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LinEpig

LinEpig. My Subfamily Album. Some very preliminary imaging of erigonine epigyna. My friend Elizabeth volunteers at the museum. One day she sent me some pictures of hahniids. “I took these through the eyepiece with my digital camera,” she wrote. Immediately I thought of. Linyphiidae.

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LinEpig

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  1. LinEpig My Subfamily Album

  2. Some very preliminary imaging of erigonine epigyna

  3. My friend Elizabeth volunteers at the museum. One day she sent me some pictures of hahniids...

  4. “I took these through the eyepiece with my digital camera,” she wrote.

  5. Immediately I thought of ... Linyphiidae.

  6. Linyphiidae • Small, diverse and problematic • Often considered hard to identify, especially the females • Worldwide, second in described species, but No. 1 by number of genera • Account for > ¼ of all spider species in the Midwest, and > 30% in Canada

  7. Agyneta barrowsi

  8. Female spider anatomy http://www.nmnh.si.edu/highlight/sem/highlight/spiders/spiders.htm

  9. Agyneta barrowsi

  10. Agyneta barrowsi A. barrowsi photo Chamberlin & Ivie 1944

  11. My Subfamily: Erigoninae The erigonines account for 90% of linyphiid diversity. In North America, there are 107 genera with 952 species.

  12. Female erigonines are the only North American spiders with no key to genus

  13. The liniphiid “flipbooks” Atlas of Southeastern Linyphiidae Atlas of Eastern North American Linyphiidae Atlas of North American Linyphiidae (?)

  14. CanonPowershot A 610 5.0 megapixel $129

  15. Microscopy equipment Olympus SZ-10 research stereo scope Q-Color 3 USB digital camera attachment using QI imaging camera (TWAIN) plug-in

  16. “My protocol” • Clean and distinct specimen • Clean alcohol, chilled • Fine black sand • Watch glass on a margarine lid • Minimize vibration • Work quickly before alcohol heats up

  17. Eperigone maculata (= Mermessus maculatus)

  18. Eperigone maculata (= Mermessus maculatus) LinEpig Crosby & Bishop 1928

  19. Eridantes erigonoides

  20. Eridantes erigonoides LinEpig Crosby & Bishop 1933

  21. Hypselistes florens

  22. Hypselistes florens LinEpig Crosby & Bishop 1933

  23. Hypselistes florens Atlas of Southeastern Linyphiidae, M Draney 2004

  24. Tapinocyba simplex

  25. Tapinocyba simplex LinEpig Crosby & Bishop 1933

  26. Erigone dentosa LinEpig Atlas of Southeastern Linyphiidae

  27. Spirembolus S. erratus S. hibernus S. novellus S. pusilus

  28. Picasa Google’s photo sharing site

  29. LinEpig

  30. Eperigone tridentata (= Mermessus tridentatus)

  31. Social networking Photo-sharing albums let us post, share and search across what are essentially our “microscope field notes.”

  32. Map Location

  33. Georeferencing

  34. Why do this? • Recognizable images of tiny specimens • Positive aid in identification • Reasonable time and resource expenditure • Readily sharable

  35. Frustrations • Images are a bit fuzzy, and glare-y • We have only imaged a small fraction of what’s out there

  36. What’s next • We think it should be possible to get much clearer definition by compositing even just 2-3 images. • We will be glad to receive any useful feedback. • We hope that some of our colleagues will be willing to lend us their ID’d erigonines long enough to have their pictures taken.

  37. Wishlist... Floricoumus rostratus Idionella formosa Origanates rostratus Paracornicularia bicapillata Pelecopsidis frontalis Sisicottus montigenus

  38. http://picasaweb.google.com/nina.sandlin/LinEpig Nina SandlinSpiders - ZoologyThe Field Museum1400 South Lake Shore Drive Chicago, IL 60605-2496 USA nsandlin@fieldmusuem.org

  39. Thanks • Petra Sierwald, Kevin Pitz, Elizabeth Simmons – Field Museum, Chicago • Michael Draney – UW Green Bay • Rod Crawford – Burke Museum, UW Seattle • Robert Edwards – Woods Hole, Mass. • Efrat Gavish – Mitrani Dept of Desert Ecology, Ben-Gurion University of the Negev, Israel

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