth ( Fig. 14A ); salient rastellum, presenting 12–13 short, thick spines with larger distal ends ( Fig. 14B ).

Female (paratype IBSP 166620)

PROSOMA. Basal segment of chelicerae with a prolateral row of 9 large teeth and 5 small retrolateral teeth; robust rastellum, presenting approximately 25 short and thick spines on a tubercle.

Distribution

Brazil. Distributed in the phytophysiognomies of Amazon and Cerrado, with records from the west of Central-west region (Mato Grosso, Mato Grosso do Sul) and from the North region (Amazonas, Pará and Tocantins) ( Fig. 3B ).

Figures

Fig. 3. Distribution of species of Idiops Perty, 1833 in the Neotropical region (part).

Fig. 6. Diagnostic characters of Idiops Perty, 1833 spp. A. Ocular disposition, with emphasis on the anterior lateral eyes apart from the others (I. fuscus Perty, 1833, CHNUFPI 0036). B. Rows of chelicera teeth (I. clarus(Mello-Leitão, 1946), FCE 0340). C. Rastellum (I. carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017, MPEG 00109). D. Tarsus showing the pseudoscopula and tarsal claws (I. camelus (Mello-Leitão, 1937), MZSP 28832).E. Palpal bulb (I. carajas). F. Retrolateral depression of palpal bulb (I. rastratus (O. Pickard-Cambridge, 1889), MZSP 24215). G. Tibial apophysis (I. pirassununguensis Fukami & Lucas, 2005, MZSP 15651). H–I. Putative slit organ between the branches of the tibial apophysis (I. camelus). Abbreviations: PT = promarginal teeth; RT = retromarginal teeth. Scale bars: A–D, F– G = 0.5 mm; E = 1 mm; H–I = 0.05 mm.

Fig. 13. Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017. A–I. ♂, holotype (IBSP 166619). A. Prosoma (dorsal view). B. Prosoma (ventral view). C. Part of palp (retrolateral view). D–F. Palpal bulb. D. Dorsal view. E. Retrolateral view. F. Prolateral view. G. Tibia, metatarsus and tarsus I (prolateral view). H. Tibial apophysis (prolateral view). I. Tibial apophysis and metatarsus I (dorsal view). J–L. ♀, paratype (IBSP 166620). J. Prosoma (dorsal view). K. Prosoma (ventral view). L. Genitalia (dorsal view). Abbreviation: EL = embolar lamella. Scale bars = 1 mm.

Fig. 14. Scanning electron micrographs of Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017, ♂ (MPEG 0109). A. Chelicera (retrolateral view). B. Rastellum (retrolateral view). C. Tibial apophysis (dorsal view). D. Part of the palp, showing retrolateral depression. E–F. Detail of the final portion of the embolus. E. Retrolateral view. F. Prolateral view. Abbreviation: EL = embolar lamella. Scale bars = 0.5 mm.