Rothilena griswoldi, Maya-Morales, Julieta & Jiménez, María Luisa, 2013

Maya-Morales, Julieta & Jiménez, María Luisa, 2013, Rothilena (Araneae: Agelenidae), a new genus of funnel-web spiders endemic to the Baja California Peninsula, Mexico, Zootaxa 3718 (5), pp. 441-466 : 445-453

Rothilena griswoldi new species

Figures 8–19 , 22–31

Type. Male (Holotype): MEXICO: Baja California Sur, Municipality of Comondú, San Isidro-La Purísima, collected in pitfall trap, 26°12′13″N, 112°02′54″W, 291 m, 20.IX.2003, I. Posada (CARCIB 1923), deposited at CARCIB.

Etymology. This species is named after Charles E. Griswold for his contribution to the knowledge of systematics of spiders worldwide.

Diagnosis. Males differ from R. cochimi and R. pilar by having the basal part of RTA with an ectal margin notched ( Figs. 22, 24 ), conductor with a mesal projection with a sharp tip ( Fig. 24 ), and the distal projection of conductor hook-shaped ( Figs. 17, 19 ). Females of R. griswoldi are distinguished from R. cochimi and R. pilar by having lateral hoods covering more than half of the total plate length, from R. golondrina by having straight mesal hood margins ( Figs. 26, 27 ), from R. sudcaliforniensis and R. naranjensis by having the spermathecae separated by their diameter from ventral margin of the plate in posterior view ( Figs. 30, 31 ).

Description. Male (Holotype): Coloration. Prosoma with a black band around the border of thoracic region. Two longitudinal symmetric dark bands on carapace, intensified by brown plumose hairs. Black spot in ocular region. Chelicerae reddish. Condyles dark orange covered by clypeus. Endites and labium yellowish with white tips. Sternum yellowish with black border. Legs yellowish with three rings in femur, paler in patella and tibia. Opisthosoma light brown with a black spot at anterior dorsum with two lateral white bands and two longitudinal black bands with four pairs of black spots in the posterior part. Basal segment of posterior lateral spinnerets with black spots. Habitus. Total length 5.13. Carapace length 2.63, width 2.5, cephalic region width 0.8, ocular region width 0.52. Eye rows strongly procurved ( Fig. 8 ). Eye diameter: AME, PME and PLE 0.12, ALE 0.13. Distance between eyes: AME-AME 0.04, AME-ALE 0.08, AME-PME 0.13, ALE-PLE 0.04, ALE-ALE 0.23, PME-PME 0.08, PME-PLE 0.08. Clypeus height (measured under ALE) 0.17. Chelicerae: basal segment length 0.96, fang length 0.42. Labium wider than long (0.38/0.27). Endites slightly convergent (distance at their base compared with that at their tips 0.38/0.29) with 32 teeth each ( Fig. 10 ). Sternum longer than wide (1.24/1.05). Opisthosoma longer than wide (2.38/1.63). Anterior lateral spinnerets separated by their basal diameter (0.19/0.19), posterior lateral spinnerets with distal segment longer than basal segment (0.6/0.44). Legs. Relation prosoma/patella-tibia I: 2.63/3. Legs length: I—femur 2.67/ patella-tibia 3/ metatarsus 2.62/ tarsus 1.76; II—2.71/ 2.71/ 2.62/ 1.67; III—2.57/ 2.62/ 2.9/ 1.62; IV—3.19/ 3.62/ 4/ 1.95. Spination. Femur dorsal I—1-2 -2-1/ II—1-2 -1-2/ III—1-1 -1-2/ IV—1-1 -1-2; patella dorsal I—1-2 -1/ II—1-2 -1/ III—1-2 -1/ IV—1-2 -1; tibia I—dorsal 1-1-0/ ventral 2-2-2/ prolateral 0-1-0/ retrolateral 0; II—1-1 -1/ 1-1-2/ 0-1-0/ 0; III—1-2 -0/ 1-1-2/ 0-1-0/ 0-1-0; IV—1-1 -0/ 1-1-2/ 0-1-1/ 0-1-1; metatarsus I—0/ 2-2-2/ 0-1-0/ 0; II—0/ 2-2-1/ 0-1-1/ 0-0-1; III—2-1 -0/ 2-2-2/ 0-1-1/ 0-1-1; IV—3-2 -2/ 1-1-2-2/ 0- 0-1/ 0-0-1. Number of trichobothria in tarsus: I—6, II—6, III—5, IV—5. Paired tarsal claws with 12 teeth ( Fig. 12 ). Pedipalp ( Figs. 16–19 , 22–25 ). Embolus sinuous. Conductor with mesal projection ended in sharp tip and supporting the embolus, stout ectal projection and distal projection ended in a hook. Basal part of RTA with a notched margin. Number of dorsal spines: femur, 3, patella 2, tibia 4. Cymbium length 1.1, width 0.58.

Genus RΤA (♂) Embοlus (♂) Cοnductοr (♂) Τegular prοcesses Fulcrum (♂) Radix Relatiοn οf distal (♂) (♂) and basal segments οf PLS (♂ ♀)

Agelenopsis Distal Large, οpen circle Simple with a brοad Absent Absent Present ~2∶1 (Chamberlin & Ivie base

1941∶ fig. 31)

……continued on the next page Female (paratype from the type locality) (CARCIB 1918): Coloration. Similar to male with leg rings more accentuated. Habitus. Total length 5.63. Carapace length 2.75, width 1.88, cephalic region width 1.12, ocular region width 0.61. Eye rows strongly procurved. Eye diameter: 0.12. Distance between eyes: AME-AME 0.08, AME-ALE 0.04, AME-PME 0.12, ALE-PLE 0.02, ALE-ALE 0.23, PME-PME 0.08, PME-PLE 0.1. Clypeus height 0.11. Chelicerae: basal segment length 1.03, fang length 0.52. Labium wider than long (0.45/0.27). Endites convergent (distance at their base compared with that at their tips 0.45/0.15). Sternum longer than wide (1.43/1.05). Opisthosoma longer than wide (3.13/1.88). Anterior lateral spinnerets separated by their basal diameter (0.24/ 0.24), posterior lateral spinnerets with distal segment longer than basal segment (0.58/0.44). Legs. Relation prosoma/patella-tibia I: 2.75/2.62. Legs length: I—femur 2.29/ patella-tibia 2.62/ metatarsus 1.9/ tarsus 1.43; II— 2.14/ 2.43/ 1.67/ 1.1; III—2.05/ 2.48/ 2.05/ 1.19; IV—2.62/ 3.29/ 3.1/ 1.52. Spination. Femur dorsal I—1-1 -1-2/ II—1-2 -1-2/ III—1-1 -2-2/ IV—1-1 -1-2; patella dorsal I—1-2 -1/ II—1-2 -1/ III—1-2 -1/ IV—1-2 -1; tibia I—dorsal 1-0-0/ ventral 1-2-2/ prolateral 0-1-1/ retrolateral 0; II—1-1 -1/ 1-1-2/ 0-1-0/ 0; III—1-2 -1/ 1-1-2/ 0-1-1/ 0-1-0; IV—1 -0-1/ 1-1-2/ 0-1-1/ 0-1-1; metatarsus I—0/ 2-2-1/ 0-1-1/ 0-0-1; II—0/ 2-2-1/ 0-1-1/ 0-1-1; III—2-1 -2/ 2-2-2/ 0-1-1/ 0-1-2; IV—3-1 -2/ 1-1-1-1-1-2/ 0-1-1/ 0-1-1. Number of trichobothria in tarsus: I—7, II—5, III—4, IV—5. Pedipalp. Number of dorsal spines: femur 3, patella 2, tibia 4. Epigynum ( Figs. 26–31 ). Hoods cover more than half of length plate with the mesal margin almost straight. Spermathecae separated by more their diameter and apart from the ventral margin in posterior view. Copulatory ducts connected anterolaterally to the spermathecae, anterior part of ducts separated by less their width. Epigynum plate wider than long (0.73/0.55).

Variation. Total body length in males varies between 4.25 and 5.88 (n = 9) and in females between 5.63 and 6.5 (n = 3). Male prosoma length varies between 2.25 and 3.13 (n = 9) and in females between 2.75 and 3.13 (n = 3). Patella-tibia I length in males varies between 2.25 and 3.34 (n = 8) and in females between 2.75 and 3.13 (n = 3). Some males without longitudinal bands in prosoma and other spots are faint.

Additional material examined. Paratypes: MEXICO: Baja California Sur, Municipality of Comondú, same locality of holotype, 1 ♂ by pitfall trap, 20.IX.2003, I. Posada (CARCIB 1921); 1 ♀ by pitfall trap, 27.IX.2002, C. Palacios and C. Frieven (CARCIB 1918); 2 ♂ by pitfall trap, 26.X.2003, C. Palacios and C. Frieven (CARCIB 1919); 1 ♂ by pitfall trap, 26.X.2002, M. Correa (CARCIB 1920); 1 ♂ by pitfall trap, 26.X.2002, M. Correa (CARCIB 1922); 2 ♂ by pitfall trap, 14.XII.2002, M. Correa (CARCIB 1915); 1 ♂ by pitfall trap, 14.XII.2002, M.

Correa (CARCIB 1916); 1 ♀ by pitfall trap, 20.IX.2003, I. Posada (CARCIB 1917); Carambuche, 1 ♀ by hand collecting in ground, 26°13′33.4″N, 112°00′47.6″W, 120 m, 31.X.2012, C. Palacios, J. Maya and B. Rocha (CARCIB 2707).

Habitat. The specimens were collected in oases dominated by Prosopis articulata (velvet mesquite, mesquite amargo), Vallesia glabra (pearlberry, otatave), Cercidium microphyllum (palo verde) and citruses (Wiggins 1980, Rebman & Roberts 2012).

Distribution. San Isidro-La Purísima and Carambuche, Municipality of Comondú, Baja California Sur, Mexico ( Fig. 7 ).

Figures

FIGURE 7. Known distribution of Rothilena griswoldi sp. nov., Rothilena cochimi sp. nov., Rothilena pilar sp. nov., Rothilena golondrina sp. nov., Rothilena sudcaliforniensis sp. nov. and Rothilena naranjensis sp. nov.

FIGURES 8 – 15. Rothilena griswoldi sp. nov., male (SEM). 8. Eyes, frontal view; 9. Chelicera, retromargin showing teeth; 10. Endites showing serrula, dorsal view; 11. Lyriform organ on metatarsus-tarsus I joint; 12. Tarsus I showing claws; 13. Tarsal organ. 14. Anterior lateral spinneret; 15. Distal segment of posterior lateral spinneret. Scale bars: 8, 10 = 40 µm; 9 = 30 µm; 11, 12, 14, 15 = 20 µm; 13 = 9 µm.

FIGURES 16 – 21. Rothilena spp., males (SEM). 16 – 19. Rothilena griswoldi sp. nov.: 16. Expanded bulb of pedipalp, prolateral view; 17. Same, retrolateral view; 18. Conductor, ventral view; 19. Same, anterior view. 20, 21. Rothilena cochimi sp. nov.: 20. Bulb of pedipalp, prolateral view; 21. Conductor, ventral view. Abbreviations: CB, cymbium; dp, distal projection of conductor; E, embolus; ep, ectal projection of conductor; MA, median apophysis; mp, mesal projection of conductor; RTA, retrolateral tibial apophysis; ST, subtegulum. Scale bars: 16, 20 = 60 µm; 17, 19 = 40 µm; 18, 21 = 30 µm.

FIGURES 22 – 25. Rothilena griswoldi sp. nov., male pedipalp. 22, 24. Ventral view; 23, 25. Retrolateral view. Abbreviations: dp, distal projection of conductor; E, embolus; ep, ectal projection of conductor; MA, median apophysis; mp, mesal projection of conductor; RTA, retrolateral tibial apophysis; T, tegulum. Scale bar = 0.25 mm.

FIGURES 26 – 31. Rothilena griswoldi sp. nov., female epigynum. 26, 27. Ventral view; 28, 29. Dorsal view; 30, 31. Posterior view. Abbreviations: A, atrium; CDa, anterior part of copulatory ducts; CDp, posterior part of copulatory ducts; FD, fertilization ducts; H, hoods; P, epigynum plate; S, spurs; SP, spermathecae. Scale bar = 0.25 mm.