Idiops rastratus (O. Pickard-Cambridge, 1889 )

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 : 54-58

publication ID

https://doi.org/ 10.5852/ejt.2021.780.1581

publication LSID

lsid:zoobank.org:pub:932663A6-D83D-49E0-B1F7-87F7DA8DC086

DOI

https://doi.org/10.5281/zenodo.5762245

persistent identifier

https://treatment.plazi.org/id/03B4126E-E858-FF96-EE49-FAC8FB5BFDF2

treatment provided by

Felipe

scientific name

Idiops rastratus (O. Pickard-Cambridge, 1889 )
status

 

Idiops rastratus (O. Pickard-Cambridge, 1889)  

Figs 4C View Fig , 6F View Fig , 29–30 View Fig View Fig

Dendricon rastratum O. Pickard-Cambridge, 1889: 250   , figs 1–5. Synonymized by Pocock 1895: 223.

Dendricon rastratum   – O. Pickard-Cambridge 1890: 623, pl. 53 fig. 2.

Pseudidiops rastratus   – Pocock 1895: 223. — Petrunkevitch 1911: 87.

Idiops rastratus   – Raven 1985: 139.

Diagnosis

The male of Idiops rastratus   resembles that of I. fuscus   by the shape of the palpal bulb, but differs by having the embolus curvature less accentuated ( Fig. 29D–F View Fig ) and the absence of a projection at the base of the retrolateral depression of the palpal tibia. The female differs from that of other species (except Idiops opifex   and I. duocordibus   sp. nov.) by the strong cuspules on the entire ventral face of the maxillae ( Fig. 29K View Fig ). Differs from I. opifex   by the aspect of the spermathecae, with a shorter duct and a slightly larger receptacle compared to the diameter of the duct ( Fig. 29L View Fig ). Differs from I. duocordibus   sp. nov. by the unmodified and rounded receptacle ( Fig. 29L View Fig ).

Type material

Syntypes BRAZIL – Rio de Janeiro • 4 ♀♀; Serra dos Órgãos ; W. Baker leg.; BMNH 1890.1.20.1 to 1890.1.20.4   .

Other material examined

BRAZIL – Bahia • 2 ♂♂; Feira de Santana, Serra de São José ; 12°16′1″S, 38°58′1″ W; 2009–2010; G. de Ferreira leg.; IBSP 258656 View Materials to 258657 View Materials GoogleMaps   1 ♀, 1 juv.; Porto Seguro, Arraial dʼAjuda ; 16°27.643′ S, 39°08.298′ W; 24–27 Feb. 2005; Expedição Arachné leg.; MNRJ GoogleMaps   18 ♂♂; Una ; 15°17′34″ S, 39°4′30″ W; Dec. 1999; K. Kato leg.; MZSP 24233 View Materials GoogleMaps   11 ♂♂; same collection data as for preceding; MZSP 24218 View Materials GoogleMaps   15 ♂♂, 2 ♀♀; same collection data as for preceding; MZSP 24214 View Materials GoogleMaps   13 ♂♂; same collection data as for preceding; MZSP 24216 View Materials GoogleMaps   7 ♂♂; same collection data as for preceding; MZSP 24219 View Materials GoogleMaps   7 ♂♂; same collection data as for preceding; MZSP 24221 View Materials GoogleMaps   10 ♂♂; same collection data as for preceding; MZSP 24292 View Materials GoogleMaps   7 ♂♂; same collection data as for preceding; MZSP 24211 View Materials GoogleMaps   2 ♂♂, 1 ♀; same collection data as for preceding; MZSP 24282 View Materials GoogleMaps   2 ♂♂; same collection data as for preceding; MZSP 24212 View Materials GoogleMaps   5 ♂♂, 1 ♀; same collection data as for preceding; MZSP 24210 View Materials GoogleMaps   6 ♂♂; same collection data as for preceding; MZSP 24284 View Materials GoogleMaps   3 ♂♂ (SEM); same collection data as for preceding; MZSP 24215 View Materials GoogleMaps   6 ♂♂; same collection data as for preceding; MZSP 24675 View Materials GoogleMaps   5 ♂♂; same collection data as for preceding; MZSP 24220 View Materials GoogleMaps   3 ♂♂; same collection data as for preceding; MZSP 24213 View Materials GoogleMaps   5 ♂♂; same collection data as for preceding; MZSP 24217 View Materials GoogleMaps   4 ♂♂; same collection data as for preceding; MZSP 24288 View Materials GoogleMaps   3 ♂♂; same collection data as for preceding; MZSP 24273 View Materials GoogleMaps   2 ♂♂; same collection data as for preceding; MZSP 24222 View Materials GoogleMaps   4 ♂♂; same collection data as for preceding; MZSP 24275 View Materials GoogleMaps   3 ♂♂; same collection data as for preceding; MZSP 24276 View Materials GoogleMaps   6 ♂♂; same collection data as for preceding; MZSP 24287 View Materials GoogleMaps   . – Minas Gerais • 1 ♂; Nova Lima, Serra da Moeda , Cave PBR_10_11 ; 20º09′20″ S, 43º58′24″ W; 15–20 Mar. 2010; R. Bessi leg.; IBSP 196034 View Materials GoogleMaps   . – Espírito Santo • 2 ♂♂; Linhares, Reserva Natural Vale ; 19°6′54″ S, 39°56′20″ W; 27–30 Apr. 2010; J.P.P.P. Barbosa et al. leg.; IBSP 234713 View Materials GoogleMaps   . – Rio de Janeiro • 1 ♀; Teresópolis, Parque Nacional da Serra dos Órgãos ; 23°27′33″ S, 46°38′2″ W; 10–22 Nov. 2010; R.P. Indicatti and F.U. Yamamoto leg.; IBSP 243973 View Materials GoogleMaps   . – São Paulo • 36 ♂♂; Bananal, Estação Biológica de Bananal ; 22°15′– 22°37′ S, 44°07′– 44°22′ W; 13–25 Apr. 2004; A.E. Monteiro leg.; MZSP 23781 View Materials GoogleMaps   39 ♂♂; same collection data as for preceding; MZSP 23732 View Materials GoogleMaps   1♀; Bananal, Estação Biológica de Bananal ; 2010; J.M. Pereira leg.; IBSP 245408 View Materials   .

Description

Male (MZSP 24282)

HABITUS. See Fig. 29A View Fig .

MEASUREMENTS. TBL 11.2, CL 5.5, CW 5.2, LL 0.7, LW 1, SL 3, SW 2.6.

COLOR. Carapace and legs reddish brown, with yellowish coxae, brownish sternum ( Fig. 29A–B View Fig ), abdomen dorsally dark gray and ventrally brownish.

PROSOMA. Carapace and ocular arrangement as shown in Fig. 29A View Fig . Eye tubercle: 1.3 long; 1.4 wide. Distance AME-ALE 0.5. Eye diameters:AME 0.5,ALE 0.3, PME 0.2, PLE 0.4. Thoracic fovea procurved ( Fig. 27A View Fig ). Labium and sternum without cuspules ( Fig. 29B View Fig ). Basal segment of chelicerae with a prolateral row of 5 large teeth and 4–5 small retrolateral teeth in basal third ( Fig. 30A View Fig ), with proeminent rastellum, with 7–8 spines, with larger ones in distal region ( Fig. 30B View Fig ).

LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 29G View Fig . Basal branch of tibial apophysis with additional tooth ( Fig. 30C View Fig ). Pseudoscopula: tarsus I smooth, II weakly covered, III–IV densely covered.

PALP. Tibia with conspicuous retrolateral depression and with larger spines concentrated on basal half ( Figs29C View Fig , 30D View Fig ); embolus with apical lamella with a differentiated dorsal and ventral border ( Figs 29D–F View Fig , 30E–F View Fig ).

PALP AND LEG MEASUREMENTS. Palp = 9 (3.2, 1.6, 3, 1.2), I = 20.7 (6.4, 3, 4.9, 4.4, 2), II = 16,5 (5.3, 2, 3.6, 3.8, 1.8), III = 15.13 (4.1, 2.1, 3, 3.9, 1.9), IV = 21.7 (6, 2.7, 5.3, 5.3, 2.4).

SPINATION. Palp: Ti r36, Ta d-0-0-4. Leg I: Ti v1r-1r-2r-1ap, Mt v35-3, Ta v45, p2-3-3, r4-3-1. Leg II: Ti v1r-1r-3r-2, Mt v4-6-5-3ap, p0-1-1, Ta p3-4-2, r3-3-4. Leg III: Pa p1-2-7, r0- 1-2, Ti v1-2-2-1ap, p1-1-1, r1-1-1, Mt v2-4-3-4, p0-0-2, r1-1-1, Ta p2-3-2, r3-4-2. Leg IV: Pa p6-1-0, Ti v1-1-4, Mt v1-1r-1-3, Ta p2-1-3, r0-1-2.

Female (BMNH 1890.1.20.1)

HABITUS. See Fig. 29J View Fig .

MEASUREMENTS. TBL 13, CL 5.8, CW 4.9, LL 0.8, LW 2, SL 3.5, SW 3.5.

COLOR. Carapace and legs reddish brown, with yellowish coxae, brownish sternum ( Fig. 29J–K View Fig ), abdomen dorsally dark gray and ventrally brownish.

PROSOMA. Carapace and ocular arrangement as shown in Fig. 29J View Fig . Eye tubercle: 1.7 long; 1.5 wide. Distance AME-ALE 0.9. Eye diameters:AME 0.5, ALE 0.4, PME 0.3, PLE 0.4. Thoracic fovea procurved ( Fig. 29J View Fig ). Labium with 14 cuspules. Maxilla with 113 cuspules, distributed throughout ventral region ( Fig. 29K View Fig ). Basal segment of chelicerae with a prolateral row of 5 large teeth and a retrolateral row with 9 small teeth, grouped in basal third, rastellum with 12–14 spines, distal ones longer.

PALP AND LEG MEASUREMENTS. Palp = 11.4 (3.9, 2.4, 2.7, 2.4), I = 12.7 (4.4, 2.7, 2.7, 1.9, 1), II = 10.8 (3.3, 2.5, 2.2, 1.8, 1), III = 11.4 (3.4, 2.4, 1.9, 2.3, 1.4), IV = 16.2 (4.8, 2.9, 3.6, 3.1, 1.8).

SPINATION. Palp: Ti r36, Ta d-0-0-4. Leg I: Ti v1r-1r-2r-1ap, Mt v35-3, Ta v45, p2-3-3, r4-3-1. Leg II: Ti v1r-1r-3r-2ap, Mt v4-6-5-3, p0-1-1, Ta p3-4-2, r3-3-4. Leg III: Pa p1-2-7, r0-1-2, Ti v1-2-2, p1-1-1, r1-1-1, Mt v2-4-3-4, p0-0-2, r1-1-1, Ta p2-3-2, r3-4-2. Leg IV: Pa p6-1-0, Ti v1-1-4, Mt v1-1r-1-3, Ta p2-1-3, r0-1-2

SPERMATHECAE. Base divided by non-sclerotized area. Ducts short and slightly narrower than receptacles, which are spherical and with evident granules ( Fig. 29L View Fig ).

Distribution

Brazil. Mainly distributed in Atlantic Forest phytophysiognomies along the coastal zone, with records for the Southeast region (east of São Paulo, Espírito Santo and Rio de Janeiro) and Northeast region (center-south of Bahia). Only one record for the central region of Minas Gerais ( Fig. 4C View Fig )

MNRJ

Brazil, Rio de Janeiro, Sao Cristovao, Universidade do Rio Janeiro, Museu Nacional

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Idiopidae

Genus

Idiops

Loc

Idiops rastratus (O. Pickard-Cambridge, 1889 )

Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori & Brescovit, Antonio Domingos 2021
2021
Loc

Idiops rastratus

Raven R. J. 1985: 139
1985
Loc

Pseudidiops rastratus

Petrunkevitch A. 1911: 87
Pocock R. I. 1895: 223
1895
Loc

Dendricon rastratum O. Pickard-Cambridge, 1889: 250

Pocock R. I. 1895: 223
Pickard-Cambridge 1890: 623
Pickard-Cambridge O. 1889: 250
1889