[Odonata-l] mystery egg masses

[Jim Markowich]

Just want to say that this kind of photo reference is of great help to those of us who remain perpetual but fascinated dilettantes. If anyone has similar photos of egg masses and can upload them, it goes a long way toward educating... the masses (pun suddenly intended).

Thanks Kathy and Dave!
  ----- Original Message ----- 
  From: Kathy &/or Dave Biggs 
  To: Dennis Paulson 
  Cc: Odonata-l 
  Sent: Monday, February 09, 2009 5:32 PM
  Subject: Re: [Odonata-l] mystery egg masses


  Here's a pix of Epitheca canis egg mass we watched being laid.
  http://southwestdragonflies.net/caphotos/basketaileggstring.jpg
  Kathy Biggs

-- 
California Dragonflies	       http://www.sonic.net/dragonfly
Southwest Dragonflies	       http://southwestdragonflies.net/
Bigsnest Wildlife Pond	       http://www.bigsnestpond.net/
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Kathy and Dave Biggs	       bigsnest at sonic.net      707-823-2911
308 Bloomfield Rd.             Sebastopol, CA  95472 
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Dennis Paulson wrote: Hello, all. 


    Has anyone out there photographed or seen clearly the egg strings of any species of Epitheca (including Epicordulia and Tetragoneuria)? I have often seen the females ovipositing, but in water too deep for me to go look at the eggs. Judy Semroc, a colleague in Ohio, has sent me photos of linear masses of eggs that look much like odonate eggs looped around floating plant stems. But the masses are up to a couple of inches wide and two feet long, with thousands of eggs in them. The eggs are elongate and don't look like any amphibian eggs I have ever seen (most North American genera). I know female Epitheca sometimes gather at single localities and lay many eggs, but this seems a bit much. If you cut across one of these "strings," you would hit about 5-10 eggs. I have no idea what else they could be, and if anyone else knows, I would much appreciate the information. I can send the photos to anyone with special interest in this.


    Thanks for any help with this mystery.

    -----
    Dennis Paulson
    1724 NE 98 St.
    Seattle, WA 98115
    206-528-1382
    dennispaulson at comcast.net






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