Observation 129408: Cordycipitaceae sensu lato
When: 2008-10-25
(32.3446° -89.9355° )
No herbarium specimen

Notes: This small jumping spider was found approximately 1.5 meters above the ground in the outer branches on the north side of a large cedar tree. The spider is approximately 5mm long. Please note the spider web “pad” that was presumably constructed before death and adhered the spider long after death.

Proposed Names

28% (1)
Recognized by sight
Used references: Lynette Schimming – http://bugguide.net/node/view/236691
56% (1)
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
it’s amazing that you found this tiny spider the first time round!
By: Debbie Viess (amanitarita)
2013-02-25 07:22:31 PST (-0800)

thanks for this fabulous first time post.

the photo is actually rather horrifying, if you can drum up empathy for that spider. I don’t care how alien his or her face…what a nightmare to have those fungi popping outta your arm joints while you might still have the ability to see ’em. Surely the spider could feel that fungal disturbance in the force long before that time.

the east coast is a hotbed for these insect eating fungi, but still, they are hardly obvious to most.

I would,
By: Jim Kramer (jlkramer)
2013-02-25 03:23:52 PST (-0800)

But I no longer live 30 feet away from that tree, and currently live several states away in a completely different climate. Granted there is a small cedar tree here…

If you find this again
By: Danny Newman (myxomop)
2013-02-24 19:13:16 PST (-0800)

definitely collect it. If you haven’t the equipment to conduct your own microscopy, there are many people here (myself included) who would be happy to do it for you.

By: Jim Kramer (jlkramer)
2013-02-24 18:35:32 PST (-0800)

I do not have a collection, sorry.
I did find another similar spider 3 weeks later, same pose, same general area, but the fungus had not started “sprouting”.

By: Danny Newman (myxomop)
2013-02-24 13:47:25 PST (-0800)

Thanks for migrating your fantastic images of this remarkable specimen. I hope more BugGuide folk continue to do the same. We’ve got a lot of unknown arthropod hosts concealing the IDs of their fungal pathogens. The more of them the BugGuide community feels like taking on, the better.

What you have here is probably “anamorphic.” Not long ago, that used to help narrow down the naming possibilities. Not so much anymore. There’s a good chance that those things we haven’t observed to have sex (ie: only reproducing asexually through clonal cells) actually do, we just haven’t observed it yet. The nomenclatural code recently decided it was silly to give two names to the same organism, so all the genera erected specifically to house the seemingly asexual or “imperfect” fungi are kind of defunct now.

Isaria is one such genus. Akanthomyces is another, and Paeciliomyces, and Gibellula, and Hymenostilbe, all of which have had arachnid-attacking members circumscribed within their ranks at one time or another. Quite honestly, I don’t exactly know how to proceed in the naming of these things anymore, but the unofficial policy around Mushroom Observer seems to be “carry on as before,” at least for those fungi whose corresponding sexual stages are not yet known or understood.

That said, a microscope is often crucial for obtaining even generic placement, whether or not the genera in question are “stable,” taxonomically speaking. Unless this particular species of spider is known to succumb to one particular fungal infection above and beyond all others, having the specimen in hand and under the scope would be the next step. So, the $50,000 question:

Do you have a dried collection?

poor spider.
By: Debbie Viess (amanitarita)
2013-02-24 10:51:40 PST (-0800)

so creepy the way that these parasitic fungi manage to alter the behaviors of their prey so that they actively participate in their own demise…and the optimal shedding of the invader’s spores.

great photos, and fine eye in spotting this tiny victim.

By: Byrain
2013-02-24 09:57:52 PST (-0800)

Nice pics, thanks for uploading it here. :)

Created: 2013-02-24 04:35:04 PST (-0800)
Last modified: 2013-02-24 13:53:48 PST (-0800)
Viewed: 112 times, last viewed: 2016-10-24 08:31:47 PDT (-0700)
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