Paracymbiomma, Rodrigues, Cizauskas & Rheims, 2018

Cizauskas, Igor, Brescovit, Antonio D., Rodrigues, Bruno V. B. & Rheims, Cristina A., 2024, Description of the female of P. pauferrense Rodrigues, Cizauskas & Rheims, 2018 and three new species of Paracymbiomma Rodrigues, Cizauskas & Rheims, 2018 (Araneae: Prodidomidae) from Brazil, Zootaxa 5474 (3), pp. 271-291 : 281-282

Paracymbiomma una sp. nov.

Figs 36–45 , 66A

Type material. Holotype: BRAZIL, Bahia: 1♂, Una, Reserva Biológica do Una [15º10’S; 39º03’W], 2012, D. Uzel leg. ( IBSP 225634 ) . Paratype: 1♀, same data as holotype ( IBSP 225601 ) .

Etymology. The specific name refers to the type locality; noun in apposition.

Diagnosis. Paracymbiomma una sp. nov. resembles P. angelim , P. bocaina , P. doisirmaos and P. pepita sp. nov. in having six eyes. Males resemble those of P. angelim and P. doisirmaos by the palps with circular tegulum (ovoid in the other species). They differ from both species by the palpal tibia with a median retrolateral apophysis in addition to the RTA ( Figs 39 , 43 ). Females resemble those of P. bocaina by the epigynum with a circular atrium (triangular in P. pepita sp. nov. and with a hood in P. angelim ). They differ from thos e of P. bocaina by the A with anterior margin no sclerotized ( Figs 40 , 44 ) and vulva with SS postero-medial ( Figs 41 , 45 ) (atrium with anterior and lateral margins sclerotized, vulva with SS antero-medial in P. bocaina ).

Description. Male (holotype): Carapace and legs pale yellow, and abdomen pigmented ( Fig. 36 ). Total length: 1.6. Carapace 0.79 long, 0.64 wide; Abdomen 0.8 long, 0.56 wide; Sternum 0.5 long, 0.42 wide; ALS 0.14 long, 0.07 wide. Six eyes arranged in two triads. AME absent. Eye diameters and interdistances: ALE 0.062; PLE 0.045; PME 0.045; ALE–ALE 0.037; PLE–ALE 0.016; PME–ALE 0.024; PME–PLE 0.016; PME–PME 0.041. Chelicerae 0.23 long; 6 retromarginal teeth and 4 promarginal teeth. Leg formula 4123. Leg measurements: I: 2.04 (0.59, 0.33, 0.5, 0.33, 0.30); II: 1.88 (0.5, 0.33, 0.41, 0.34, 0.3); III: 1.7 (0.5, 0.28, 0.33, 0.31, 0.29); IV: 2.51 (0.7, 0.31, 0.63, 0.5, 0.38). Leg spination: I—femur d1-1-0; tibia v2-2-0; metatarsus v0-2-0. II—femur d1-1-0; tibia v1p-1p; metatarsus v0-2-0. III—femur d1-1-0; p0-0-1, r0-0-1, v1p-1p-2; metatarsus p0-0-1, r0-0-1; v0-2-1. IV—femur d1-1-1p; tibia d1-1-0, p0-1-1, r0-1-1, v1p-1p-2; metatarsus d0-2-0, p0-0-1, r0-2-0, v0-1p-2. Palp: femur with one dorsal spine; RTA triangular, one and a half times longer than wide, acuminate; E arising from tegulum at 12 o’clock position; C sinuous and long, arising from tegulum adjacent to E base; MA truncated, four times longer than wide ( Figs 38–39 , 42–43 ).

Female (paratype): Carapace and legs pale yellow, and abdomen pigmented ( Fig. 37 ). Total length: 1.88. Carapace 0.83 long, 0.75 wide; Abdomen 0.95 long, 0.68 wide; Sternum 0.57 long, 0.47 wide; ALS 0.12 long, 0.07 wide. Six eyes arranged in two triads. AME absent ( Fig. 38 ). Eye diameters and interdistances: ALE 0.062; PLE 0.041; PME 0.045; ALE–ALE 0.05; PLE–ALE 0.025; PME–ALE 0.025; PME–PLE 0.02; PME–PME 0.054. Chelicerae 0.32 long; apparently with 6 retromarginal teeth and 3 promarginal teeth. Leg formula 4123. Leg measurements: I: 2.1 (0.59, 0.38, 0.46, 0.36, 0.31; II: 2.04 (0.6, 0.38, 0.43, 0.31, 0.33); II: 1.85 (0.53, 0.31, 0.35, 0.35, 0.31); IV: 2.54 (0.69, 0.36, 0.58, 0.54, 0.38). Leg spination: I—femur d1-1-0; tibia v2-2-0; metatarsus v0-2-0. II—femur d1-1-0; tibia v1r-1r-0; metatarsus v0-2-0. III—femur d1-1-0; tibia v1p-1p-2, p0-0-1, r0-0-1; metatarsus v0-2-1, p0-0-1, r0-0-1. IV—femur d1-1-0; tibia d1-1-0, p0-1-1, r0-1-1, v1p-1p-2; metatarsus p0-1-0, r0-1-0, v0-2- 1. Epigynum: EF as wide as long; A circular with lateral margins sclerotized ( Figs 40 , 44 ). Vulva with hyaline first loop reaching half of sclerotized part of CD; PS roughly kidney-shaped; SS with well-defined, rounded distal part; FD antero-medial ( Figs 41 , 45 ).

Distribution. Only known from the type locality in northeastern Brazil ( Fig. 66A ).

Figures

FIGURE 66. Map showing collection records for the known species of Paracymbiomma Rodrigues, Cizauskas & Rheims, 2018. A—Brazil, epigean species; B—Subterranean species.

FIGURES 36–41. Paracymbiomma una sp. nov. 36, 38–39 Male (IBSP 225634); 37, 40–41 (IBSP 225601) 36–37 habitus, dorsal; 39–40 felt palp (39 ventral, 40 retrolateral); 40–41 genitalia (40 epigynum, ventral, 41 vulva, dorsal). A—atrium; C— conductor; E—embolus; FD–fertilization duct; MA—median apophysis; Pcb—paracymbium; PS—primary spermathecae; RTA—retrolateral tibial apophysis; SS—secondary spermathecae. Scale lines: 36–37: 0.5 mm; 38–41: 0.2 mm.

FIGURES 42–45. Paracymbiomma una sp. nov. 42–43 Male (IBSP 225634), left palp (42 ventral, 43 retrolateral); 44–45 Female (IBSP 225601), genitalia (44 epigynum, ventral, 45 vulva dorsal). A—atrium; C—conductor; E—embolus; FD—fertilization duct; MA—median apophysis; Pcb—paracymbium; PS—primary spermathecae; RTA—retrolateral tibial apophysis; SS— secondary spermathecae. Scale lines: 0.2 mm.