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159 results for “Cyrtaucheniidae”
Figure 15 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 15. Promyrmekiaphila gertschi from Ben Lomond, Santa Cruz County, California. A, pedipalp, retrolateral aspect. B, male leg I, retrolateral aspect. C, spermathecal receptula.
Figure 14 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 14. Aptostichus sp. burrow from Riverside County, Winchester, California. A, burrow closed with arrow indicating its location. B, same burrow opened.
Figure 13 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 13. Aptostichus atomarius from Los Angeles County, California, Chatsworth in CAS (A–D) and Aptostichus simus, male from Los Angeles County, California, Playa del Rey State Beach and female from the type locality San Diego County, Silverstrand State Beach (E–I). A, male leg I, retrolateral aspect. B, spermathecal receptula. C, cymbium and palpal bulb, retrolateral aspect. D, abdomen. E, male leg I, retrolateral aspect. F, male leg I, prolateral aspect. G, pedipalp, retrolateral aspect. H, spermathecal receptula. I, sternum and palpal endites.
Figure 11 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 11. Neoapachella rothi sp. nov. male HOLOTYPE (A–C) female paratype (D). A, leg I, retrolateral aspect. B, leg I, prolateral aspect. C, pedipalp, retrolateral aspect. D, spermathecal receptula.
Figure 9 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 9. Eucteniza rex burrow from Laredo, Texas excavated by W. Icenogle and bisected. A, lateral view with trapdoor open. B, top view with trapdoor closed.
Figure 1 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 1. Cladograms redrawn from Raven (1985). A, phylogeny of the Mygalomorphae. B, (inset) phylogeny of the Cyrtaucheniidae.
Figure 8 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 8. Eucteniza rex Chamberlin male holotype (A–D) and female paratypes (E). A, retrolateral aspect of leg I. B, prolateral aspect of leg I. C, retrolateral aspect of leg II. D, retrolateral aspect of pedipalp. E, spermathecal receptula.
Figure 5 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 5. Tree topology based on the morphological character set with all characters receiving equal weights. Strict consensus of seven equally parsimonious trees: 281 steps, CI = 0.35, RI = 0.64, RC = 0.22. Fifty percent majority rule bootstrap consensus; bootstrap/decay values are given for those nodes with bootstrap values greater than 50%.
Figure 3 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 3. Posterior lateral spinneret spigot types for select rastelloid taxa (scale bars = 0.1 mm). A, Kiama lachrymoides. B, Cyrtauchenius luridus Simon, 1881. C, Promyrmekiaphila gertschi. D, Acontius sp. E, Eucteniza rex. F, Neoapachella rothi. G, Rhytidicolus sp. H, Myrmekiaphila torreya. I, Ummidia sp.
Figure 4 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 4. Silk spigots on apicalmost article of posterior lateral spinnerets for select euctenizine taxa (scale bars = 0.1 mm). A, Aptostichus hesperus. B, Neoapachella rothi. C, Entychides arizonica. D, Eucteniza rex.
Figure 2 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 2. Reanalysis of Goloboff's (1993) data set of 71 morphological characters scored for 42 mygalomorph taxa using implied weights (k = 7; note that the topology is quite sensitive to concavity function constant). This is a strict consensus of 27 most parsimonious trees (236 steps, CI = 0.39, RI = 0.73). Filled circles indicate nodes that differ from Goloboff 's original analysis, cyrtaucheniid taxa are in grey shaded box. A summary and a brief explanation of the characters and their scorings are presented in Appendix 1.
Figure 6 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 6. Preferred tree topology based on morphological character set using implied weighting with k = 4 (283 steps, CI = 0.35, RI = 0.63, RC = 0.22, G fit = 50.45). Bootstrap/decay values are given for nodes with bootstrap values greater than 50% and/or decay values greater than 3 above the branch, branch numbers are given below.
Figure 7 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 7. Colour photographs of live Euctenizinae species. A, Eucteniza rex from Laredo, Texas. B, Aptostichus atomarius from Riverside County, California. C, Promyrmekiaphila gertschi from San Mateo County, California.
Figure 18 in Phylogeny and taxonomy of the genera of south-western North American Euctenizinae trapdoor spiders and their relatives (Araneae: Mygalomorphae, Cyrtaucheniidae)
Figure 18. Apomastus sp. burrow opening, from Orange County, California.
Data from: Phylogenetic reconsideration of Myrmekiaphila systematics with a description of the new trapdoor spider species Myrmekiaphila tigris (Araneae, Mygalomorphae, Cyrtaucheniidae, Euctenizinae)
The trapdoor spider genus Myrmekiaphila currently comprises 11 nominal species. A recent molecular phylogenetic evaluation of the group identified a number of problems with respect to how species and species groups were delineated by Bond and Platnick in their 2007 taxonomic revision of the genus. We report herein the discovery of a new species, Myrmekiaphila tigris sp. n. The phylogenetic position of the species is evaluated using a molecular phylogenetic approach based on a set of mtDNA markers. Our preferred phylogenetic hypothesis supports the recognition of a new species and further highlights the need to more carefully investigate species boundaries within the genus. These results further indicate that palpal bulb morphology is rapidly evolving and has likely been a contributing factor in rendering a number of species paraphyletic with respect to the molecular data.
FIGURE 7 in A taxonomic review of the trapdoor spider genus Promyrmekiaphila Schenkel (Araneae, Mygalomorphae, Cyrtaucheniidae, Euctenizinae)
FIGURE 7. Inferred mtDNA phylogeny for Promyrmekiaphila using Bayesian inference (redrawn from Stockman & Bond, 2007), demarcating the two morphologically distinct species: P. clathrata and P. winnemem sp. nov. Shaded boxes represent six ecologically non-interchangeable clades which may potentially be considered for species status sometime in the near future (see Stockman & Bond, 2007).
FIGURES 14–25 in A taxonomic review of the trapdoor spider genus Promyrmekiaphila Schenkel (Araneae, Mygalomorphae, Cyrtaucheniidae, Euctenizinae)
FIGURES 14–25. Promyrmekiaphila winnemem sp. nov. female (MY3053) from Swasey Dr., Shasta Co., CA (14– 24): Right palpal endite (14); right chelicerae (15); trichobothrium base, leg I (16); leg I tarsal organ (17); left pedipalp tarsal claw (18); left leg I superior tarsal claw (19); left leg IV superior tarsal claw (20); spinnerets (21); terminal segment of left posterior lateral spinneret (22); spigots on tip of left posterior lateral spinneret (23); left posterior median spinneret (24). Right palpal bulb, prolateral aspect, from a P. clathrata male (PR067) from Hopland Field Station, Mendocino Co., CA (25).
FIGURES 4–6 in A taxonomic review of the trapdoor spider genus Promyrmekiaphila Schenkel (Araneae, Mygalomorphae, Cyrtaucheniidae, Euctenizinae)
FIGURES 4–6. Distribution of Promyrmekiaphila in northern California. Circles represent known localities of P. c l a t h - rata, triangles represent P. winnemem sp. nov. Niche-based distribution models (redrawn from Stockman & Bond, 2007), indicating potentially suitable habitat for each species: P. winnemem (5); P. clathrata (6).
FIGURE 1–3 in A taxonomic review of the trapdoor spider genus Promyrmekiaphila Schenkel (Araneae, Mygalomorphae, Cyrtaucheniidae, Euctenizinae)
FIGURE 1–3. Promyrmekiaphila clathrata: live specimen in situ (1), burrow closed (2), burrow open (3).
FIGURES 8–13 in A taxonomic review of the trapdoor spider genus Promyrmekiaphila Schenkel (Araneae, Mygalomorphae, Cyrtaucheniidae, Euctenizinae)
FIGURES 8–13. Promyrmekiaphila winnemem sp. nov. female (MY3053) from Swasey Dr., Shasta Co., CA (8–11). Cephalothorax (8, 9, 10); leg I, prolateral aspect (11). Cephalothorax P. clathrata male (PR067) from Hopland Field Station, Mendocino Co., CA (12, 13).
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