109 research outputs found
Viracucha mammifer Arizala & Labarque & Polotow 2021, comb. nov.
No full textViracucha mammifer (Mello-Leitão, 1939) comb. nov. Acanthoctenus mammifer Mello-Leit „o, 1939: 528, figs 11–13 (male holotype from S„o Paulo, Brazil, deposited in IBSP 368, examined).— World Spider Catalog 2020. Note. The transference of Acanthoctenus mammifer to Viracucha is established by the following characters: embolus with laminated base and median apophysis massive (Mello-Leit„o, 1939: figs 11–13). Males of Acanthoctenus were here diagnosed by the short and cylindrical embolus and the elongated and thin median apophysis.Published as part of Arizala, Stephany, Labarque, Facundo Martín & Polotow, Daniele, 2021, Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae Acanthocteninae), pp. 1-55 in Zootaxa 4920 (1) on page 52, DOI: 10.11646/zootaxa.4920.1.1, http://zenodo.org/record/447145
The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae)
No full textLabarque, Facundo M., Ramírez, Martín J. (2012): The placement of the spider genus Periegops and the phylogeny of Scytodoidea (Araneae: Araneomorphae). Zootaxa 3312 (1): 1-44, DOI: 10.11646/zootaxa.3312.1.1, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.3312.1.
Description of a new Neotropical spider genus in the family Ctenidae Keyserling 1877 (Araneae: Lycosoidea) from the Brazilian Amazon rainforest
No full textPereira, Maria Paula, Labarque, Facundo, Polotow, Daniele (2020): Description of a new Neotropical spider genus in the family Ctenidae Keyserling 1877 (Araneae: Lycosoidea) from the Brazilian Amazon rainforest. Zootaxa 4890 (3): 375-396, DOI: 10.11646/zootaxa.4890.3.
Acanthoctenus lamarrei Arizala & Labarque & Polotow 2021, sp. nov.
No full textAcanthoctenus lamarrei sp. nov. Figs 10A, 42–43 Type material: male holotype from Playa Corona, near San Carlos [8°25’59.0”N, 80°00’21.7”W], Panama Province, Panama, 08.VIII.1983. H. & L. Levi coll., deposited in MCZ. Etymology. The specific name is a patronym in honor of the entomologist Greg P. A. Lamarre, in recognition of many contributions to the knowledge on Panamanian spiders and friendship to the first author. Diagnosis. Males of Acanthoctenus lamarrei sp. nov. (Figs 42 D–E, 43) resemble those of A. spinipes (Figs 15 D–E, 16A–B) by the median apophysis massive, the apex at least five times wider than the base, and RTA elongated, longer than wide. It can be distinguished by the embolus short, the apex ending at 12 o’clock and the base swollen at least four times the apex width, and RTA curved distally. A. spinipes presents an elongated embolus, the base slightly swollen starting at 9 o’clock and the apex ending at 2 o’clock, and RTA straight distally. Description. Male (holotype MCZ). Total length 9.37. Carapace 4.93 long and 4.33 wide. Clypeus 0.26 high. Eye diameters: AME 0.26, ALE 0.19, PME 0.36, PLE 0.49. Leg measurements: I: femur 6.75/ patella 2.53/ tibia 8.55/ metatarsus 8.25/ tarsus 2.29/ total 28.37; II: 6.65/ 2.54/ 6.38/ 6.59/ 1.97/ 24.13; III: 5.18/ 1.91/ 4.50/ 5.33/ 1.63/ 18.55; IV: 6.70/ 1.96/ 6.10/ 8.46/ 2.71/ 25.93. Leg formula 1423. Leg spination: tibia I and II v-2-2-2-2-2-2-2-2-2, p-1-0-1-1, r-1-0-1-1-1, III v-2-2-2, p-1-1-1, r-0-0-1 and IV v-2-2-2, p-1-1-1, r-1-0-1-1; metatarsus I, II v2-2-2-2-2, p-1-0-1, r-1, III v-2-2-2, p-1-0-1, r-1-1, IV v2-0-1-1-1, p1-1-1, r-1-0-1-1. Palp (Figs 42 D–E, 43): tibia shorter than cymbium, slightly curved; RTA elongated and sinuous; cymbium elongated and with retrobasal projection; embolus elongated but shorter than in most Acanthoctenus spp., cylindrical, and curved; conductor hyaline and following the tip of embolus; median apophysis laminar, elongated, narrow at the base and wider at the top, with a proapical hook. Female. Unknown. Distribution. Panama (Fig. 10A).Published as part of Arizala, Stephany, Labarque, Facundo Martín & Polotow, Daniele, 2021, Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae Acanthocteninae), pp. 1-55 in Zootaxa 4920 (1) on pages 44-46, DOI: 10.11646/zootaxa.4920.1.1, http://zenodo.org/record/447145
Predatoroonops stani Pereira & Labarque 2021, sp. nov.
No full textPredatoroonops stani sp. nov. Figures 1–4. Type material. Male holotype from Parque Nacional da Serra do Gandarela (-20.09975, -43.69151), Conceição do Rio Acima, Minas Gerais, Brazil, 10.XII.2017, Polotow, Labarque & Arizala coll., deposited in IBSP 256079. Etymology. The specific name honors Stanley “Stan” Winston, responsible for the visual effects in the movie “Predator” of 1987, a category in which the movie was nominated for an Oscar in 1988. Name is a noun in the genitive case. Diagnosis. Males of Predatoroonops stani sp. nov. resemble those of Predatoroonops anna Brescovit, Rheims & Bonaldo, 2012, by the presence of the subdistal apophysis of chelicerae (sa) slightly curved dorsally at its distal end (Fig. 3; Brescovit et al. 2012b: fig. 19), but can be distinguished by the presence of basal condyle apophysis of chelicerae (cb) (Fig. 3), absent in P. anna (Brescovit et al. 2012b: fig. 19), large and long triangular subdistal furrow (sf) (Fig. 1A), narrow in P. anna (Brescovit et al. 2012b: figs 203–205), and the short, strongly curved retrolaterally, distal apophysis of chelicerae (da) (Fig. 3), that is elongated and narrow in P. anna (Brescovit et al. 2012b: fig. 19). Description. Male (IBSP 256079). Total length: 2.14. Carapace: length 0.93, width 0.79. Eyes diameter: ALE 0.10, PLE 0.09, PME 0.11, ALE–ALE 0.10. Carapace pale orange, with brown stripes along the margin of cephalic area (Fig. 1B), anterolateral corners with sclerotized triangular projections (Figs 1A, 3A). Chelicerae brown with lighter and darker regions (Fig. 1A). Sternum, endites and labium yellow (Fig. 2E). Clypeus with tiny setae. Chelicerae anterior face with large triangular median and subdistal furrows (Figs 1A, 3A), subdistal apophysis squared, bifurcated at the retrolateral margin and rounded at the prolateral margin (Figs 1A, 3A). Opisthosoma dorsum white (Fig. 2A). Legs yellow, femur I 0.8 long. Leg spination: femur I v2-2, II v1-1-2; tibia I v2-2-2-2-2, II r1; v2-2-2-2-2, III v1-2, IV d1; r1; v1-1-1-1; metatarsi: I v2-2-2-2, II v2-2-2-2, III–IV v1-2. Male palp slightly sclerotized, cymbium fused with bulb presenting a clear suture in between, bulb burly, shorter than cymbium, subdistal laminar and hyaline process prolaterally, distal slender hyaline process retrolaterally, embolus absent (Fig. 2D). Coloration, proximal segments yellow; cymbium yellow, bulb whitish-yellow, prolateral process base whitish-yellow, retrolateral process base reddish-brown (Fig. 2D). Female. Unknown. Distribution. Known only from the city of Conceição do Rio Acima, Minas Gerais, Brazil (Fig. 4).Published as part of Pereira, Maria Paula & Labarque, Facundo Martín, 2021, A new species of the Goblin Spider genus Predatoroonops Brescovit, Rheims & Ott 2012 (Araneae, Dysderoidea: Oonopidae), with new records for the genus, pp. 395-400 in Zootaxa 4964 (2) on pages 397-398, DOI: 10.11646/zootaxa.4964.2.11, http://zenodo.org/record/470925
New species of Anaptomecus Simon, 1903 (Araneae: Sparassidae: Heteropodinae)
No full textGuala, Mariel E., Labarque, Facundo M., Rheims, Cristina A. (2012): New species of Anaptomecus Simon, 1903 (Araneae: Sparassidae: Heteropodinae). Zootaxa 3187: 43-53, DOI: 10.5281/zenodo.28001
Acanthoctenus torotoro Arizala & Labarque & Polotow 2021, sp. nov.
No full textAcanthoctenus torotoro sp. nov. Figs 4, 10, 48–49 Type material. Male holotype from Torotoro Canyon, Charcas, Potosí Department, 18°06’47.6”S, 65°46’28.24”W, Bolivia, 15.VII.2017, A. Anker & P.H. Martins coll., deposited in UFMG 22307. Etymology. The species name is a toponym in apposition referring to the type locality. It is a word in the Quechua language meaning “mud”. Diagnosis. Males of Acanthoctenus torotoro sp. nov. (Figs 48 D–E, 49) resemble those of A. manauara sp. nov. (Figs 44 D–E, 45A–B) by the palpal tibia elongated, at least 2.5 times longer than wide, and RTA elongated, longer than wide. It can be distinguished by the embolus straight, not bended basally. A. manauara sp. nov. presents a basally bended embolus. Description. Male (holotype UFMG 22307). Total length 8.32. Carapace 3.98 long and 3.34 wide. Clypeus 0.15 high. Eye diameters: AME 0.26, ALE 0.17, PME 0.27, PLE 0.35. Leg measurements: I: femur 6.51/ patella 2.01/ tibia 7.53/ metatarsus 6.78/ tarsus 2.00/ total 24.83; II: 5.37/ 1.99/ 5.16/ 4.94/ 1.58/ 19.04; III: 4.32/ 1.57/ 3.80/ 4.45/ 1.49/ 15.63; IV: 6.11/ 1.55/ 5.25/ 7.25/ 2.23/ 22.39. Leg formula 1423. Leg spination: tibia I and II v-2-2-2- 2-2-2-2-2-2, p-1-0-1-1, r-0-1-1-0, III v-2-2-2, p-1-1, r-1-1-1, IV v-2-2-2, p-1-1, r-1-1; metatarsus I, II v2-2-2-2-2, p-1-1, r-1, III v-2-2-2, p-1-1-1, r-1-1, IV v1-1-1-1-1, p1-1-, r-1-1-1. Palp (Figs 48 D–E, 49): tibia shorter than cymbium, slightly curved; RTA elongated with bifid tip; cymbium elongated and with retrobasal projection; embolus elongated, cylindrical, and bent; conductor hyaline and following the tip of embolus; median apophysis laminar, elongated, narrow at the base and wider at the top, with a proapical hook and retrolateral ridge. Female. Unknown. Distribution. Known only from the type locality in western Bolivia (Fig. 10B).Published as part of Arizala, Stephany, Labarque, Facundo Martín & Polotow, Daniele, 2021, Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae Acanthocteninae), pp. 1-55 in Zootaxa 4920 (1) on page 50, DOI: 10.11646/zootaxa.4920.1.1, http://zenodo.org/record/447145
FIGURE 26. Acanthoctenus plebejus Simon, 1906 in Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae Acanthocteninae)
No full textFIGURE 26. Acanthoctenus plebejus Simon, 1906, female holotype (MNHN AR5169). A, epigynum, ventral; B, internal genitalia, dorsal.Published as part of Arizala, Stephany, Labarque, Facundo Martín & Polotow, Daniele, 2021, Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae Acanthocteninae), pp. 1-55 in Zootaxa 4920 (1) on page 28, DOI: 10.11646/zootaxa.4920.1.1, http://zenodo.org/record/447145
Anaptomecus temii Jaeger & Rheims & Labarque 2009, sp. n.
No full text<i>Anaptomecus temii</i> sp. n. <p>urn:lsid:zoobank.org:act: C9786DE2-401A-4087-87D1-2D78D792F926</p> <p>Figs 100-101</p> <p> <b>Type material</b> . ♁ holotype from Panama, Panama Province, P. Nac. Altos de Campana, 1 hectare Pancoding inventory, [8°41’00.4” N, 79°55’47.4” W], 895 m, 14.–19. VI.2007, M. Arnedo, D. Dimitrov, G. Hormiga, F. Labarque, M. Ramírez leg., vou- cher codes SCU2NDH005, preparation codes FML-00605 (MACN 16834). Paratype: 1 ♁, same data as for holotype; voucher codes SCB1DGR001, preparation codes LNP-00397-398 (MCNB 2008-0987).</p> <p> <b>Etymology</b>. The specific name honours Temistocles “Temi” Tejedor, who provided logistic support to the PANCODING team during the fieldwork in Panama in June 2007 and 2008 that led to the discovery of this species. His hospitality and friendship were essential for the successful bioinventoring of the spiders and water beetles of the Panamanian cloud forests; name in genitive case.</p> <p> <b>Diagnosis</b>. Males: embolus emerging mesally with well developed teeth at base and a smooth lamina at the end, conductor reduced, RTA relatively close to cymbium (Figs 100-101).</p> <p> <b>Description</b>. Male (MACN 16834, holotype). Total length 10.87. Prosoma: 4.08 long, 2.92 wide. Opisthosoma: 6.79 long, 1.72 wide. Eye diameters and interdistances: AME 0.20, ALE 0.18, PME 0.16, PLE 0.18, AME–AME 0.12, AME–ALE 0.08, PME–PME 0.18, PME–PLE 0.22, AME–PME 0.26, ALE–PLE 0.24. Legs: I: femur 10.76, patella 1.80, tibia 12.22, metatarsus 12.71, tarsus 3.08, total 40.57; II: 10.11, 1.94, 11.57, 12.71, 2.96, 39.29; III: 6.79, 1.50, 7.35, 6.95, 1.96, 24.55; IV: 8.81, 1.60, 8.65, 9.70, 2.44, 31.2. Leg formula 1243. Spination: femur I–II: p1-1-1; d1-0-1; r1-1- 1; femur III: p1-1-1; r1-1-1; femur IV: p1-1-0; r1-0-0; tibia I–II: p1-1-0; d1-1-0; r1-1- 0; v2-2-0; tibia III–IV: p1-1-0; d0-1-0; r1-1-0; v2-2-0; metatarsus I–II: p1-0-0; r1-0-0; v2-2-0; metatarsus III: p1-1-0; r1-1-0; v2-2-0; metatarsus IV: p1-1-1; r1-1-1; v2-2-2.</p> <p>Colouration. Prosoma pale yellow with brown margins, anterior dots and fovea. Chelicerae pale yellow. Pedipalps and legs pale yellow with olive green markings at the base of the spines. Sternum, gnathocoxae and labium pale yellow. Opisthosoma pale orange, with three yellow and white large dots laterally.</p> <p>Variation. Males (n=2): total length 10.87-10.59; prosoma 4.08-3.76; femur I 11.25-10.76.</p> <p> <b>Distribution</b>. Eastern Panama.</p>Published as part of <i>Jaeger, Peter, Rheims, Cristina & Labarque, Facundo, 2009, On the huntsman spider genera Sparianthina Banks, 1929 and Anaptomecus Simon, 1903 from South and Central America (Araneae, Sparassidae), pp. 115-147 in ZooKeys 16 (16)</i> on pages 141-143, DOI: 10.3897/zookeys.16.236, <a href="http://zenodo.org/record/576479">http://zenodo.org/record/576479</a>
Acanthoctenus alux Arizala & Labarque & Polotow 2021, sp. nov.
No full textAcanthoctenus alux sp. nov. Figs 10A, 35–37 Acanthoctenus spinigerus —F.O Pickard-Cambridge 1902: 356, plate 33, fig. 12 (misidentification).— World Spider Catalog 2020. Acanthoctenus spiniger — Lehtinen 1967: 208, figs 414, 420 (misidentification).— World Spider Catalog 2020. Acanthoctenus spinipes —F.O Pickard-Cambridge, 1902: 356, plate 33, fig. 15 (misidentification).— World Spider Catalog 2020. Type material. Female holotype from Guatemala, 1930, Peckham coll., deposited in MNHN AR222; female paratype from Sabanetas, near Barberena [14°17’38.3”N, 90°17’22.1”W], Santa Rosa Department, Guatemala, deposited in MCZ. Etymology. The species name is derived from the Maya word Alux and means “sprite” or “spirit” in the Mayan mythological tradition, generally associated with natural features such as forests. Diagnosis. Females of Acanthoctenus alux (Figs 35, 36D, 37) resemble those of A. virginea stat. res., comb. nov. (Figs 32 C–D, 33C–D) by the median sector subpentagonal, and the lateral sectors’ anterior border straight, forming a 60° angle with the median sector’s longitudinal axis. It can be distinguished by the atrium subtriangular, and the copulatory ducts relatively smaller. A. virginea stat. res., comb. nov. presents a suboval, slightly sclerotized atrium, and relatively longer copulatory ducts. Description. Male. Unknown. Female (holotype MNHN AR222). Total length 10.94. Carapace 4.26 long, 4.33 wide. Clypeus 0.20 high. Eye diameters: AME 0.28, ALE 0.18, PME 0.37, PLE 0.39 Leg measurements: I: missing; II: femur 5.06/ patella 2.41/ tibia 5.68/ metatarsus 3.78/ tarsus 1.36/ total 18.29; III: 4.10/ 1.80/4.12/ 3.40/ 1.51/ 14.93; IV: 5.78/ 2.12/ 5.74/ 7.41/ 2.23/ 23.28. Leg spination: I absent, tibia II v-2-2-2-2-2-2-2-2-2, p-1-1-0-1-1, r-1-0-1-1-1, III and IV v-2-2-2, p-1-1, r-1-1; metatarsus II v-2-2-2-2-2, p-1-1, r-1 III v-2-2-2, p-1-1-1, r 1-1-1, IV v-1-1-1-1-1, p-1-1-1, r-1-1-1. Epigynum (Figs 35 A–B, 36D, 37A–B): median sector subpentagonal, short, wide anteriorly extending into the atrium, projected posteriorly; anterior border of the lateral sectors straight; atrium subtriangular; copulatory ducts S-shaped, small; spermathecae head quote-shaped, with apical glandular openings, spermathecae base curled; fertilization ducts tubular, slanting outwards. Variation. Two females: total body length 10.94–14.24, carapace length 4.26–6.18. Distribution. Guatemala (Fig. 10A).Published as part of Arizala, Stephany, Labarque, Facundo Martín & Polotow, Daniele, 2021, Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae Acanthocteninae), pp. 1-55 in Zootaxa 4920 (1) on pages 37-39, DOI: 10.11646/zootaxa.4920.1.1, http://zenodo.org/record/447145
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