Strotarchus jacala, Bonaldo, Alexandre B., Saturnino, Regiane, Ramírez, Martín J. & Brescovit, Antonio D., 2012

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 : 22-23

Strotarchus jacala new species

Figs. 89−92

Type material. Male holotype, male and female paratypes from 43 km of SW Huejutla [98º25.2'W, 21º7.8'N] (1500m. elev., cloud forest), Tlanchinol, Hidalgo, Mexico, Jun. 14−Aug. 4, 1983, S. & J. Peck coll.; female paratype from 15 mi NE of Jacala , at km. 303 (small cave, 99º02'W, 21º05'N), Jul. 27, 1966, J. & W. Ivie coll., all deposited in AMNH.

Etymology. The specific name is a noun in apposition taken from the type locality.

Diagnosis. Males of Strotarchus jacala n. sp. resemble those of S. beepbeep n. sp. by the tegular apophysis rounded and medially inserted in the tegular margin, but differ by the basal embolar fold narrower and displaced transversely in relation to the tegulum, allowing the embolar base to be visible in ventral view ( Figs. 89, 90 ). Females differ from most of the other species of the genus by the narrow atrium; from those of S. beepbeep n. sp. by the short, weakly coiled copulatory ducts and from those of S. mazamitla n. sp. by the straight posterior atrial margin ( Figs. 91, 92 ).

Description. Male (Holotype). Carapace orange, with darker cephalic area, thoracic groove brown. Chelicerae, endites and labium red brown. Sternum yellow with brown margins. Legs orange. Abdomen light gray, spinnerets orange. Total length 7.40. Carapace 3.10 long, 2.60 wide. Eye diameters: AME 0.24, ALE 0.20, PME 0.22, PLE 0.22. Chelicerae with 3 promarginal teeth, the median largest, and 2 retromarginal teeth, separated by three times their width. Leg measurements: femur I absent/ II 3.00/ III 4.10/ IV 5.20. Leg spination: I—absent. IIfemur d1-1-1, p0-1-1, r0-1-0; tibia d0-1-0, p1-1-0, r1-1-0, v2-2 -0; metatarsus d0-1-0, p1-1-2, r1-1-2, v2-2 - 1m. III—femur d1-1-1, p1-1-1, r0-0-1; tibia d0-1-0, p1-1-0, r1-1-0, v1 p-2-0; metatarsus d0-1-1, p1-1-2, r1-1-2, v2-2 - 1m. IV—femur d1-1-1, p0-0-1, r0-0-1; tibia d0, p1-1-0, r1-1-0, v1 p-2-1r; metatarsus d0-1-0, p1-1-2, r1-1-2, v2-2 - 1m. Palpal tibiae thin, with half of the cymbial length; RTA triangular; ppRTA small, rounded; laRTA weak. Tegulum slightly pointed basally, proximal fold of reservoir retrolaterally oriented; TA oval, inserted on retrolateral margin of tegulum, medially weakly sclerotised; EB visible ventrally in unexpanded bulb; BEF restricted to retrolateral side of bulbus; EP ornamented, composed of a triangular portion with distal pointed tip, a basal, small curved projection and a posterior rounded projection; EA arising retrolaterally ( Figs. 89, 90 ).

Female (Paratype). Coloration as in male. Total length 9.00. Carapace 3.60 long, 2.80. Eye diameters: AME 0.24, ALE 0.22, PME 0.20, PLE 0.22. Chelicerae with 3 promarginal teeth, the median largest, and 2 retromarginal teeth, separated by twice their width. Leg measurements: femur I 3.30/ II 3.00/ III 2.60/ IV 3.20. Leg spination: Ifemur d1-1-1, p0-1-1, r0; tibia d0-1-0, p1-1-0, r1-1-0, v2-2 -0; metatarsus d0-1-0, p1-1-2, r1-1-2, v2-2 - 1m. IIfemur d1-1-1, p0-1-1, r0; tibia d0-1-0, p1-1-0, r1-1-0, v2-2 -0; metatarsus d0, p1-1-2, r1-1-2, v2-2 - 1m. III—femur d1-1-1, p0-1-1, r0-0-1; tibia d0-1-0, p1-1-0, r1-1-0, v1 p-2-0; metatarsus d0, p1-1-2, r1-1-2, v2-2 - 1m. IV—femur d1-1-0, p0, r0-0-1; tibia d0, p1-1-0, r1-1-0, v2-2 -1r; metatarsus d0, p1-1-2, r1-1-2, v2-2 - 1m. Epigynum: atrium sub-eliptical, anterior margin slightly projected medially; AP large, rounded posteriorly, posterior lateral margins straight; median slit deep, without lateral notches, almost circular anteriorly; CD parallel, with few helicoid folds; GK rounded, base indistinct, anteriorly oriented; SS slightly enlarged on the basis; spermathecae globose ( Figs. 91, 92 ).

Variation. Two males: total length 7.40−8.00; females: total length 9.00−9.20; carapace 2.50−3.30; femur I 3.10−3.30.

Distribution. Mexico.

Other material examined. None.

Figures

FIGURES 89 – 96. Strotarchus jacala new species, male: 89) palp, ventral; 90) palp, retrolateral; female: 91) epigynum, ventral; 92) epigynum, dorsal. Strotarchus beepbeep new species,. male: 93) palp, ventral; 94) palp, retrolateral; female: 95) epigynum, ventral; 96) epigynum, dorsal. Abbreviations: BEF ― Basal embolar fold; EA ― Embolar apex; EB ― Embolar basis; EP ― Embolar process; TA ― tegular apophysis. Scale bar = 0.5 mm: 89 - 90, 93 - 94; 0.25 mm: 91 - 92, 95 - 96.