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Harvestmen (Opiliones) of Canada

Harvestmen (Opiliones) of Canada. Robert Holmberg Centre for Science Athabasca University Athabasca, Alberta T9S 3A3, Canada E-mail: robert@athabasu.ca. 17 th International Congress of Arachnology, Brazil, 2007. Harvestmen as They Appear to Most People. Characteristics of Opiliones.

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Harvestmen (Opiliones) of Canada

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  1. Harvestmen (Opiliones) of Canada Robert Holmberg Centre for Science Athabasca University Athabasca, Alberta T9S 3A3, Canada E-mail: robert@athabasu.ca 17th International Congress of Arachnology, Brazil, 2007

  2. Harvestmen as They Appear to Most People

  3. Characteristics of Opiliones • prosoma and opisthosoma broadly fused • no venom nor silk glands • no extra-oral digestion • tracheal respiration • 3rd largest arachnid order Palpatores, Phalangiidae: Rilaena triangularis from Hillyard & Sankey 1989

  4. Characteristics of Opiliones • 2 medial eyes • palps leg-like, swollen, or raptorial • chelate chelicerae Palpatores, Sabaconidae: Sabacon #1 by Nadine Duperre

  5. Characteristics of Opiliones • pair of scent glands Palpatores, Phalangiidae: Phalangium opilio; from Holmberg 1970

  6. Characteristics of Opiliones • sperm transfer by penis • females with ovipositor Palpatores, Phalangiidae:Oligolophus tridensfrom V. Silhavy 1956

  7. Opiliones of Canada – West Coast & Mountains Laniatores

  8. Taracus sp. – very large chelicerae Photo: D.J. Buckle

  9. Opiliones of Canada – West Coast & Mountains (continued)

  10. Dendrolasma mirabilis – hood area Photo by Aldo Pelegrin

  11. Opiliones of Canada – West Coast & Mountains (continued)

  12. Kakwa Wildland Park, Alberta, July 2006

  13. Liopilio glaber and habitat

  14. Opiliones of Canada – West Coast & Mountains (concluded)

  15. Nelima paessleri – overwintering behaviour From Holmberg et al., 1984.

  16. Opiliones of Canada – Central Plains

  17. Distributions & Habitats:patchy knowledge for most species Palpatores, Sclerosomatidae Togwoteeus biceps; from Holmberg & Cokendolpher, 1997

  18. Opiliones of Canada – Great Lakes and East

  19. Opiliones of Canada – Great Lakes and East (continued)

  20. Opiliones of Canada – Great Lakes and East (continued)

  21. Opiliones of Canada – Great Lakes and East (concluded)

  22. Opiliones of Canada – Maritimes

  23. Species Introductions to Canada Female (above) and male (to the right) of Phalangium opilio Photo; D.J. Buckle

  24. Introductions from Europe Opilio parietinus female

  25. Opiliones of Canada – Maritimes (concluded)

  26. Opiliones of Canada – Northern Territories

  27. Distribution of Mitopus morio

  28. Known Species of Opiliones from Canada

  29. “Daddylonglegs of the Evening” by Salvador Dali Questions?

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