Ixchela mendozai, Valdez-Mondragón & Francke, 2015

Valdez-Mondragón, Alejandro & Francke, Oscar F., 2015, Phylogeny of the spider genus Ixchela Huber, 2000 (Araneae: Pholcidae) based on morphological and molecular evidence (CO 1 and 16 S), with a hypothesized diversification in the Pleistocene, Zoological Journal of the Linnean Society 175 (1), pp. 20-58 : 40-41

publication ID

https://doi.org/ 10.1111/zoj.12265

DOI

https://doi.org/10.5281/zenodo.10543331

persistent identifier

https://treatment.plazi.org/id/3D3A671C-357D-FFC9-19D6-E91A05D5FF57

treatment provided by

Felipe

scientific name

Ixchela mendozai
status

sp. nov.

Ixchela mendozai View in CoL SP. NOV.

Type data: MEXICO: Puebla: 1 ♂ holotype ( CNAN T0749 ) [24 February 2012; A. Valdez, C. Santibáñez, J. Mendoza, D. Barrales, A. Ortega] from Campamento Ecoturístico Cañadas Rojas, Puente Colorado (lat. 18.683°, long. −97.345°; 2231 m), Municipio Chapulco. Paratypes : 2 ♀♀ ( CNAN T0750 ), same data as holotype .

Etymology: The specific name is a noun in apposition and dedicated to arachnologist Jorge Iván Mendoza Marroquín for his participation in collecting the type series, and his contribution to knowledge of the spiders of Mexico.

Diagnosis: Resembles I. tlayuda , but distinguished by the FAC long and rounded, forming an angle of 90° with the chelicerae in lateral view ( Fig. 62 View Figures 56–67 ); the VAF with sharp tip ( Fig. 60 View Figures 56–67 ); the long, curved and sharp sub-distally sclerotized spine on ventral part of embolus (arrow, Fig. 63 View Figures 56–67 ); and the epigynum with three projections apically, the central markedly longer and curved, the lateral ones small and rounded ( Figs 64, 66, 67 View Figures 56–67 ).

Description: Male (Holotype). Prosoma: Pale yellow, with three brown markings on each side ( Fig. 57 View Figures 56–67 ). Ocular region pale yellow, with a brown longitudinal line projecting from AME ( Fig. 57 View Figures 56–67 ). Fovea surrounded with an irregular, wide brown region, extending backward ( Fig. 57 View Figures 56–67 ). Clypeus pale yellow, with a wide brown region near chelicerae ( Fig. 58 View Figures 56–67 ). Chelicerae brown, pale around the SAC ( Fig. 59 View Figures 56–67 ). Sternum pale yellow. Labium and endites brown; endites with retrolateral apophysis, which has a small subdistal protuberance. Legs: Coxae pale yellow, with small brown markings on retrolateral and prolateral parts. Trochanters pale yellow. Femora pale orange, with several brown rings throughout their length, one sub-distal ring dark brown, wide, very marked. Patellae brown. Tibiae pale orange, with several brown rings throughout their length, less visible than on femora. Metatarsi and tarsi orange, without colour rings. Legs with numerous oblique, long setae; with few short, vertical setae. Opisthosoma: Conical, longer than high, pale blue, with dorsal grey pattern ( Figs 56, 57 View Figures 56–67 ). Gonopore plate oval. Palp: Femur pale yellow, conical, with several long setae ventrally; VAF conical, with sharp tip ( Figs 60, 61 View Figures 56–67 ). Patella and tibia pale orange. Procursus brown, long and straight, with distal spine, thin and curved ( Figs 60, 61 View Figures 56–67 ). VPP with 3–4 long setae ( Fig. 60 View Figures 56–67 ). Embolus conical, dorsally with a curved spine ( Figs 60, 61 View Figures 56–67 ), ventrally with apical sigmoid projection ( Figs 60, 61 View Figures 56–67 ). PAB wide ( Fig. 61 View Figures 56–67 ). Measurements: Total length 6.40. Carapace 2.45 long, 2.30 wide. Clypeus 0.95 long. Diameter AME 0.14, ALE 0.22, PME 0.17, PLE 0.20. Distance ALE–PME 0.17, PME–PME 0.26. Leg I: 45.31 (11.75 + 1.07 + 11.87 + 15.62 + 5.00), tibia II: 8.40, tibia III: 6.25, tibia IV: 8.30. Tibia I l/d: 31.50.

Female (Paratype). Similar to the male, but with the following differences: Prosoma: The three brown markings larger and darker than on male. Clypeus with brown region longer than on male, forming an upside down, U-shaped area. Legs: The brown rings on femora and tibiae slightly more marked than on male. Epigynum: Wider than long, with three projections at apex ( Figs 64, 66, 67 View Figures 56–67 ), with a small rounded pit on central projection ( Fig. 64 View Figures 56–67 ). PP small ( Fig. 65 View Figures 56–67 ); with small, oval sac-shaped concavities between MSE and PP ( Fig. 65 View Figures 56–67 ). MSE with upside down Y-shape ( Fig. 65 View Figures 56–67 ). Measurements: Total length 5.40. Carapace 2.15 long, 2.10 wide. Clypeus 0.80 long. Diameter AME 0.10, ALE 0.22, PME 0.18, PLE 0.21. Distance ALE–PME 0.16. PME–PME 0.24. Leg I: 31.97 (8.70 + 1.00 + 8.90 + 10.37 + 3.00), tibia II: 6.40, tibia III: missing, tibia IV: 6.50; tibia I l/d 28.40.

Natural history: The specimens were collected in an oak forest, the females on their irregular sheet webs among boulders on the ground; the male holotype was collected on an irregular sheet web in a corner inside a cabin, being the first specimen of the genus Ixchela collected inside a building.

Distribution: MEXICO: Puebla ( Fig. 90 View Figure 90 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Ixchela

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