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461 results for “harvestmen”
Figs 16-19 in An ancient radiation: Ortholasmatine harvestmen in Asia - a new genus, three new species and a revision of the known species (Arachnida, Opiliones, Nemastomatidae)
Figs 16-19. Asiolasma angka. (16) Body of male in dorsal view. (17) Body of female in dorsal view. (18) Prosoma of male in dorsal view. (19) Opisthosoma of male in dorsal view. Photographs by J. Schmidt.
Figs 2-5 in An ancient radiation: Ortholasmatine harvestmen in Asia - a new genus, three new species and a revision of the known species (Arachnida, Opiliones, Nemastomatidae)
Figs 2-5. Cladolasma parvulum. (2) Body of male in dorsal view. (3) Body of female in dorsal view. (4) Prosoma of male in dorsal view. (5) Opisthosoma of male in dorsal view. Photographs by J. Schmidt.
Figs 6-15 in An ancient radiation: Ortholasmatine harvestmen in Asia - a new genus, three new species and a revision of the known species (Arachnida, Opiliones, Nemastomatidae)
Figs 6-15. Cladolasma parvulum, male (6-12, 14), female (13, 15). (6) Glans penis in lateral view. (7) Same in dorsal view. (8) Same in ventral view. (9) Truncus penis in lateral view. (10) Same in dorsal view. (11) Same in ventral view. (12) Right chelicera of male in prolateral view. (13) Same of female. (14) Right pedipalp of male in prolateral view. (15) Same of female. Scales: 0.25 mm (9-11); 0.1 mm (6-8); 0.3 mm (12-15).
Fig. 1 in An ancient radiation: Ortholasmatine harvestmen in Asia - a new genus, three new species and a revision of the known species (Arachnida, Opiliones, Nemastomatidae)
Fig. 1. Distributional records of ortholasmatine species in East and Southeast Asia. (1) Asiolasma billsheari sp. nov., China, Gansu, Qinling range. (2) A. juergengruberi sp. nov., China, Yunnan, above Lugu Hu. (3) Same species as before, China, north of Lijiang. (4) A. ailaoshan, China, Yunnan, Ailao Shan. (5) A. damingshan, China, Guangxi, Daming Shan. (6) A. schwendingeri sp. nov., Vietnam, Mt Ba Vi. (7) A. angka, Thailand, Doi Inthanon. (8) Dendrolasma parvulum, Japan, Shikoku Island.
Data from: Correlated evolution of sexual dimorphism and male dimorphism in a clade of neotropical harvestmen
Secondary sexual traits increase male fitness, but may be maladaptive in females, generating intralocus sexual conflict that is ameliorated through sexual dimorphism. Sexual selection on males may also lead some males to avoid expenditure on secondary sexual traits and achieve copulations using alternative reproductive tactics (ARTs). Secondary sexual traits can increase or decrease fitness in males, depending on which ART they employ, generating intralocus tactical conflict that can be ameliorated through male dimorphism. Due to the evolutionary forces acting against intralocus sexual and tactical conflicts, male dimorphism could coevolve with sexual dimorphism, a hypothesis that we tested by investigating these dimorphisms across 48 harvestman species. Using three independently derived phylogenies we consistently found that the evolution of sexual dimorphism was correlated with that of male dimorphism, and suggest that the major force behind this relationship is the similarity between selection against intralocus sexual conflict and selection against intralocus tactical conflict. We also found that transitions in male dimorphism were more likely in the presence of sexual dimorphism, indicating that if a sexually selected trait arises on an autosome and is expressed in both sexes, its suppression in females probably evolves earlier than its suppression in small males that adopt ARTs.
FIGURE 8. A in Descriptions of three new species of the harvestmen genus Pseudogagrella (Opiliones: Sclerosomatidae: Gagrellinae) from Taiwan, supported by morphological and molecular evidence
FIGURE 8. A map of the collection sites of the genus Pseudogagrella in Taiwan.
Fig. 4 in First record of the expansive harvestmen Dicranopalpus ramosus (Simon, 1909) (Arachnida: Opiliones) in Poland
Fig. 4. Male of Dicranopalpus ramosus on the wall. Photo by T. Rutkowski
Fig. 3 in First record of the expansive harvestmen Dicranopalpus ramosus (Simon, 1909) (Arachnida: Opiliones) in Poland
Fig. 3. Male of Dicranopalpus ramosus. Photo by M. Szewczyk.
Figure 5 in Morphology-based cladistics splinters the century-old dichotomy of the pied harvestmen (Arachnida: Gonyleptoidea: Cosmetidae)
Figure 5. Examples of some characters defined by us and used in the present phylogenetic analysis.
Figure 8–13 in What do we know about the harvestmen (Arachnida: Opiliones) from Paraná State, Brazil? A diversity hotspot in the southern Atlantic Forest
Figure 8–13. Key contributors (8, 10, 12) to the knowledge of the Opiliones from Paraná and species associated to them (9, 11, 13): (8) Carl-Friedrich Roewer unknown date (from Kraus 1963); (9) Geraeocormobius armatus, from Roewer 1913, BHL public domain; (10) Helia Eller Monteiro Soares in 1992 (Photo courtesy by Ricardo Pinto-da-Rocha) and Benedicto Abílio Monteiro Soares ca. 1950 (Photo courtesy José Robert Pujol Luz); (11) Neopachylus imaguirei, from Soares & Soares 1947b, BHL CC BY-NC-SA 4.0; (12) Gerdt Hatschbach in occasion of his 89th birthday in 2012 (Photo by Irene Roiko/SMCS); (13) Promitobates hatschbachi (Photo by APP, specimen from Piraquara, Paraná, 2020).
Figures 6–7 in What do we know about the harvestmen (Arachnida: Opiliones) from Paraná State, Brazil? A diversity hotspot in the southern Atlantic Forest
Figures 6–7. Heatmaps of 15th classes with density of literature records of species of Opiliones from Paraná State, Brazil: (6) geohash density map with the equal count (quartile); (7) graduated density map with continuous mode.
Figure 1 in The Iberian Peninsula: ancient history of a hot spot of mite harvestmen (Arachnida: Opiliones: Cyphophthalmi: Sironidae) diversity
Figure 1. Satellite view centered on the Iberian Peninsula showing the known localities for the Iberian species of Cyphophthalmi. Type localities are identified with the bold font. An asterisk denotes the localities of the specimens used in the molecular study. Localities identified as 'Paramiopsalis sp.' are based on specimens listed by Rambla & Fontarnau (1984) as Paramiopsalis ramulosus, but have not been examined by the authors. The type locality for Parasiro coiffaiti is indicated with a question mark because the locality listed for the type material is not from the Girona Province (see Results).
Figure 6 in The Iberian Peninsula: ancient history of a hot spot of mite harvestmen (Arachnida: Opiliones: Cyphophthalmi: Sironidae) diversity
Figure 6. Paramiopsalis eduardoi sp. nov., scanning electron microgarphs of a male paratype. A, right chelicera. B, cheliceral fingers. C, left pedipalp. D, pedipalpal claw.
Figures 50- 51 from: Shear W (2010) New species and records of ortholasmatine harvestmen from Mexico, Honduras, and the western United States (Opiliones, Nemastomatidae, Ortholasmatinae). ZooKeys 52: 9-45. https://doi.org/10.3897/zookeys.52.471
Figures 50- 51 - Photographs of bodies, dorsal views. 50 female Trilasma chipinquensis sp. n. 51 male Trilasma hidalgo sp. n.
Figures 2- 3 from: Shear W (2010) New species and records of ortholasmatine harvestmen from Mexico, Honduras, and the western United States (Opiliones, Nemastomatidae, Ortholasmatinae). ZooKeys 52: 9-45. https://doi.org/10.3897/zookeys.52.471
Figures 2- 3 - Scanning electron micrographs of Ortholasma colossus sp. n., dorsal views. 2 male 3 female.
Figures 48- 49 from: Shear W (2010) New species and records of ortholasmatine harvestmen from Mexico, Honduras, and the western United States (Opiliones, Nemastomatidae, Ortholasmatinae). ZooKeys 52: 9-45. https://doi.org/10.3897/zookeys.52.471
Figures 48- 49 - Photographs of bodies, dorsal views. 48 male Trilasma tempestado sp. n. 49 male Trilasma tropicum sp. n.
Figures 30-41 from: Shear W (2010) New species and records of ortholasmatine harvestmen from Mexico, Honduras, and the western United States (Opiliones, Nemastomatidae, Ortholasmatinae). ZooKeys 52: 9-45. https://doi.org/10.3897/zookeys.52.471
Figures 30-41 - Penes. 30, 31 Ortholasma colossus 30 dorsal view 31 glans 32, 33 Trilasma ranchonuevo sp. n. 32 dorsal view 33 glans 34, 35 Trilasma trispinosum sp. n.34 dorsal view 35 glans 36, 37 Trilasma tempestado sp. n. 36 dorsal view 37 glans 38, 39 Trilasma tropicum sp. n. 38 dorsal view 39 glans 40, 41 Trilasma hidalgo sp. n.40 lateral view 41 glans. All drawings to the same scale; penis of Ortholasma colossus is 1 mm long.
Figures 46- 47 from: Shear W (2010) New species and records of ortholasmatine harvestmen from Mexico, Honduras, and the western United States (Opiliones, Nemastomatidae, Ortholasmatinae). ZooKeys 52: 9-45. https://doi.org/10.3897/zookeys.52.471
Figures 46- 47 - Photographs of bodies, dorsal views. 46 male Trilasma petersprousei sp. n.47female Trilasma ranchoneuvo sp. n.
Figure 1 from: Shear W (2010) New species and records of ortholasmatine harvestmen from Mexico, Honduras, and the western United States (Opiliones, Nemastomatidae, Ortholasmatinae). ZooKeys 52: 9-45. https://doi.org/10.3897/zookeys.52.471
Figure 1 - Ortholasma colossus sp. n., live female specimen in habitat. Photo courtesy of Marshal Hedin.
Figures 44- 45 from: Shear W (2010) New species and records of ortholasmatine harvestmen from Mexico, Honduras, and the western United States (Opiliones, Nemastomatidae, Ortholasmatinae). ZooKeys 52: 9-45. https://doi.org/10.3897/zookeys.52.471
Figures 44- 45 - Scanning electron micrographs of female Trilasma tempestado sp. n. 44 hood, dorsal view 45 body, dorsal view.
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