Antillorena gaia, Brescovit, Antonio Domingos & Ruiz, Gustavo Rodrigo Sanches, 2011

Brescovit, Antonio Domingos & Ruiz, Gustavo Rodrigo Sanches, 2011, Two new species of Antillorena Jocqué 1991 from northeastern Brazil (Araneae, Zodariidae), Zootaxa 2973, pp. 57-65 : 63-64

Antillorena gaia sp. nov.

Figs 11–16

Type material. Holotype: male from Gamboa, Ilha Tinharé (13º23’33,5”S, 38º56’07,5”W), Cairu, Bahia, Brazil, 21–25 Oct.2010, D. Polotow, J.P.P. Barbosa & R. Brandt col., deposited in IBSP 160901. Paratype: female with same data ( IBSP 160902).

Etymology. The specific epithet, to be treated as a Latin noun in apposition, is derived from the bastardization of “galha”, a word in Portuguese regionally used for “horn”, referring to the proximal tegular apophysis of the male palp.

Diagnosis. Males of Antillorena gaia sp. nov. can be distinguished the other species of the genus by the sinuous retrolateral tibial apophysis apex ( Fig. 14 ). The females can be distinguished by the narrow anterior portion of the median septum, which bears a pair of narrow and elongate pockets ( Fig. 15 ); and, internally, by the copulation ducts with four coils ( Fig. 16 ).

Description. Male (holotype). Total length 8.4. Prosoma 4.5 long, 2.9 wide. Carapace pear-shaped, brown, highest at the fovea region in profile, tegument smooth and shiny ( Fig. 11 ). Chelicerae orange-brown. Labium triangular, orange-brown. Endites orange, apices white. Sternum light brown, with median longitudinal yellow band, anteriorly truncated, posterior margin not projected between coxae IV. Legs with ventral face of coxae and femora yellowish green, other articles greenish brown. Abdomen oval with no spines, dark brown, with an anterior white square, four pairs of white spots and a white posterior median stain ( Fig. 11 ). Ventrally with the epigastric area orange and median posterior area with three white enlarged bands. Spinnerets orange-brown. Eye sizes and interdistances: AME=ALE<PME>PLE; AME 0.2, ALE 0.2, PME 0.18, PLE 0.22, AME-AME 0.04, AME-ALE 0.14, PME-PME 0.06, PME-PLE 0.06; ALE-PLE 0.04; MOQ: 0.4 anterior widths, 0.36 posterior widths, 0.42 long. Leg formula: 4123. Leg measurements: I: femur 2.9/ patella 1.4/ tibia 2.3/ metatarsus 2.0/ tarsus 1.2/ total 9.8; II: 2.4/ 1.2/ 1.7/ 1.8/ 1.0/ 8.1/ III: 2.1/ 1.0/ 1.2/ 2.0/ 1.0/ 7.3/ IV: 2.8/ 1.3/ 2.1/ 3.2/ 1.5/ 10.9. Leg spination: I: femur d0-0-1; tibia p0, r0, v0-0-1p; metatarsus p0, r0, v1 p-2-2; II: femur d0-0-1, tibia p0, r0, v0; metatarsus p0-0-1, r0, v0-1r-2; III: femur d1-1-1-0, patela p1-1-0, d0-0-1, r0-1-0, tibia d0-0-0-1, p1-1-1, r1-1-1, v2-2 -2; metatarsus p1-1-1-2, r1-1- 1-2, v2-2 -2; IV: femur d1-1-1-1, patela p1-1-0, d0-0-1, r0-1-0, tibia d1-1-1-1, p1-1-1, r0-1-1, v2-2 -2; metatarsus p1-1-1-2, r1-1-1-2, v2-2 -1p-2. Palp: retrolateral tibial apophysis long with sinuous tip. Cymbium with a small retrolatero-basal projection and a dorsal depression. Tegulum with proximal tegular apophysis curved and long, a ventral tegular apophysis, a long median apophysis with large base, covered by the tegulum and a distal fringe of thin projections; hyaline and voluminous apical conductor and S-shaped embolus arising from the proximal, retrolateral side ( Figs 13–14 ).

Female (Paratype IBSP 160902). Total length 10.6. Prosoma 5.3 long, 3.2 wide. Coloration as in male ( Fig. 12 ). Eye sizes and interdistances: AME=PLE>ALE>PME; AME 0.2, ALE 0.18, PME 0.16, PLE 0.2, AME-AME 0.04, AME-ALE 0.16, PME-PME 0.08, PME-PLE 0.06, ALE-PLE 0.04; MOQ: 0.46 anterior width, 0.42 posterior width, 0.48 long. Leg formula: 4123. Leg measurements: I: femur 3.0/ patella 1.4/ tibia 2.1/ metatarsus 1.8/ tarsus 1.1/ total 9.4; II: 2.5/ 1.3/ 1.8/ 1.7/ 1.0/ 8.3/ III: 2.2/ 1.1/ 1.4/ 2.1/ 1.0/ 7.8/ IV: 3.0/ 1.5/ 2.2/ 3.3/ 1.5/ 11.5. Leg spination as in male, except: leg I: tibia v0-0-2; metatarsus p0-0-1, v2-2 -2; II: tibia v1 r-1r-0; metatarsus p0-0-1, v2-2 -2; III: patela p1, r1; tibia d1-1-1, r0-1-1; metatarsus d0-1-1, p1-1-2, r1-1-2; IV: patela p1, r1; tibia d1-1-1, r1-1-1; metatarsus d1-1-1-, p1-1-2, r1-1-2, v2-2 -2. Epigynum with shallow lateral depressions; oval atrium; triangular median septum bearing two narrow, elongate pockets ( Fig. 15 ). Internally with copulatory ducts with four coils, basal and oval spermathecae and short fertilization duct at base of spermathecae ( Fig. 16 ).

Natural history. The specimens were collected with pitfall traps in the Atlantic Forrest of southern Bahia.

Distribution. Known only from the type locality in the state of Bahia, Brazil.

Figures

FIGURES 11 – 12. Antillorena gaia sp. nov. 11 male, dorsal view, holotype (IBSP 160901); 12 female, dorsal view, paratype (IBSP 160902).

FIGURES 13 – 16. Antillorena gaia sp. nov., holotype (IBSP 160901). 13 – 14 left male palp (13 ventral view, 14 retrolateral view); 15 – 16 Female, paratype (IBSP 160902). (15 epigyne, ventral view, 16 vulva, dorsal view). Abbreviations: MA: median apophysis; VTA: ventral tegular apophysis.