Anyphaena bifurcata Rivera-Quiroz & Álvarez-Padilla 2023, sp. nov.
Creators: name: Rivera-Quiroz, F. Andrés
name: Álvarez-Padilla, Fernando
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Anyphaenidae
Anyphaena
Anyphaena bifurcata

description: Anyphaena bifurcata sp. nov.
urn:lsid:zoobank.org:act: 35864EEB-BF52-411A-82FC-C5BC0AD40F7E
Figs 19–21, 52
Differential diagnosis
The epigynum in A. bifurcata sp. nov. is broad, the anterior edge is more than two thirds of the abdomen width, the shape triangular and projected below the epigastric furrow (Fig. 19C), posterior third of the epigynal plate narrower, the tip excavated with a small central atrium where the copulatory openings are located (Figs 20E–F, 21G–H). Similar epigyna plates and atria are found in females of A. pectorosa, but differ from those of A.bifurcata sp. nov. by the trapezoidal shape and convex posterior margin (Dondale & Render 1982: figs 328–329). Broad epigynal plates are also present in A. triangularis sp. nov. and A. urieli sp. nov., but they are anteriorly projected in both species (Figs 10C, F, 13C, F). Males of A. bifurcata sp. nov. are differentiated from those of related species by their ventral tegular projection base being excavated and bifurcated with a thin rectangular process (Figs 20A–B, 21A– B, arrows), median apophysis with a small hook in ventral and retrolateral view, and cymbium base dorsally projected (Figs 20A–D, 21A–D). A similar cymbium and bifurcated ventral tegular projections are found in males of A. triangularis sp. nov. (Fig. 12A (arrow)) and A. urieli sp. nov. (Fig. 15A (arrow)), but they differ from those of A. bifurcata sp. nov. by not being excavated.
Etymology
The species epithet is taken from the Spanish word bifurcado and refers to the bifurcated ventral tegular projection diagnostic of this species.
Material examined
Holotype MEXICO • ♀; Veracruz, Calcahualco, Atotonilco, Plot I; 19.12569° N, 97.06756° W; alt. 2300 m; 15– 24 Feb. 2013; Aracnolab team leg.; oak forest fragment; LUP; CNAN-T01523.
Allotype MEXICO • ♂; same collection data as for holotype; AR_035; GenBank: ON619650; CNAN-T01512.
Paratypes MEXICO • 3 ♂♂; same collection data as for holotype; CNAN-T01547 • 2 ♀♀; same collection data as for holotype; CNAN-T01548 • 1 ♂; same collection data as for holotype; CNAN-T01549 • 1 ♀; same collection data as for holotype; 21–30 Mar. 2012; CNAN-T01550.
Additional material
MEXICO • 2 ♂♂; Veracruz, Calcahualco, Atotonilco, Plot I; 19.12569° N, 97.06756° W; alt. 2300 m; 15–24 Feb. 2013; Aracnolab team leg.; oak and tropical wet forest fragment; BERL • 4 ♂♂, 1 ♀; same collection data as for preceding; CRP • 1 ♀; same collection data as for preceding; AR_063; GenBank: ON619629 • 1 ♀; same collection data as for preceding; ANYM023 • 3 ♀♀, 4 ♂♂; same collection data as for preceding; LUP • 1 ♂; same collection data as for preceding; AR_036; GenBank: ON619651 • 2 ♂♂; same collection data as for preceding; ANYM019 • 1 ♂; same collection data as for preceding; PF; AR_037; GenBank: ON619652 • 1 ♀; same collection data as for preceding; 21–30 May 2012; LUP; AR_062; GenBank: ON619628 • 1 ♂; same collection data as for preceding; 4–14 Oct. 2012; BEAT; AR_034; GenBank: ON619649 • 1 ♀; same collection data as for preceding; ANYM021 • 1 ♀; same collection data as for preceding; BERL; ANYM022.
Description
Female
Total length 7.1. Carapace yellow, pattern with darker longitudinal bands over cephalic and thoracic areas, carapace margins and clypeus yellow (Fig. 19A, D). Sternum surface white, intercoxal triangles present on all legs. Labium brown, white at tip, longer than wide. Endites dark yellow, rectangular, slightly broader at tip (Fig. 19C). Chelicerae orange, paturon dorsum with darker and diffuse line pattern (Fig. 19B, D), promargin with four teeth, retromargin with eight to nine denticles. Leg coloration: light yellow with scattered dark patches, pattern slightly darker at metatarsi and tarsi. Abdomen yellow, hirsute, dorsal surface covered with scattered small brown patches, pattern lighter at center, forming longitudinal band, lateral surfaces with same pattern faded ventrally, ventral surface white, tracheal spiracle at middle (Fig. 19A–C). Copulatory openings inside small internal edges of atrium. Copulatory ducts sclerotized, short, slightly curved, entering spermathecae via lateral surfaces below seminal receptacles. Fertilization ducts short, straight, and emerging from anterior surface of spermathecae (Figs 20E–F, 21G–H). Cephalothorax length 2.68, thoracic width 2.2, cephalic width 1.19. Clypeus height 0.11. Eye diameters: AME 0.07, ALE 0.15, PME 0.12, PLE 0.13. Eye interdistances: AME– AME 0.07, AME–ALE 0.06, ALE–PLE 0.1, PME–PME 0.17, PME–PLE 0.1. Femur lengths: I 2.94, II 2.68, III 2.1, IV 2.77. Leg spination: femur I d1-1-1, p0-1-2, r0-1-1. Tibia I v2-2-0, p1-1-1, r1-1-1. Metatarsus I v2-2-0, p1-1-1, r1-1-1. Femur II d1-1-1, p0-1-1, r0-1-1. Tibia II v2-2-0, p1-1-1, r1-1-1. Metatarsus II v2-2-0, p1-1-1, r1-1-1. Femur III d1-1-1, p0-1-1, r0-1-1. Tibia III v2-2-2, p0-1-1, r0-1-1. Metatarsus III v2-2-2, p1-1-2, r1-1-2. Femur IV d1-1-1, p0-0-1, r0-0-1. Tibia IV v2-2-2, p1-1-1, r1-1-1. Metatarsus IV v2-2-2, p1-1-2, r1-1-2.
Male
Total length 5.8. Cephalothorax and abdomen coloration as in female except yellow chelicerae (Fig. 19E). Coxa II ventral surface with broad and shallow tubercle. Coxa III tubercle roughly rectangular with spine at middle. Coxa IV spur located at retrolateral basal corner (Figs 19F, 21E–F). Embolus long, translucent and filiform. RTA branches short, anterior branch curved with sclerotized margin, posterior branch small, triangular in dorsal and ventral views (Figs 20A, C–D, F 21A, C–D). Prolateral apophysis of palpal tibia small, conical (Figs 20B–C, 21B–C). Pedipalp tibia longer than wide, ventral surface with median stridulatory ridges. Median tibial apophysis absent (Figs 20C, 21A, D). Cephalothorax length 2.68, thoracic width 2.2, cephalic width 0.9. Clypeus height 0.11. Eye diameters: AME 0.07, ALE 0.11, PME 0.13, PLE 0.13. Eye interdistances: AME–AME 0.06, AME–ALE 0.05, ALE–PLE 0.09, PME– PME 0.15, PME–PLE 0.12. Femur lengths: I 3.1, II 2.94, III 2.26, IV 2.9. Leg spination as in female except: femur II r0-2-1. Femur IV p0-1-1, r0-1-1.
Variation
Females (N =10): total length 7.2 (± 0.67), cephalothorax length 2.84 (±0.12), thoracic width 2.19 (± 0.07), cephalic width 1.2 (± 0.04), femur I 2.88 (± 0.08). Males (N =10): total length 5.79 (± 0.17), cephalothorax length 2.79 (±0.09), thoracic width 2.21 (±0.06), cephalic width 1.0 (± 0.05), femur I 3.13 (± 0.19).
Distribution
This species is found in oak forest fragments around Pico de Orizaba Volcano National Park (Fig. 52).
Natural history
Most specimens were collected over vegetation by direct searching, Berlese funnels and cryptic searching on the ground vegetation.
description: Published as part of Rivera-Quiroz, F. Andrés & Álvarez-Padilla, Fernando, 2023, Integration or minimalism: twenty-one new species of ghost spiders (Anyphaenidae: Anyphaena) from Mexico, pp. 1-94 in European Journal of Taxonomy 865 on pages 34-38, DOI: 10.5852/ejt.2023.865.2097, http://zenodo.org/record/7867448