Strotarchus chamevazquezi Cubas-Rodriguez & Bonaldo & Brescovit 2023, sp. nov.
Creators: name: Cubas-Rodriguez, Alex M.
name: Bonaldo, Alexandre B.
name: Brescovit, Antonio D.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Cheiracanthiidae
Strotarchus
Strotarchus chamevazquezi

description: Strotarchus chamevazquezi sp. nov.
Type material. Holotype ♁ and paratype ♀ from La Bodega (13°56’40.7”N 87°13’23.9”W), Santa Ana, Francisco Morazán, Honduras, June 20, 2021, leg. A. Cubas (IBSP 324813). Paratype: one ♁ with same data as holotype (IBSP 324814).
Other material examined. HONDURAS: Francisco Morazán: Santa Ana, La Bodega (13°56’40.7”N 87°13’23.9”W), 1♁ (IBSP 324816); 1♁ 1♀ (IBPS 324815, SEM).
Etymology. The specific epithet is in honor of Dr. David Chamé-Vázquez (CIBNOR, México), for his great contributions to the study of the Mexican spider fauna and his great importance as a mentor in spider research for the first author.
Diagnosis. The males of Strotarchus chamevazquezi sp. nov. resemble those of S. minor Banks, 1909 by the presence of a basal embolar fold that crosses the apical portion of the tegulum, by the long embolus that arises retrolaterally, and by an extremely long cymbium (see Bonaldo et al. 2012: figs 103–104). They are differentiated by the absence of either ppRTA and laRTA (see Bonaldo et al. 2012: figs 103–104), by the arrow-shaped retrolateral tibial apophysis apices in ventral view (square in retrolateral view), and by the balloon-shaped embolar base (Figs 1D, 3A, 3B, 4C). Females resemble those of S. minor by the elliptical atrium (see Bonaldo et al. 2012: fig. 105) but differ by the parallel copulatory ducts, converging abruptly toward the spermathecae, and by the lateral margin of anterior atrium superposed to the atrial posterior margin (Figs 3C, 3D).
Description. Male (Holotype). Carapace light brown (Fig. 1A), labium, endites and sternum lighter than carapace, head region and chelicerae reddish-brown, legs light yellow, opisthosoma cream, striated with narrow yellowish-brown bands. Total length 5.19. Carapace 2.5 long, 1.74, wide. Eye diameters: AME 0.22, ALE 0.16, PME 0.19, PLE 0.20. Chelicerae with 3 promarginal teeth, the median largest, and 2 retromarginal teeth, separated by twice their width (Fig. 4A). Leg measurements: femur I 1.71/ II 1.22/ III 1.49/ IV 2.05. Leg spination: I—femur d1-1-1, p0-0-1, r0; tibia d0, p0, r0-0-1, v2-0-2; metatarsus d0, p1-1-1, r0-1-1, v2-2-2. II—femur d1-1-1, p0, r0-1-1; tibia d0-0-1, p0, r1-1-1, v1-2-0; metatarsus d0-1-0, p1-1-1, r1-1-1, v2-1-2. III—femur d1-1-1, p0-1-1, r1-1-1; tibia d0-0-1, p0-1-1, r0-1-1, v2-2-0; metatarsus d0-1-0, p1-1-1, r1-1-1, v2-2- 1m. IV—femur d1-0-1, p0-0-1, r0- 0-1; tibia d0, p0-1-1, r0-0-1, v2-2-2; metatarsus d0-1-1, p1-1-1, r0-1-1, v2-1-2. Palpal tibia ca. 1/3 of cymbium length, cymbium long, curved medially and ovoid-shaped in basal third; retrolateral tibial apophysis flattened and enlarged, apex sharp or blunt (Fig. 4B); ppRTA and laRTA absent. Tegulum rounded, proximal fold of reservoir thick, Vshaped; tegular apophysis inserted ventrally on prolateral side of tegulum; embolar base visible retrolaterally as concave area on expanded palp (Fig. 1D); basal embolar fold not clearly visible (Figs 1C, 3B), connecting with small portion of tegulum but displaced obliquely; embolar process small, rounded (Figs 1B, 3A, 4D).
Female (Paratype, IBSP 324813). Coloration as in male, except with darker carapace (Fig. 2A). Total length 6.52. Carapace 2.62 long, 2.0. Eye diameters: AME 0.25, ALE 0.16, PME 0.20, PLE 0.24. Chelicerae with promarginal teeth as in male and 2 retromarginal teeth, separated by three times their width (Fig. 4E). Leg measurements: femur I 1.61/ II 1.57/ III 1.41/ IV 2.10. Leg spination: I—femur d1-0-1, p0-0-2, r0; tibia d0, p0-0-1, r0-0-1, v2-2- 0; metatarsus d0, p0-0-1, r0, v2-2-0. II—femur d1-1-1, p1-1-0, r0; tibia d0, p0-0-1, r0-0-1, v2-2-0; metatarsus d0, p0-0-1, r0-1-1, v2-2-1. III—femur d1-1-1, p1-1-1, r0-0-1, v0; tibia d0-0-1, p1-1-0, r1-1-0, v1p-2-0; metatarsus d0, p1-1-1, r1-1-1, v2-2- 0. IV—femur d1-1-1, p0-0-1, r0-0-1; tibia d0-0-1, p0-1-1, r0-1-1, v2-0-2; metatarsus d0-2-2, p1-1-1, r1-1-1, v2-2-2. Epigynum with wide, narrow atrium with laterally projecting edges (Fig. 2B); atrial pocket large, oval posteriorly, median slit without lateral notches, rounded anteriorly (Figs 2D, 3D). Copulatory ducts with helicoid folds; glandular knob small, nearly triangular, projected distally; spermathecae enlarged posteriorly, curved boot-shaped; spermathecae continuous with spermathecae stalk (Figs 2 C-D, 3E-F, 4F)
Variation. Three males: Total length 5.19 − 5.60, carapace 2.50 − 2.70, femur I 1.71 − 1.85.
Natural history. The specimens were captured manually in wild areas and inside houses in La Bodega. Distribution. Known only from the type locality, Santa Ana, Francisco Morazán, Honduras (Fig. 5).
description: Published as part of Cubas-Rodriguez, Alex M., Bonaldo, Alexandre B. & Brescovit, Antonio D., 2023, A new species of Strotarchus Simon, 1888 from Honduras (Araneae, Cheiracanthiidae), pp. 582-588 in Zootaxa 5296 (4) on pages 584-588, DOI: 10.11646/zootaxa.5296.4.7, http://zenodo.org/record/7984446