Homoeomma josti Duperre & Tapia 2026, sp. nov.

Résumé fourni par la source

Homoeomma josti Dupérré & Tapia sp. nov. Figs 1, 2, 3, 4, 5, 6, 36 A, 39 Type material. Holotype: 1 ♂ from Ecuador, Tungurahua Province, El Copete (-01.4428, -78.4264) 3250 m, 25.03. – 04. 04. 2024, yellow pan trap, M. Huben, ECFN 12484 (QCAZ). Paratypes: same data as holotype • 2 ♂ ECFN 12586 (ZMH -A 0032950) • 2 ♂ ECFN 12589 (QCAZ) • 1 ♂ ECFN 12587 (DTC) • 1 ♂ ECFN 12588 (ZIMG) • 1 ♀ ECFN 13354 (QCAZ) • 1 ♀ from Tungurahua Province, Totoras (-01.31332, -78.60376) 2696 m, 11 June 2016, hand collecting, E. Tapia, A. Tapia, N. Dupérré, ECFN 13358 (QCAZ). Diagnosis. Male most resemble H. familiare, H. strabo and H. chilense Montenegro & Aguilera, 2018 but are distinguished by their disconnected, slightly serrated prolateral superior keel; and the presence of a small retrolateral tooth (Fig. 6 A, C, D); retrolateral tooth absent in H. familiare and H. strabo (Galleti-Lima et al. 2026: fig. 3 A, B; Gerschman and Schiapelli 1972: figs 23, 24); and two small teeth in H. chilense (Montenegro Vargas et al. 2018: fig. 2 e). Females are diagnosed by their uniquely comma-shaped spermathecae (Fig. 5 A – D). Etymology. The specific epithet is a patronym in honor of Lou Jost, mathematician, population geneticist and orchid taxonomist for his work protecting Ecuador diversity through EcoMinga foundation. Description. (Holotype male). Total length: 20.07; carapace length: 9.63; width 9.46, abdomen length 10.44. Carapace hexagonal, reddish-brown covered by black setae along radiating line and pale setae all through; pars cephalica flat; fovea straight (Fig. 1 A, B). Eyes on low mound; AME 0.27, ALE 0.32, PME 0.30, PLE 0.37; PME - PME 0.68. Sternum orange-brown: 4.11 length, 3.64 width; labio-sternal mound joined; with three sigillae close to margin, anterior rounded, median and posterior oval (Fig. 1 C). Labium V-shaped, orange with nine cuspules; endites orange with 73 cuspules extending over 13 % of the endite; anterior lobe moderately extended (Fig. 1 C). Chelicerae orange-brown covered with pale decumbent setae, and black erected setae; 14 retromarginal teeth, and ~ 25 intermarginal denticles. Abdomen elongated oval, dark brown with dark decumbent setae and reddish-brown erected setae; urticating setae Type III present dorso-basally and centrally (0.43 mm) (Fig. 36 A); spinnerets: PMS 0.87, PLS 3.33 (1.03 / 0.75 / 1.55). Leg measurements: I 32.23 (9.32 / 4.12 / 7.44 / 6.90 / 4.45); II 29.91 (8.75 / 3.76 / 6.53 / 6.45 / 4.42); III 27.95 (7.53 / 3.85 / 5.58 / 6.90 / 4.09); IV 34.77 (9.28 / 3.25 / 7.88 / 10.03 / 4.33); leg formula 4123. Leg spination: femur I p 1-1, r 1-1, II p 1, r 1-1, III d 1-1 - 1 - 1, p 1-1, r 1-1, IV d 1-1 - 1 - 1 - 1, p 1-1 - 1 - 1 - 1 - 1 - 1, r 1-1 - 1; tibia I p 1-1, r 1-1 - 1, v 2-2 - 1 (apical), II p 0-1 - 1, r 1-1 - 1, v 1-2 - 1 - 2 (apical), III d 2-2 - 2, p 2-2 - 2 - 1, r 2-2 - 1, v 1-2 - 2 (apical); IV d 2-1 - 2 - 2, p 2-2 - 2 - 1, r 1-1 - 1 - 1, v 2-2 - 3 (apical); metatarsus I p 0-1 - 1, r 1, v 0-1 - 1 (apical); II d 0-2 - 2, p 0-2 - 1, r 1-1, v 2-2 - 2 - 2 (apical); III d 0-2 - 2 - 2, p 1-1 - 1, r 1-1 v 1-2 - 2 - 2 (apical); IV d 2-1 - 2 - 2, p 1-1 - 1 - 1, r 1-1 - 1 v 2-2 - 2 - 2 - 1 - 2 (apical). Tibia I apophysis with two branches, smaller dorsal branch with long, basal megaspine and longer ventral branch with short apical megaspine (Fig. 6 E); metatarsus I curved, not folding between the two branches. Tarsus fully scopulate separated by thicker, longer setae; metatarsal scopula I 55 %, II 20 %, III 5 %, IV ascopulate. Palpal tibia; 4.58 length, 1.62 width; spination p 6. Palpal cymbium bilobed without basal retrolateral apophysis (Fig. 6 F); palpal bulb with well-developed triangular tegular apophysis (Fig. 2 E); prolaterally small tooth; proeminent, disjunct PS keel, PS and PI circling the bulb; embolic keel (EK) overlapping; retrolaterally with RS, RI keels absent, with small retrolateral tooth (Fig. 6 A – D). Female (Paratype ECFN 13358). Total length: 22.98; carapace length: 8.84; width 8.50, abdomen length 14.14. Live coloration: carapace and leg dark brown covered with orange-reddish erected setae; abdomen blackish covered with orange-reddish erected setae (Fig. 3). Carapace as in male. Eyes: AME 0.24, ALE 0.42, PME 0.31, PLE 0.33, PME - PME 0.70. Chelicerae as in male (Fig. 4 B); with 12 retromargianl teeth, and ~ 11 intermarginal denticles. Labium with 25 cuspules, endites with 148 cuspules covering 15 % of endites surface (Fig. 4 C) Sternum as in male; 3.78 length, 4.42 width (Fig. 4 C). Leg: I 22.98 (6.64 / 3.86 / 5.67 / 3.65 / 3.16); II 20.73 (6.16 / 3.36 / 4.52 / 3.81 / 2.88); III 17.00 (3.23 / 2.30 / 4.18 / 4.39 / 2.90); IV 26.37 (7.24 / 3.08 / 5.89 / 6.46 / 3.70); leg formula 4123. All tarsi with scopula separate by thicker, longer setae; metatarsal scopula I 50 %, II 35 %, III 10 %, IV ascopulate. Spination: femur I p 1-1, II p 1, III, p 1-1, r 1-1, IV, p 1, r 1, d 1; tibia I v 0-1 - 2 (apical), II v 0-1 (apical), III p 1-1 - 1, r 1-1, v 2-3 (apical); IV p 1-1 - 1, r 1-1 - 1 v 1-2 - 3 (apical); metatarsus I v 1-1 (apical); II v 1-1 - 2 (apical); III p 1-1 - 1, r 1-1 - 1 v 1-1 - 2 - 3 (apical); IV p 1-1 - 1 - 1, r 1-1 - 1, v 1-1 - 2 - 2 - 3 (apical). Abdomen ovoid covered with dark brown recumbent setae and light orange erected setae (Fig. 4 A); urticating setae type III (0.46 mm). Spinnerets: PMS 0.87; PLS 3.43 (1.07 / 1.05 / 1.31). Internal genitalia with dual spermathecae, wider basally than apically, comma-shaped; guard plates absent (Fig. 5 A, B). Distribution. Only known from the type locality, Tungurahua Province, Ecuador. Variation. Male body length: 15.53–20.07, x 16.58, n = 5; carapace length 6.92–9.63, x 7.70, n = 5. Natural history. Specimens were collected between 2696–3250 m in high evergreen forest of the Eastern Cordillera of the Andes (BsAn 01) (Aguirre et al. 2013).

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.