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20 results for “Cyclocosmia”
Fig. 2 in Rare Spiders Of The Genus Cyclocosmia (Arachnida: Araneae: Ctenizidae) From Tropical And Subtropical China
Fig. 2. Cyclocosmia ricketti (Pocock, 1901): A, habitus of female; B, ocular area, dorsal view; C, abdomen, caudal view; D, same, lateral view; E, spermathecae, dorsal view. Scale bars: A, B, E = 1.0 mm, C-D = 2.0 mm.
Fig. 6. Cyclocosmia latusicosta, new species. A in Rare Spiders Of The Genus Cyclocosmia (Arachnida: Araneae: Ctenizidae) From Tropical And Subtropical China
Fig. 6. Cyclocosmia latusicosta, new species. A, ocular area, dorsal view, holotype; B, abdomen, caudal view, holotype; C, same, lateral view, holotype; D, posterior portion of opisthosoma, ventral view, holotype; E, left chelicera, prolateral view, holotype; F-J, spermathecae, dorsal view: F, holotype; G-J, paratypes. Scale bars: A, F-J = 1.0 mm, B-E = 2.0 mm.
Fig. 5 in Rare Spiders Of The Genus Cyclocosmia (Arachnida: Araneae: Ctenizidae) From Tropical And Subtropical China
Fig. 5. Cyclocosmia latusicosta, new species, paratype (SEM micrographs). A, detail of ribs; B, detail of inner side of rib angles showing two kinds of bristles; C, detail of long and smooth bristles; D, detail of bottlebrush-like bristles.
Species delimitation with limited sampling: an example from rare trapdoor spider genus Cyclocosmia (Mygalomorphae, Halonoproctidae)
<p>The outcome of species delimitation depends on many factors, including conceptual framework, study design, data availability, methodology employed, and subjective decision-making. Obtaining sufficient taxon sampling in endangered or rare taxa might be difficult, particularly when non-lethal tissue collection cannot be utilized. The need to avoid overexploitation of the natural populations may thus limit the methodological framework available for downstream data analyses and bias the results. We test species boundaries in rare North American trapdoor spider genus <em>Cyclocosmia</em> Ausserer (1871) inhabiting the Southern Coastal Plain biodiversity hotspot with the use genomic data and two multispecies coalescent model methods. We evaluate the performance of each methodology within a limited sampling framework. To mitigate the risk of species over-splitting, common in taxa with highly structured populations, we subsequently implement a species validation step via genealogical diversification index (gdi), which accounts for both genetic isolation and gene flow. We delimited eight geographically restricted lineages within North American <em>Cyclocosmia</em>, suggesting that major river drainages in the region are likely barriers to dispersal. Our results suggest that utilizing BPP in the species discovery step might be a good option for datasets comprising hundreds of loci, but fewer individuals, which may be a common scenario for rare taxa. However, we also show that such results should be validated via gdi, in order to avoid over-splitting.</p>
Fig. 4 in Rare Spiders Of The Genus Cyclocosmia (Arachnida: Araneae: Ctenizidae) From Tropical And Subtropical China
Fig. 4. Abdomen of Cyclocosmia latusicosta, new species, paratype, caudal view.
Fig. 1 in Rare Spiders Of The Genus Cyclocosmia (Arachnida: Araneae: Ctenizidae) From Tropical And Subtropical China
Fig. 1. Abdomen of Cyclocosmia ricketti (Pocock, 1901), caudal view.
Fig. 3 in Rare Spiders Of The Genus Cyclocosmia (Arachnida: Araneae: Ctenizidae) From Tropical And Subtropical China
Fig. 3. Burrow entrance and trapdoor of Cyclocosmia latusicosta, new species.
Species delimitation with limited sampling: an example from rare trapdoor spider genus Cyclocosmia (Mygalomorphae, Halonoproctidae)
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FIGURE 8A–C in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 8A–C. Caudal view of male opisthosomal discs. A. Cyclocosmia latusicosta Zhu, Zhang & Zhang, 2006. B. Cyclocosmia subricketti sp. nov.. C. Cyclocosmia sublatusicosta sp. nov.
FIGURE 6A–D in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 6A–D. Cyclocosmia subricketti sp. nov. A. Female vulva, dorsal view. B. Left male pedipalp, prolateral view. C. Same, ventral view. D. Same, retrolateral view.
FIGURE 7A–C in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 7A–C. Dorsal view of male, eyes. A. Cyclocosmia latusicosta Zhu, Zhang & Zhang, 2006. B. Cyclocosmia sublatusicosta sp. nov. C. Cyclocosmia subricketti sp. nov.
FIGURE 5A–G in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 5A–G. Cyclocosmia subricketti sp. nov., female holotype (B, F–G) & male paratype (A, C–E). A. Male habitus, dosal view. B. Female habitus, dorsal view. C. Left male pedipalp, prolateral view. D. Same, ventral view. E. Same, retrolateral view. F. Female vulva, dorsal view. G. Opisthosomal disc of female, caudal view.
FIGURE 4A–D in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 4A–D. Cyclocosmia sublatusicosta sp. nov. A. Opisthosomal disc, caudal view. B. Right male pedipalp, prolateral view. C. Same, ventral view. D. Same, retrolateral view.
FIGURE 2A–D in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 2A–D. Cyclocosmia latusicosta Zhu, Zhang & Zhang, 2006. A. Left male pedipalp, prolateral view. B. Same, ventral view. C. Same, retrolateral view. D. Female vulva, dorsal view.
FIGURE 1A–G in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 1A–G. Cyclocosmia latusicosta Zhu, Zhang & Zhang, 2006, male (A–E) and female (F–G). A. Male habitus, dorsal view. B. Same, ventral view. C. Left male pedipalp, prolateral view. D. Same, ventral view. E. Same, retrolateral view. F. Female vulva, dorsal view. G. Opisthosomal disc of female, caudal view.
FIGURE 3A–E in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 3A–E. Cyclocosmia sublatusicosta sp. nov., male holotype. A. Male habitus, dorsal view. B. Same, ventral view. C. Right male pedipalp, prolateral view. D. Same, ventral view. E. Same, retrolateral view.
Figure 1 from: Xu X, Xu C, Li F, Pham DS, Li D (2017) Trapdoor spiders of the genus Cyclocosmia Ausserer, 1871 from China and Vietnam (Araneae, Ctenizidae). ZooKeys 643: 75-85. https://doi.org/10.3897/zookeys.643.10797
Figure 1 - Cyclocosmia ricketti (Pocock, 1901) A habitat B–D habitus of female (XUC-2013-013) E abdomen, lateral view F posterior portion of opisthosoma, ventral view, showing spinnerets G female genitalia (XUC-2013-013), dorsal view H female genitalia (tianzishan-2016), dorsal view I showing opisthosomal disc in plugging position (XUC-2013-013) J–L abdomen, caudal view (J XUC-2013-013 K Tianzishan-2016 L C-2016-001). Scale bars 0.5 mm.
Figure 2 from: Xu X, Xu C, Li F, Pham DS, Li D (2017) Trapdoor spiders of the genus Cyclocosmia Ausserer, 1871 from China and Vietnam (Araneae, Ctenizidae). ZooKeys 643: 75-85. https://doi.org/10.3897/zookeys.643.10797
Figure 2 - Cyclocosmia latusicosta Zhu, Zhang & Zhang, 2006 A habitus of female, lateral view (17-I-2013) B posterior portion of opisthosoma, ventral view, showing spinnerets C abdomen, lateral view (XUC-2016-017) D–I abdomen, caudal view (D 17-I-2013 E XUC-2016-017 F LH-2016-002 G LH-2016-003 H LH-2016-004 I LH-2016-005) J–N female genitalia (J 17-I-2013 K XUC-2016-017 L LH-2016-003 M LH-2016-004 N LH-2016-005), dorsal view. Scale bars A, B, D 1mm, J–N 0.5 mm.
Figure 3 from: Xu X, Xu C, Li F, Pham DS, Li D (2017) Trapdoor spiders of the genus Cyclocosmia Ausserer, 1871 from China and Vietnam (Araneae, Ctenizidae). ZooKeys 643: 75-85. https://doi.org/10.3897/zookeys.643.10797
Figure 3 - Cyclocosmia liui Xu, Xu & Li sp. n. A habitus of female (C-XUC-2015) B abdomen, lateral view C abdomen, caudal view D posterior portion of opisthosoma, ventral view, showing spinnerets E sternum, ventral view F female genitalia, ventral view. Scale bars A–E 1 mm, F 0.5 mm.
FIGURE 9A–G. Habitus and biological photos. A in On three species of the trapdoor spider Genus Cyclocosmia from China (Araneae, Halonoproctidae)
FIGURE 9A–G. Habitus and biological photos. A. Male of Cyclocosmia subricketti sp. nov. (freshly dead beside trap), caudal view. B. Adult female of Cyclocosmia latusicosta Zhu, Zhang & Zhang, 2006, dorsal view. C. Burrow of C. latusicosta in aquarium. D. Female C. latusicosta preying on Tenebrio larva. E. Subadult male of C. latusicosta, showing bulbed pedipalpal cymbium. F. Female C. latusicosta waiting for prey. G. Subadult C. latusicosta preying on cockroach (A, photographed by Lu- Yu Wang. C–G, photographed by Ye-Jie Lin).
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