Idiops argus Simon, 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 : 15-16

Idiops argus Simon, 1889

Figs 4B , 9

Idiops argus Simon, 1889: 180 , pl. 2 fig. 1.

Idiops fulvipes Simon, 1889: 181 . Syn. nov.

Idiops argus – Dupérré & Tapia 2021: 272 , fig. 14a–d.

Idiops fulvipes – Dupérré & Tapia 2021: 273 , fig. 15a–d.

Diagnosis

Females of Idiops argus differ from the other Neotropical species by having the spermathecae with a unique morphology within the genus, with a long and spiral duct followed by an oval receptacle ( Fig. 9 ).

Type material

Lectotype (here designated) VENEZUELA – Carabobo • ♀; Puerto Cabello, San Esteban ; 1889; E. Simon leg.; MNHN 4169 .

Paralectotypes VENEZUELA – Carabobo • 1 ♀, 2 juvs; same collection data as for lectotype; MNHN 4169a .

Holotype of I. fulvipes Simon, 1889

VENEZUELA – Miranda • juv.; La Silla de Caracas, Parque Nacional El Ávila ; 10°32′0″ N, 66°52′0″ W; 1889; MNHN .

Remark: The type specimen of Idiops fulvipes was examined and recognized as a juvenile of I. argus . Although the spermathecae were presented by Dupérré & Tapia (2021: fig. 15c–d), we detected that it is a pre-adult female of I. fulvipes .

Description

Male

Unknown.

Female (MNHN 4169)

MEASUREMENTS. TBL 13.7, CL 6.7, CW 5.6, LL 0.9, LW 1.2, SL 3.9, SW 3.5.

COLOR. Carapace, sternum and legs brownish. Abdomen ventrally brownish and dorsally gray.

PROSOMA. Eye tubercle: 1.9 long; 1.7 wide. AME-ALE distance 1.2. Eye diameters: AME 0.3, ALE 0.5, PME 0.3, PLE 0.4. Thoracic fovea procurved. Labium with six cuspules. Maxilla with 54 cuspules, distributed over anterior ventral half. Basal segment of chelicerae with a prolateral row of 8 large teeth and 6 retrolateral small teeth, grouped in basal half.

PALP AND LEG MEASUREMENTS. Palp = 11.4 (3.9, 2.4, 2.4, 2.4), I = 12.48 (4.04, 2.80, 2.64, 2.04, 0.96), II = 11.1 (3.68, 2.52, 2.16, 1.84, 0.92), III = 11.2 (3.2, 2.6, 1.8, 2, 1.6), IV = 15.9 (4.3, 3.1, 3.5, 3.2, 1.8).

SPINATION. Palp: Fe p0-0-1, Pa p0-0-1, r0-0-1, Ti p8-7-13, r7-7-12, Ta v0-0-3, p13-12-9, r13-8-9. Leg I: Ti p6-8-10, r6-7-15, Mt p12-10-7, r11-9-8, Ta v0-1-6, p4-4-2, r5-4-2. Leg II: Ti p3-5-8, r1-1-1, Mt p13- 11-6, r1-2-2, Ta v0-2-4, p5-4-3, r4-2-1. Leg III: Pa p6-7-12, r0-0-3, Ti v2-2-2, p2-3-6, r1-2-4, Mt v2-2-2, p5-3-2, r2-2-1, Ta v0-4-11. Leg IV: Pa p29-3-0, Ti v1-1-2, Ta v4-5-10.

SPERMATHECAE. Long spiral ducts and bean-shaped receptacula ( Fig 9 ).

Distribution

Venezuela. Carobobo and Miranda ( Fig. 4B ).

Figures

Fig. 4. Distribution of species of Idiops Perty, 1833 in the Neotropical region (part).

Fig. 9. Idiops argus Simon, 1889, ♀, genitalia, lectotype (MNHN 4169). A. Dorsal view. B. Frontal view. Scale bars = 1 mm.