[Odonata-l] water mites on exuviae

Dennis Paulson dennispaulson at comcast.net
Mon Jun 12 20:08:44 PDT 2017

Thanks, David. That’s especially interesting, as the assumption was that the mites would die on an exuvia with no hemolymph-full host on which to feed. It may be we still have a lot to learn about them, although they have been pretty well studied.


On Jun 12, 2017, at 7:28 PM, DAVID ALLAN FITCH <dallanfitc at aol.com> wrote:

> I brought back some Boyeria exuvia from Spain in 2005, and my luggage with my binoculars and the vial of exuvia got misrouted on my way home.  I was concerned that customs officials might find these and object that I had not declared I was bringing "insects" into the country - but I reasoned that exuvia aren't insects,  any more than importing  a cast off suit of clothes would be importing a human being.
> When the vial appeared, several mites had hatched and were cruising around inside the vial, leaving trails of spider-thread-like filaments.  "No problem, smuggler buddy," Mike Veit pointed out to me.  "Those may be arthropods but they're not insecta."
> David Allan Fitch, Attorney at Law
> Law Offices
> 33 Bedford St., Suite 9
> Lexington, MA  02420
> tel 781-861-1000   
> On Monday, June 12, 2017 Dennis Paulson <dennispaulson at comcast.net> wrote:
> Hello, all.
> I was just reading a paper by Andrzej Zawal (Zawal, A. 2006. Phoresy and parasitism: water mite larvae of the genus Arrenurus (Acari: Hydrachnidia) on Odonata from Lake Binowskie (NW Polan). Biological Letters 2006, 43(2): 257-276.
> In this he describes finding many mites on exuviae of 9 species of odonates, and this made me realize I had never seen mites on exuviae, although I have collected many species of them from many areas. Is this something that others have seen frequently or ever? Perhaps they are small enough that I just miss them, but I notice that Corbet (1999) made no mention of this.
> Corbet also stated that mite parasitism is equal on the two sexes, but Zawal claimed that he typically found more of them on female larvae/nymphs.
> I wonder if any of you can confirm these two claims from other parts of the world.
> Thanks!
> Dennis
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> Dennis Paulson
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Dennis Paulson
1724 NE 98 St.
Seattle, WA 98115
dennispaulson at comcast.net

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