Review of the American genus Bolostromus Ausserer, 1875 with the description of fourteen new species (Araneae, Cyrtaucheniidae) Author Dupérré, Nadine 0000-0003-2195-878X n.duperre@leibniz-lib.de text Zootaxa 2023 2023-07-17 5317 1 1 88 http://dx.doi.org/10.11646/zootaxa.5317.1.1 journal article 57758 10.11646/zootaxa.5317.1.1 2ec8e36f-be42-4c2a-b488-0a8640f80ead 1175-5326 8153783 A88A6184-36E3-4FDD-9BE0-862EC7361ED7 Genus Bolostromus Ausserer, 1875 Type species. Bolostromus venustus Ausserer, 1875 . Diagnosis. Bolostromus are distinguished from other American Cyrtaucheniidae (sensus Montes de Oca et al. 2022 ) as such: eye group rectangular ( Figs 2A , 7A ) while about three times wider behind in Bolostromoides (see Schiapelli & Gerschmann 1945; pl II); from Acontius by labium subquadrate and presence of serrula ( Figs 30D, E ), serrula absent and labium longer than wide in the latter ( Raven 1985: 126 ). Description. Total length: male 2.03–14.01, female 4.57–16.06. CEPHALOTHORAX: Carapace longer than wide, rectangular to hexagonal; margin sinuous; smooth, rugose or reticulate; pars cephalica elevated ( Fig. 2C ), pars thoracica flat; cephalic groove shallow to deep, without pit ( Fig. 2C ) or with pit ( Fig. 25C , arrow); fovea strongly procurved to straight ( Figs 2A , 7A , 51A ). Sternum longer than wide ( Fig. 2B ), in some species considerably elongated ( Fig. 38B ) smooth or reticulate; sigillae present, posterior one round to oval, anterior and median one often inconspicuous ( Fig. 12B ). Labium without cuspule, as long as wide ( Fig. 10B ), or elongated ( Fig. 38B ). Endites with cuspules; serrula present ( Figs 30D, E ). Chelicerae with rastellum of 4–23 spines; chelicerae promarin with 6–7 teeth and groove with small denticles ( Figs 30B, C ); B. stridulator n. sp. with stridulatory organ ( Fig. 60D ). EYES: Eight eyes in two rows; PME the smallest; in some males eye region on a small mound ( Fig. 60C ); ocular quadrangle rectangular, sometimes slightly wider posteriorly ( Figs 51A , 57A ). LEGS: Tarsi I–II and metatarsi I–II with scopulae dense or thin ( Figs 2D , 5D ); femur IV with pro-apical spines; patella III with spines; males tibiae I with or without megaspine ( Figs 45D , 48D arrow); males metatarsi I sometimes with modified setae ( Figs 20A , 23D arrow); tarsal claw bipectinate, with 0–23 teeth; third claw present on all legs ( Fig. 31C, D ); leg formula 4123 or 1423. ABDOMEN: Oval to elongate; uniformly color or with pattern ( Figs 4A , 21A ). Natural History. Specimens were collected from 100m in coastal habitat to the Páramo habitat at 3952m . Female were mostly collected within burrows, most male were collected by pitfall traps, malaise traps or hand collected. Composition. Bolostromus busu n. sp. , B. devriesi n. sp. , B. epiphyticus n. sp. , B. fauna (Simon, 1889) , B. fonsecai n. sp. , B. gaujoni (Simon, 1889) , B. holguinensis Rudloff, 1996 , B. hubeni n. sp. , B. insularis ( Simon, 1892 ) , B. laheredia n. sp. , B. italoi n. sp. , B. losrios n. sp. , B. nischki n. sp. , B. panamanus (Petrunkevitch, 1925) , B. urku n. sp. , B. palenque n. sp. B. primus n. sp. , B. pristirana n. sp. , B. pulchripes (Simon, 1889) , B. riveti Simon, 1903 , B. stridulator n. sp. , B. valdivia n. sp. (female) and B. venustus Ausserer, 1875 . Distribution. Cuba , Dominican Republic , St. Vincent , Costa Rica , Panama , Venezuela , Colombia and Ecuador . Note. Bolostromus suspectus O. Pickard-Cambridge was described from a juvenile specimen from Uganda and is presumed misplaced ( WSC 2023 ).