Titidius urucu Esmerio & Lise, 1996

Amanda, Naila, Salvatierra, Lidianne, Almeida, Marlus Queiroz & Morais, José Wellington De, 2018, Description of female of Titidius urucu Esmerio & Lise, 1996 (Araneae: Thomisidae), Zootaxa 4422 (2), pp. 284-286 : 284-286

Titidius urucu Esmerio & Lise, 1996 ( Figures 1−9 )

Titidius urucu Esmerio & Lise, 1996: 203 , figs 85–92 (holotype male from Rio Urucu , Coari, 4°05’S, 63°08’W, Amazonas, Brazil, 1992, M. E. E. S. Oliveira leg. (FUA), examined).

Material examined. BRAZIL: Roraima: 4 males, 4 females, Amajari, Reserva Biológica Ilha de Maracá , 02°49'12"N,

60°40'23"W, 18–22 July 1987, R. Gabriel ( INPA 2081 ). Amazonas: 1 male, Manaus, PDBFF- Projeto dinâmica

Biológica de Fragmentos Florestais , Colosso 10 ha, 02°24'34.89” S, 59°52'03.23” W Beat sheet, 20 December 2001 –20

March 2002. F. Rego & A. Cardoso ( INPA 2779 ); 1 male, 1 female, Presidente Figueiredo , Hidrelétrica de Balbina Ilha

Massaranduba, 1°47’04.6’’S, 59°41’08.9’’W, 5 August 2006, Beat sheet, Transect 3, R. Saturnino (INPA 1299).

Diagnosis. Females of Titidius urucu resemble those of Titidius rubescens in the absence of an atrium (see Esmério & Lise, 1996, figs 61̄62), but differ in the shape of epigynum and copulatory openings being barely visible in ventral view. Titidius urucu differs from all other Titidius species in the presence of a pair of round copulatory openings leading to well developed copulatory ducts, and spermathecae with two small round lobes ( Figs 8 ̄9).

Description. Male: Described by Esmério & Lise (1996: 203̄204, figs 85̄92).

Female (INPA 2801): Total length: 5.12. Carapace: 2.21 long, 1.99 wide. Opisthosoma: 3.15 long, 1.62 wide. Eyes. Interdistances: ALĒAME 0.17, PMĒPME 0.17, PLĒALE 0.25, AME-AME 0.17, PME-PLE 0.17, PME-PME 0.17, PLE-PLE 0.99, ALE-ALE 0.99. Median eyes smaller than lateral ones. Coloration (in alcohol). Carapace dark orange brown with white marks and darker lateral patches ( Figs 1 ̄3, 5). Dorsum of opisthosoma grey with brown markings and three white transversal lines ( Figs 1, 6 ). Pedipalp and legs yellowish brown ( Figs 1 ̄5). Leg spination. I: femur d11, v0; patella d2, v0; tibia d6, v6; metatarsus d5, v6; tarsus d2, v2; II: femur d 10, v6; patella d2, v2; tibia d8, v2; metatarsus d5, v7; tarsus without spines; III: femur d6, v6; patella d1, v2; tibia d6, v2; metatarsus d7, v4; tarsus d4, v2; IV: femur d5, v0; patella without spines; tibia d4, v2; metatarsus d6, v1 and tarsus d4, v2. Leg measurements. I: femur 2.14/ patella 1.01/ tibia 2.15/ metatarsus 1.52/ tarsus 0.90/ total 7.74; II: 2.21/ 0.98/ 2.19/ 1.71/ 0.88/ 7.98; III: 1.44/ 0.72/ 1.20/ 0.74/ 0.61/ 4.73; IV: 1.20/ 0.58/ 1.19/ 0.89/ 0.71/ 4.55. Epigynum ( Figs 8 ̄9). Copulatory openings barely visible. Copulatory ducts kidney-shaped. Copulatory ducts larger than spermathecae. Spermathecae spherical.

Distribution. Brazil: states of Roraima (Amajari) and Amazonas (Manaus).

Figures

FIGURES 1–9. Titidius urucu, female, Reserva Biológica Ilha de Maracá, Amajari, Roraima, Brazil. 1−2 habitus (1 dorsal, 2 ventral); 3−5 prosoma (3 dorsal, 4 ventral, 5 frontal); 6−7 opisthosoma (6 dorsal, 7 ventral); 8 epigynum, ventral; 9 vulva, dorsal. Abbreviations: (Co) copulatory openings, (DF) fertilization ducts, (Cd) copulatory ducts, (S) spermathecae, and (Sl) spermathecae lobes. Scale bars: 1−2, 2 mm; 3−7, 1 mm; 8−9, 0.7 mm.