Loxosceles cardosoi Bertani, von Schimonsky & Gallao

Bertani, Rogerio, Schimonsky, Diego M. von, Gallao, Jonas E. & Bichuette, Maria E., 2018, Four new troglophilic species of Loxosceles Heinecken & Lowe, 1832: contributions to the knowledge of recluse spiders from Brazilian caves (Araneae, Sicariidae), ZooKeys 806, pp. 47-72 : 47

Loxosceles cardosoi Bertani, von Schimonsky & Gallao sp. n. Figs 1, 42-47, 48, 49-54, 56, 57

Material examined.

Male holotype (MZUSP 74440) and female paratype (MZUSP 74441), 1 male, 4 females paratypes (MZUSP 74442), 2 males, 4 females paratypes (LES 14710), BRAZIL: Bahia, Carinhanha, Gruna da Altina cave (13°33'S, 43°45'W) 496 m a.s.l., M.E. Bichuette, N. Hattori and J.E. Gallão leg., 01.vi.2012.

Other material examined.

BRAZIL, Bahia: Carinhanha, Gruna da Altina Cave (13°33'S, 43°45'W) 496 m a.s.l., 10 immatures, M.E. Bichuette, N. Hattori and J.E. Gallão leg., 01.vi.2012 (LES 14711).

Diagnosis.

Males of Loxosceles cardosoi sp. n. resemble those of L. carinhanha sp. n. by having a group of macrosetae on the median prolateral area of femur I (Fig. 48). They can be distinguished from the males of L. carinhanha sp. n. by the slender embolus with a gentle curvature on its median area ending in a strong curvature on its apex (Figs 43-45) and the straight metatarsus I. Females of L. cardosoi sp. n. resemble those of L. carinhanha sp. n. by having spermathecae as a large, weakly sclerotized pouch with two large receptacles on its distal portion. Females of L. cardosoi sp. n. can be distinguished from those of L. carinhanha by the spermathecae having a sclerotized transverse plate, one dark sclerotized band reaching the basal area of each receptacle and dorsal and ventral parts of bursa copulatrix strongly sclerotized (Figs 51-54).

Description.

Male holotype: Total length 7.54. Carapace 3.70 long, 3.54 wide. Eye sizes and interdistances: ALE 0.23, PME 0.20, PLE 0.19, PME-PLE 0.02, PME-ALE 0.23; clypeus 0.30. Leg formula II, IV, III, I. Leg lengths: leg I: femur 7.39, patella 1.38, tibia 8.25, metatarsus 9.26, tarsus 1.77, total 28.05; II: 10.12, 1.43, 12.41, 13.65, 2.06, 39.67; III: 8.05, 1.36, 8.04, 9.82, 1.52, 28.79; IV: 8.67, 1.38, 9.04, 11.74, 2.03, 32.86. Palp: femur 2.10 long, 0.47 wide; patella 0.57 long, 0.51 wide; tibia 1.27 long, 0.67 wide; cymbium 0.72 long, 0.52 wide. Labium 0.89 long, 0.52 wide. Sternum 1.85 long, 1.82 wide. Femur I 2.0 times as long, tibia I 2.2 times as long, and leg I 7.6 as long as carapace. Palpal femur 4.5 times longer than wide, tibia 1.9 times longer than wide, cymbium oval (Figs 46, 47). Bulb suboval and approximately same size as cymbium. Embolus slender, with a gentle curvature to dorsal aspect on its middle and a strong curvature on apex, approximately two times longer than bulb length in retrolateral view, without carina (Figs 44, 45). Cephalic region of carapace, fovea and thoracic striae with long, greyish setae forming a pattern (Fig. 42). Carapace and chelicerae uniformly reddish (Fig. 42). Abdomen, legs and palp light brown, covered by short, greyish setae. Femur I dorsally brown on its base. Coxae and sternum light brown, labium and endites brown. Femur I prolateral median area with a series of macrosetae (Fig. 48).

Female paratype: Total length 9.15. Carapace 4.05 long, 3.49 wide. Eye sizes and interdistances: ALE 0.26, PME 0.24, PLE 0.22, PME-PLE 0.04, PME-ALE 0.36; clypeus 0.49. Leg formula II, IV, I, III. Leg lengths (left): leg I: femur 7.45, patella 1.42, tibia 8.24, metatarsus 8.30, tarsus 1.69, total 27.10; II: 8.87, 1.48, 9.87, 10.22, 1.80, 32.24; III: 7.30, 1.48, 7.00, 8.17, 1.48, 25.43; IV: 8.10, 1.48, 8.20, 9.91, 1.73, 29.42. Palp: femur 1.36 long, 0.31 wide; patella 0.36 long, 0.41 wide; tibia 1.18 long, 0.29 wide; tarsus 1.78 long, 0.22 wide. Labium 0.66 long, 0.64 wide. Sternum 2.13 long, 1.79 wide. Femur I 1.8 times as long, tibia I 2.0 times as long, and leg I 6.7 as long as carapace. Palpal femur 4.4 times longer than wide, tibia 4.0 longer than wide, tarsus not incrassate (Fig. 50). Spermathecae are a large weakly sclerotized pouch with two large receptacles on its distal portion, a broad transverse sclerotized plate, and one dark sclerotized band reaching the basal area of each receptacle. Dorsal and ventral parts of bursa copulatrix strongly sclerotized (Figs 51-54). Cephalic region of carapace, fovea, and thoracic striae with long, greyish setae (Fig. 49). Carapace light brown, cephalic area slightly darker (Fig. 49). Chelicerae brown. Abdomen and legs light brown, covered by short, greyish setae. Palp femur and patella light brown, tibia and tarsus reddish brown (Fig. 50). Coxae and sternum light brown; labium and endites brown.

Etymology.

The specific name is in honor of Dr. João Luiz Costa Cardoso, a physician who worked for several years at the Hospital Vital Brazil, Instituto Butantan, São Paulo, Brazil, treating bites and stings of venomous animals and publishing several related articles.

Remarks.

See remarks under L. carinhanha sp. n.