Bolostromus losrios, Dupérré, 2023

Dupérré, Nadine, 2023, Review of the American genus Bolostromus Ausserer, 1875 with the description of fourteen new species (Araneae, Cyrtaucheniidae), Zootaxa 5317 (1), pp. 1-88 : 73-74

publication ID	https://doi.org/ 10.11646/zootaxa.5317.1.1
publication LSID	lsid:zoobank.org:pub:A88A6184-36E3-4FDD-9BE0-862EC7361ED7
DOI	https://doi.org/10.5281/zenodo.8153897
persistent identifier	https://treatment.plazi.org/id/03BC87C1-FF8B-1417-96D5-3ACA037501A2
treatment provided by	Plazi
scientific name	Bolostromus losrios
status	sp. nov.

Treatment

Bolostromus losrios new species

Figs 56–58 View FIGURE 56 View FIGURE 57 View FIGURE 58 , map 2 View MAP 2

Type material. Male from holotype Ecuador, Los Ríos Province, Centro Cientifico Rio Palenque (00°54’S 79°00’W), 23 Dec. 1980, bosque secundario, colleción MAB, UNESCO ( QCAZ). GoogleMaps Paratypes: Ecuador: Los Ríos Province: 1J, Centro Cientifico Rio Palenque (00°54’ S 79°00’W) GoogleMaps , 1. III .1979 , bosque secundario, Sandoval ( QCAZ); 1J, 2. III .1979 , bosque secundario, S. Sandoval ( QCAZ).

Etymology. The specific name is a noun in apposition taken from the province in which the type locality is situated.

Diagnosis. Males most resemble B. primus n. sp. but are distinguished from all species by the combination of the following characters: carapace and sternum strongly reticulate ( Fig. 57A, B View FIGURE 57 ) and embolus with strongly bent tip ( Fig. 58C, E View FIGURE 58 ).

Description. Male (holotype): Total length: 2.78; carapace length: 1.36; carapace width: 1.16; carapace height: 0.77; abdomen length: 1.42. CEPHALOTHORAX: Carapace hexagonal, wider medially, margin sinuous; pars cephalica dark reddish-orange, reticulate; pars thoracica reddish-orange, reticulate; cephalic groove well defined, with small pit; fovea broad, almost straight ( Fig. 57A View FIGURE 57 ); caput elevate ( Fig. 57C View FIGURE 57 ). Clypeus height: 0.07. Sternum elongated 0.89/0.67, orange, reticulate; posterior sigilla oval, median and anterior sigillae inconspicuous ( Fig. 57B View FIGURE 57 ). Labium dark reddish-orange without cuspule. Endites quadrangle; dark reddish-orange with six cuspules; serrula not observed. Chelicerae dark-reddish; promargin three teeth, denticles not observed; rastrellum with six spines. EYES: AME: 0.08; ALE: 0.1; PME: 0.05; PLE: 0.07; interdistances: AME: 0.04; AME-ALE: touching; PME: 0.19; PME-PLE: touching; LE: 0.02; ocular quadrangle: 0.38/0.36/0.15. ABDOMEN: Oval, dorsally light beige, light dark gray medially, ventrally light beige ( Fig. 56A, B View FIGURE 56 ). Spinnerets: median: 0.12; lateral spinnerets: 0.24/0.14/0.2. LEGS: Light orange-brown except femur I dark reddish-orange. Coxae I–II without inner short stiff setae. Metatarsi I, II with thick, half scopulae; tarsi I–II with thick complete scopulae ( Fig. 57D View FIGURE 57 ); III–IV no scopulae. Tarsal claw teeth (1/7) (2/7) (3/4) (5/2). LEGS MEASUREMENTS: I 4.51 (1.37/0.59/0.99/0.89/0.67); II 3.70 (1.10/0.46/0. 81/0.72/0.61); III 2.73 (0.82/0.32/0.47/0.61/0.51); IV 4.30 (1.27/0.48/1.00/0.91/0.64); leg formula: 1423. LEGS SPINATION: femur I, II, IV 4d, III (0); IV with 5 grouped pro-apical spines; patellae I, II, IV (0); III with 4p, 2r; tibia I 2v, II 2v; III 2v, 2vap, 1d, 1p; IV 1-1v, 2vap; metatarsus I (0); II 1-1v, 2vap; III 1-2-1d, 1r, 1v, 2vap; IV 1v, 2vap; tarsus I–IV (0). GENITALIA: Palp measurements: 0.67/0.32/0.58/0.29; bulb 0.29 long, 0.15 wide. Femur slightly longer than tibiae, darker than other palpal segments; cymbium with four apical spines ( Fig. 58A, B View FIGURE 58 ); bulb globose; embolus short with strongly bent tip ( Fig. 58C–E View FIGURE 58 ).