Idiops clarus ( Mello-Leitão, 1946 )

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 : 27-30

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.5762233
persistent identifier	https://treatment.plazi.org/id/03B4126E-E877-FFB2-EE01-FEE2FDC0FC6F
treatment provided by	Felipe
scientific name	Idiops clarus ( Mello-Leitão, 1946 )
status

Treatment

Idiops clarus ( Mello-Leitão, 1946) View in CoL

Figs 3C View Fig , 6B View Fig , 15–16 View Fig View Fig

Juambeltzia clara Mello-Leitão, 1946: 6 , figs 6–9.

Juambeltzia clara – Bücherl 1957: 383, figs 3–3a.

Idiops clarus View in CoL – Schiapelli & Gerschman de Pikelin 1971: 58, figs 1–7. — Ferretti et al. 2017: 977 View Cited Treatment , figs 1a–f, 2a–c, 3d.

Emended diagnosis

Males ( Fig. 15A–H View Fig ) and females ( Fig. 15I–K View Fig ) of Idiops clarus differ from the other Neotropical species by having the posterior lateral eyes separated from the median eye group ( Fig. 15A, I View Fig ) and by the rounded sternum ( Fig. 15B View Fig ). Males also differ from others by having the palpal tibia short and thick, with a projection at the base of the retrolateral depression (also present in I. fuscus and I. pirassunsunguensis ) ( Fig. 15C View Fig ) and by the presence of a distal embolar tooth close to the opening of the sperm duct (also present in I. germaini ) ( Fig. 16E View Fig ). Females differ by the aspect of the spermathecae with the extensive basal area divided by a non-sclerotized portion and by ducts distant from each other and a sclerotized area in the transition between duct and receptacle ( Fig. 15K View Fig ).

Type material

Holotype URUGUAY – Florida • ♂; San Gabriel ; A. Juambeltz leg.; MHNM. The type specimen was not found in the MHNM, probably lost.

Other material examined

URUGUAY – Rivera • 1 ♂ (SEM); Rivera, Near Vichadero ; 31°48′ S, 54°43′ W; 23 Nov. 1959; C.C., P.S.M. and A.M. leg.; FCE 0340 . GoogleMaps – Cerro Largo • 1 ♂; Arroyo Chui del Tacuarí ; 32°32′42″ S, 54°2′45″ W; 15 Nov. 1972; A.S.P., C.C., L.Z.C. and N.E.L. leg.; MNHN 295 About MNHN . GoogleMaps – Río Negro • 1 ♂; Tres Arboles ; 32°26′ S, 56°42′ W; 1 Apr. 2009; Stora Enso/Trampa PC; FCE 1075 GoogleMaps • 1 ♂; Tres Arboles ; 1 Apr. 2009; Stora Enso/Trampa PB 2; FCE 1085 • 2 ♂♂; Tres Arboles ; 1 Mar. 2009; Stora Enso/Trampa PC; FCE 1115 • 1 ♂; Tres Arboles ; 1 Feb. 2009; Stora Enso/Trampa PB 4; FCE 1118 • 2 ♂♂; Tres Arboles ; 1 Mar. 2009; Stora Enso/Trampa ECD; FCE 1152 • 1 ♂; Tres Arboles ; 1 Mar. 2009; Stora Enso/Trampa PB; FCE 1161 • 4 ♂♂; 1 Jan. 2009; Stora Enso/Trampa MB and EC; FCE 1171 . – Treinta y Tres • 1 ♂; Santa Clara de Olimar ; 32°55′ S, 54°58′ W; 12 Jan. 1960; L.C. Zolessi and A. Spiritoso leg.; FCE 0337 . – GoogleMaps Lavalleja • 1 ♀, 1 juv.; Aguas Blancas ; 34°32′ S, 55°24′ W; 9 Nov. 1958; FCE 0339 . – GoogleMaps Canelones • 1 ♂; Ruta 11 Km 144 ; 34°35′09″ S, 55°50′23″ W; 26 Jun. 2010; F. Costa and F. Pérez-Miles leg.; FCE 1015 GoogleMaps • 1 ♂; Piedras de Afilar ; 34°45′33″ S, 55°31′32″ W; 19–26 Apr. 2010; M. González leg.; trampa pitfall; FCE 1021 . – GoogleMaps Maldonado • 1 ♀; Sierra de las Animas ; 34°42′ S, 55°19′ W; 23 Feb. 1969; L.C. Zolessi leg.; FCE 0335 GoogleMaps • 1 juv.; Sierra de las Animas ; 21 Mar. 1971; FCE 0336 • 1 ♀; Sierra de las Animas ; 34º42′ S, 55º19′ W; 21 Mar 1971; FCE 0338 GoogleMaps • 2 ♀♀, 2 juvs; Sierra de las Animas ; 2 Nov. 1969; L.C. Zolessi leg.; FCE 0342 • 1 ♀; Sierra de las Animas ; 11 Feb. 1970; L.C. de Zolessi leg.; MNHN 373 About MNHN • 1 ♂; Sierra de las Animas ; 21 Mar. 1971; S. Etcheverrigaray leg.; MNHN 718 About MNHN . – Montevideo • 1 ♂; Prado, Liceo Bauzá ; 34°51′ S, 56°12′ W; 19 Apr. 2002; A. Mignone leg.; FCE 0341 GoogleMaps .

The specimens registered for Argentina and reviewed by Ferretti et al. 2017 were not examined here. Despite this, they were included in the species distribution map.

Description

Male (FCE 0341)

HABITUS. See Fig. 15A View Fig .

MEASUREMENTS. TBL 11, CL 5.7, CW 4.8, LL 0.6, LW 1.2, SL 3, SW 2.9.

COLOR. Carapace, legs and sternum light brown ( Fig. 15A–B View Fig ), abdomen gray.

PROSOMA. Carapace and ocular arrangement as shown in Fig. 15A View Fig . Eye tubercle: 1.4 long; 1.6 wide. Distance AME-ALE 0.8. Eye diameters:AME 0.3, ALE 0.4, PME 0.3, PLE 0.3. Thoracic fovea procurved. Labium and sternum without cuspules ( Fig. 15B View Fig ). Basal segment of chelicerae with a prolateral row of 5 large teeth and retrolateral row with 9 small teeth ( Fig 15A View Fig ), rastellum with 8 spines, distal spines are longer ( Fig. 16B View Fig ).

LEGS. Tibia and metatarsus I as shown in Fig. 15H View Fig . Leg I with an apical branch of tibial apophysis with a short and triangular basal spine, and an apical branch with a conical spine twice the size of basal spine. Pseudoscopula: tarsus I divided into rows of thick hair; tarsus II–IV totally covered.

PALP. Tibia with conspicuous retrolateral depression, with projection on basal portion and larger spines concentrated on basal and apical portions ( Figs 15G View Fig , 16C View Fig ); embolus with subapical torsion and presence of a small embolar tooth close to spermatic duct opening ( Figs 15D–F View Fig , 16E–F View Fig ).

PALP AND LEG MEASUREMENTS. Palp = 9.3 (3, 1.6, 3.1, 1.6), I = 21.3 (5.9, 3.2, 4.3, 5, 2.9), II = 19.7 (5, 2.5, 3.4, 4.2, 2.6), III = 14. 9 (3.5, 2.3, 2.3, 4, 2.8), IV = 21.2 (5.4, 2.9, 4.5, 5.4, 3).

SPINATION. Palp: Ti r24, Ta d0-0-4. Leg I: Fe d1-1-2, Ti v1r-1r-2r, Mt 1r-2r-1ap, Ta r2-1-0. Leg II: Fe d1-1-2, Ti v0-2r-1r-1, Mt v1r-1r-1r-2, Ta p0-0-1, r2-2-0. Leg III: Fe d1-1-1, Pa d1-1-0, p3-5-8, r0-0-2, Ti v0-1r-0-2, p1-1-4, r1-1-2, Mt v3-4-0-4, p3- 2-2, r0-1-2, Ta p0-4-8, r0-4-8. Leg IV: Fe d1-1-2, Pa p16-3-0, Ti v1-2-2, Mt v1-2 -1-3, Ta p2-3-6, r0-0-2.

Female (FCE 0338)

HABITUS. See Fig. 15I View Fig .

MEASUREMENTS. TBL 17.3, CL 7.5, CW 6.3, LL 1.2, LW 1.6, SL 4.4, SW 4.3.

COLOR. Carapace, legs and sternum light brown ( Fig. 15I–J View Fig ), abdomen gray.

PROSOMA. Carapace and ocular arrangement as shown in Fig. 15I View Fig . Eye tubercle: 2.2 long; 2.7 wide. Distance AME-ALE 1. Eye diameters:AME 0.4,ALE 0.6, PME 0.5, PLE 0.7. Thoracic fovea procurved. Labium with 4–6 cuspules ( Fig. 15J View Fig ). Maxilla with 83 cuspules, distributed over the anterior ventral half ( Fig. 15J View Fig ). Basal segment of chelicerae with a prolateral row of 5 large teeth and a retrolateral row with 7 small teeth, grouped at basal half.

PALP AND LEG MEASUREMENTS. Palp = 12.2 (4.1, 2.6, 2.7, 2.8), I = 13.3 (4.2, 3, 2.9, 2.2, 1), II = 11.1 (3.4, 2.7, 2.3, 2, 1), III = 12 (3.3, 2.6, 1.7, 2.4, 2), IV = 15.8 (4.1, 3.4, 3.3, 3.2, 1.8).

SPINATION. Palp: Fe p0-0-2, Pa p0-0-1, Ti p7-8-11, r3-10-13, Ta v0-0-6, p12-10-8, r12-10-12. Leg I: Ti p5-5-8, r6-8-12, Mt p11-8-10, r9-8-7, Ta v0-6-7, p4-5-2, r5-4-3. Leg II: Ti p2-7-6, r2-4-1, Mt p10-9-7, r4-5-3, Ta v0-1-7, p4-5-3, r4-2-1. Leg III: Pa p5-5-16, r0-0-2, Ti p5-7-10, r3-7-10, Mt v0-0-2, p12-7-6, r7-5-4, Ta v0-6-22. Leg IV: Pa p30-5-0, Ti v0-1-1-2, Mt v0-2-5-3, Ta v1-9-14.

SPERMATHECAE. Duct with basal portion shorter than apical portion and non-sclerotized spherical receptacles with evident granules ( Fig. 15K View Fig ).

Distribution

Uruguay and Argentina ( Fig. 3C View Fig ).