Bolostromus laheredia Dupérré 2023, new species
Creators: name: Dupérré, Nadine
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Cyrtaucheniidae
Bolostromus
Bolostromus laheredia

description: Bolostromus laheredia new species
Figs 1–3, map 1
Type material. Male holotype from Costa Rica, La Heredia, La Selva Biol. Sta., 13.iii.1987, D.M. Olson (MCZ 71157). Paratype: COSTA RICA: J, La Heredia, La Selva (near Puerto Viejo), IV. 1986, W. Eberhard (MCZ 71139).
Etymology. The specific name is a noun in apposition taken from the type locality, La Heredia in Costa Rica.
Diagnosis. Males most resemble B. panamanus but are distinguished by the combination of the following combination characters: tibiae I with 4–5 ventral spines (Fig. 2D); eyes on mound (Fig. 2C); palpal bulb round and embolus tip strongly curved apically (Fig. 3C–E). Whereas B. panamanus has two ventral spines on tibiae I (Fig. 7D); eyes not on prominent mound (Fig. 7C); palpal bulb thinner and tip sinuous (Fig. 8C–E).
Description. Male (holotype): Total length: 4.16; carapace length: 2.10; carapace width: 1.74; carapace height: 0.9; abdomen length: 2.06. CEPHALOTHORAX: Carapace almost rectangular slightly wider medially, margin sinuous; pars cephalica orange-brown; pars thoracica light orange-brown, smooth; cephalic groove not well defined, without pit medially; fovea broad, procurved (Fig. 2A); caput not strongly elevated (Fig. 2C). Clypeus height: 0.1. Sternum 1.32/0.99, yellow, smooth; all sigillae rounded, inconspicuous (Fig. 2B). Labium yellow without cuspule. Endites quadrangle; yellow with 13 cuspules; serrula not observed. Chelicerae dark reddish-orange; promargin six teeth and 10 denticles; rastrellum with seven spines. EYES: AME: 0.14; ALE: 0.19; PLE: 0.13; PME: 0.07; interdistances: AME: 0.05; AME-ALE: 0.01; PME: 0.28; PME-PLE: 0.03; LE: 0.02; ocular quadrangle: 0.59/0.58/0.28. ABDOMEN: oval, dark gray dorsally, and light beige ventrally (Fig. 1A, B). Spinnerets: median spinnerets: 0.17; lateral spinnerets: 0.32/0.31/0.39. LEGS: Leg I, femur, patellae, and tibiae dark orange-brown, metatarsi and tarsi yellow; leg II femur orange-brown, patellae to tarsi orange; leg III–IV without a pattern, uniformly yellow. Coxae I–II without inner short stiff setae. Metatarsi I–II with half scopulae (Fig. 2D); tarsi I–II with thick complete scopulae (Fig. 2D); III–IV without scopulae. Tarsal claw teeth (6/9) (8/3) (5/3) (5/2). LEGS MEASUREMENTS: I 7.06 (2.03/0.93/1.63/1.43/1.04); II 5.93 (1.69/0.70/1.48/1.12/0.94); III 4.39 (1.24/0.62/0.7 5/1.00/0.78); IV 6.39 (1.79/0.62/1.68/1.44/0.86); leg formula: 1423. LEGS SPINATION: femur I–III (0); IV with 6 grouped pro-apical spines; patellae I 1v, II, IV (0); III with 9p, 1r; tibia I 1-1-1-1v, 3rl; II 1v, 2vap; III 1d, 1-1v, 2vap; IV 2-2v, 2vap; metatarsus I (0); II 1v, 1vap; III 3p, 1-1-2-3d, 2r, 1-1-2v, 2vap; IV 2r, 1-1v, 3vap; tarsus I, II (0); III 1-1-1v; IV 1v. GENITALIA: Palp: 1.26/0.5/1.02/0.45; bulb: 0.48/0.24. Femur slightly longer than tibiae, darker than other palpal segments; cymbium with three apical spines (Fig. 3A, B); bulb globose; embolus short with curved tip (Fig. 3C–E).
Female: Unknown.
Distribution. Only found at the type locality in Costa Rica.
Natural History. Both specimens were collected in a tropical wet forest at an altitude between 100– 110m.
description: Published as part of Dupérré, Nadine, 2023, Review of the American genus Bolostromus Ausserer, 1875 with the description of fourteen new species (Araneae, Cyrtaucheniidae), pp. 1-88 in Zootaxa 5317 (1) on page 9, DOI: 10.11646/zootaxa.5317.1.1, http://zenodo.org/record/8153783