LinEpig
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LinEpig My Subfamily Album
description
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. - PowerPoint PPT Presentation
Transcript of 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.
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
Agyneta barrowsi
Female spider anatomy
http://www.nmnh.si.edu/highlight/sem/highlight/spiders/spiders.htm
Agyneta barrowsi
Agyneta barrowsi
A. barrowsi photo Chamberlin & Ivie 1944
My Subfamily: Erigoninae
The erigonines account for 90% of linyphiid diversity. In North America, there are 107 genera with 952 species.
Female erigonines are the only North American spiders with no key to genus
Atlas of Southeastern Linyphiidae
Atlas of Eastern North American Linyphiidae
Atlas of North American Linyphiidae (?)
The liniphiid “flipbooks”
CanonPowershot A 610
5.0 megapixel $129
Microscopy equipment
Olympus SZ-10 research stereo scope
Q-Color 3 USB digital camera attachment using QI imaging camera (TWAIN) plug-in
“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
Eperigone maculata(= Mermessus maculatus)
Eperigone maculata
LinEpig Crosby & Bishop 1928
(= Mermessus maculatus)
Eridantes erigonoides
Eridantes erigonoides
LinEpig Crosby & Bishop 1933
Hypselistes florens
Hypselistes florens
LinEpig Crosby & Bishop 1933
Hypselistes florens
Atlas of Southeastern Linyphiidae, M Draney 2004
Tapinocyba simplex
Tapinocyba simplex
LinEpig Crosby & Bishop 1933
Erigone dentosa
LinEpig Atlas of Southeastern Linyphiidae
Spirembolus
S. erratus S. hibernus
S. novellus S. pusilus
Picasa
Google’s photo sharing site
LinEpig
Eperigone tridentata(= Mermessus tridentatus)
Social networking
Photo-sharing albums let us post, share and search across what are essentially our “microscope field notes.”
Map Location
Georeferencing
Why do this?
• Recognizable images of tiny specimens
• Positive aid in identification
• Reasonable time and resource expenditure
• Readily sharable
Frustrations
• Images are a bit fuzzy, and glare-y
• We have only imaged a small fraction of what’s out there
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.
Wishlist...
Floricoumus rostratus Idionella formosa Origanates rostratus
Paracornicularia bicapillata Pelecopsidis frontalis Sisicottus montigenus
http://picasaweb.google.com/nina.sandlin/LinEpig
Nina SandlinSpiders - ZoologyThe Field Museum1400 South Lake Shore Drive Chicago, IL 60605-2496 USA [email protected]
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
