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135 results for “Mygalomorph”
FIGURE 4 A–H in Records and redescription of a mygalomorph spider genus ignored for over 100 years with a new species: the genus Atmetochilus Simon, 1887 (Araneae Nemesiidae) in Thailand
FIGURE 4 A–H. Atmetochilus songsangchotei sp. nov., male. A–F. Holotype (ARA-2017-116). A–C. Palpal tibia and tarsus, retrolateral, ventral and prolateral view; D–F. Tibia, metatarsus and tarsus I showing tibial spur, prolateral, retroventral and retrolateral views; G–H. Male paratype (ARA-2017-120), tibial spur, retrolateral view.
FIGURE 6 A–D in Records and redescription of a mygalomorph spider genus ignored for over 100 years with a new species: the genus Atmetochilus Simon, 1887 (Araneae Nemesiidae) in Thailand
FIGURE 6 A–D. Atmetochilus fossor female neotype (ARA-2018-132). A. Habitus; A dorsal (left), ventral (right); B. Carapace; C. Eye tubercle; D. Maxillae & labium.
Data from: Crossing the uncrossable: novel trans-valley biogeographic patterns revealed in the genetic history of low dispersal mygalomorph spiders (Antrodiaetidae, Antrodiaetus) from California
Antrodiaetus riversi is a dispersal-limited, habitat specialized mygalomorph spider species endemic to mesic woodlands of northern and central California. Here we build upon prior phylogeographic research using a much larger geographic sample and include additional nuclear genes, providing more detailed biogeographic insights throughout the range of this complex. Of particular interest is the uncovering of unexpected and replicated trans-valley biogeographic patterns, where in two separate genetic clades western haplotypes in the California south Coast Ranges are phylogenetically closely-related to eastern haplotypes from central and northern Sierran foothills. In both instances, these trans-valley phylogenetic patterns are strongly supported by multiple genes. These western and eastern populations are currently separated by the Central Valley, a well-recognized modern-day and historical biogeographic barrier in California. For one clade the directionality is clearly northeast to southwest, and all available evidence is consistent with a jump dispersal event estimated at 1.2-1.3 million years ago. During this time period, paleogeographic data indicate that northern Sierran rivers emptied to the ocean in the south Coast Ranges, rather than at the San Francisco Bay. For the other trans-valley clade genetic evidence is less conclusive regarding the mechanism and directionality of biogeographic exchange, although the estimated timeframe is similar (approximately 1.8 Ma). Despite the large number of biogeographic studies previously conducted in central California, to the best of our knowledge no prior studies have discussed or revealed a northern Sierran to south Coast Range biogeographic connection. This uniqueness may reflect the low-dispersal biology of mygalomorph spiders, where "post-event" gene exchange rarely erases historical biogeographic signal.
FIGURES 53–54 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 53–54. Dorsal view of seminal receptacles. 53, Antrodiaetus effeminatus n. sp.; 54, Antrodiaetus pacificus (Simon). Scales = 0.01 mm in 0.001 mm divisions.
FIGURES 47, 48. Male left leg I in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 47, 48. Male left leg I, prolateral view of tibia, metatarsus, tarsus. 47, Antrodiaetus occultus Coyle; 48, Antrodiaetus pugnax (Chamberlin). Scale line = 0.5 mm.
FIGURES 42–45. Male left tibia I and metatarsus I. 42–43, Antrodiaetus effeminatus n in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 42–45. Male left tibia I and metatarsus I. 42–43, Antrodiaetus effeminatus n. sp. (42, prolateral view; 43, ventral view). 44–45, Antrodiaetus metapacificus n. sp. (44, prolateral view; 45, ventral view). Scales = 0.5 mm in 0.1 mm divisions.
FIGURES 38–41. Male left tibia I and metatarsus I. 38–39 Antrodiaetus ashlandensis n in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 38–41. Male left tibia I and metatarsus I. 38–39 Antrodiaetus ashlandensis n. sp. (38, prolateral view; 39, ventral view). 40–41, Antrodiaetus coylei n. sp. (40, prolateral view; 41, ventral view). Scales = 0.5 mm in 0.1 mm divisions.
FIGURES 34–37 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 34–37. Ectal view of male left chelicera. 34, Antrodiaetus ashlandensis n. sp.; 35, Antrodiaetus coylei n. sp.; 36, Antrodiaetus effeminatus n. sp.; 37, Antrodiaetus metapacificus n. sp. Scale lines = 0.5 mm.
FIGURES 49–52 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 49–52. Prolateral view of entire palp (left) and view of tip after palp rotated 90° on longitudinal axis of distal half of inner conductor sclerite. 49, Antrodiaetus ashlandensis n. sp.; 50, Antrodiaetus coylei n. sp.; 51, Antrodiaetus effeminatus n. sp.; 52, metapacificus n. sp. Scale lines = 0.1 mm.
FIGURES 22–33 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 22–33. Genital plates of males. 22–23, Antrodiaetus ashlandensis n. sp.; 24–25, Antrodiaetus coylei n. sp.; 26–27, Antrodiaetus effeminatus n. sp.; 28–29, Antrodiaetus metapacificus n. sp.; 30, Antrodiaetus montanus (Chamberlin & Ivie); 31, Antrodiaetus occultus Coyle; 32, Antrodiaetus pacificus (Simon); 33, Antrodiaetus pugnax (Chamberlin). Inserts emphasize sclerotized regions. Scale line = 0.5 mm.
FIGURES 16–21 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 16–21. Characters of Mecicobothriidae and Antrodiaetidae. 16, Hexura rothi Gertsch & Platnick (male: 16, ventral view of spinnerets). 17–18, Atypoides gertschi Coyle (male: 17, dorsolateral view of chelicerae; 18, ventral view of spinnerets, arrow indicates third spinneret). 19– 20, Antrodiaetus ashlandensis n. sp. (male: 19, dorsolateral view of chelicerae; 20, ventral view of spinnerets). 21, Antrodiaetus montanus (Chamberlin & Ivie) (male: dorsolateral view of chelicerae, insert shows dorsal view of chelicera with even coat of setae on middle portion). Not to scale.
FIGURES 12–15 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 12–15. Dorsal view of male body. 12, Antrodiaetus coylei n. sp.; 13, Antrodiaetus effeminatus n. sp.; 14, Antrodiaetus metapacificus n. sp.; 15, Antrodiaetus pacificus (Simon). Not to scale; see text for approximate sizes of the different species. Arrows indicate sclerotized patches.
FIGURES 8–11 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURES 8–11. Dorsal view of male body. 8, Microhexura idahoana Chamberlin & Ivie (note spur on tibia I); 9, Hexura rothi Gertsch & Platnick; 10, Atypoides gertschi Coyle; 11, Antrodiaetus ashlandensis n. sp. Not to scale; see text for approximate sizes of the different species. Arrows indicate sclerotized patches.
FIGURE 7 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURE 7. Abundance of adult male Antrodiaetus spiders collected in pitfall traps from southwestern Oregon.
FIGURE 5 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURE 5. Abundance of (male, female and immature) Hexura rothi Gertsch & Platnick collected in pitfall traps from western Siskiyou Mountains during 2001.
FIGURE 4 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURE 4. Map of southwestern Oregon (insert shows position of region within state) showing the distribution of Antrodiaetus pacificus (Simon) (circles) and Antrodiaetus pugnax (Chamberlin) (diamonds). Symbols from this study are closed whereas those recorded by Coyle (1971) are open.
FIGURE 6 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURE 6. Abundance of (male, female and immature) Atypoides gertschi Coyle collected in pitfall traps from eastern Siskiyou (during 1998) and southern Cascade (1999) Mountains.
FIGURE 3 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURE 3. Map of southwestern Oregon (insert shows position of region within state) showing the distribution of Antrodiaetus occultus Coyle (triangles), Antrodiaetus montanus (Chamberlin & Ivie) (diamond), Atypoides gertschi Coyle (squares), and Hexura rothi Gertsch & Platnick (circles). Symbols from this study are closed whereas those recorded by Coyle (1971) and Gertsch & Platnick (1979) are open.
FIGURE 2. Total monthly precipitation measured near the study sites during 1998, 1999 and 2001 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURE 2. Total monthly precipitation measured near the study sites during 1998, 1999 and 2001. Studies took place over the following time periods: 3 June–13 October 1998; 7 June–27 September 1999; 11 June–9 October 2001.
FIGURE 1 in Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species
FIGURE 1. Map of Oregon showing study areas within the Siskiyou and Cascade Mountains and a list of mygalomorph species found in each area [relief map modified from: http:// www.flag.wr.usgs.gov/USGSFlag/Data/maps/Oregon.gif (accessed 31 August 2005)]. Insert shows position of region within the USA.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.