Strotarchus praedator ( O. Pickard-Cambridge, 1898 )

Bonaldo, Alexandre B., Saturnino, Regiane, Ramírez, Martín J. & Brescovit, Antonio D., 2012, A revision of the American spider genus Strotarchus Simon, 1888 (Araneae: Dionycha, Systariinae), Zootaxa 3363, pp. 1-37 : 16-17

Strotarchus praedator ( O. Pickard-Cambridge, 1898)

Figs. 73−74

Bedriacum praedator O. Pickard-Cambridge, 1898: 251 , pl. 33, fig. 7. Male holotype from Orizaba [97º6.0'W, 18º51.0'N, State of Veracruz], Mexico, Gas. coll., deposited in BMNH, examined.

Strotarchus praedator ; F.O. Pickard-Cambridge, 1899: 87, pl. 6, fig. 17.

Diagnosis. Males of Strotarchus praedator resemble those of S. monasticus n. sp. by the well developed embolar process. Differ by the longer embolar apices and by the embolar process presenting a bifurcated apical projection ( Figs. 73, 74 ).

Description. Male (holotype BMNH). Carapace red brown, cephalic area orange. Chelicerae, labium and endites brownish. Sternum yellow with brown margins. Legs yellow. Abdomen pale brown. Total length 9.00. Carapace 4.00 long, 3.20 wide. Eye diameters: AME 0.28, ALE 0.24, PME 0.23, PLE 0.20. Chelicerae with 4 promarginal teeth and 3 retromarginal denticles. Leg measurements: femur I 4.80/ II 4.65/ III 3.80/ IV 4.60. Leg spination: I—femur d1-1-1-1-0, p0-1-1-1, r0-1-1-0; tibia d0, p1-1-0, r1-1-0, v2-2 -2; metatarsus d0, p1-1-1, r1-1-1, v2-2 -2. II—femur d1-1-1, p0-1-1-1, r0-1-1-1; tibia d0, p1-1-0, r1-1-0, v2-2 -2; metatarsus d0, p1-1-1, r1-1-1, v2-2 -2. IIIfemur d1-1-1, p0-1-1-1, r0-1-1; tibia d0-1-0, p1-1-0, r1-1-0, v2-2 -2; metatarsus d0-1-0, p-1-1-1, r1-1-1, v2-2 -2. IV—femur d1-1-1, p0-1-1, r0-1-1; tibia d0-1-0, p1-1-0, r1-1-0, v2-2 -2; metatarsus d0-1-0, p1-1-1, r1-1-1, v2-2 -2. Palpal tibiae strong, approximately one-third of cymbium length; RTA subsquared, laRTA conspicuous, ppRTA small and rounded. Tegulum projected pro-apically; proximal fold of reservoir oriented prolaterally; TA large, projected retrolaterally; BEF restricted to retrolateral side of bulbus, transversally disposed in relation to tegulum; EP large, sub-rectangular, with a rounded retrolateral extension and bifid projection inserted medially; EA arising retrolaterally ( Figs. 73, 74 ).

Distribution. Known only from the type locality.

Other material examined: None.

Figures

FIGURES 73 – 80. Strotarchus praedator (O. Pickard-Cambridge, 1898), male: 73) palp, ventral; 74) palp, retrolateral. Strotarchus nebulosus Simon, 1888, female: 75) epigynum, ventral; 76) epigynum, dorsal. Strotarchus monasticus new species, male: 77) palp, ventral; 78) palp, retrolateral; female: 79) epigynum, ventral; 80) epigynum, dorsal. Scale bar = 0.5 mm: 73 - 74, 77 - 78; 0.25 mm: 75 - 76, 79 - 80. Abbreviations: A ― Atrium; AP ― Atrial pocket; BEF ― Basal embolar fold; CD ― Copulatory ducts; EA ― Embolar apex; EB ― Embolar basis; EP ― Embolar process; FD ― Fertilization ducts; GK ― Glandular knob; laRTA ― Apical lamella of Retrolateral tibial apophysis; ppRTA ― Prolateral process of Retrolateral tibial apophysis; S ― Spermathecae; SS ― Spermathecae stalk; TA ― tegular apophysis.