2011 Wrap-Up for Mushroom Observer
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Observation: Hypocreales sp. Lindau (34005)
About Hypocreales Lindau
When: 2010-02-21
Collection location: Kaipara harbour, Auckland, New Zealand [Click for map]
Who: Michael W (michael w)
No herbarium specimen

Notes: This is a parasitic fungus on a spider in the genus Phoroncidia, possibly P. quadrata.

The fruit body is 5mm long by 0.5-0.8mm in diameter and is fruiting directly out the back of the spiders abdomen.

Spores: Elongate ovoid, 8-9 × 4-4.5µm.

Species Lists:
Entomopathogenic Fungi
Proposed Names: Propose Another Name
Proposed Name User Community Vote
  michael w   5% (2)   Eye3
Recognized by sight
  michael w   34% (3)   Eye3
Recognized by sight
  myxomop   55% (1)   Eyes3
Recognized by sight

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

Eye3 = Observer’s choice Eyes3 = Current consensus
Comments: Add Comment

Created: 2010-05-29 06:54:11 WET (+0000)
By: Danny Newman (myxomop)
Summary: One of the more spectacular entomopathogenic fungi I’ve laid eyes on.

But not one that strikes me as Gibellula, at least macroscopically. I am a far, far cry from an authority on the topic, but poke around for pictures of this genus and you tend to find specimens covered in a pulverous, white layer of tiny capitate protrusions, more or less like what’s linked in the comment before this one.

Having a Cordyceps pro on hand (Spatafora, Evans) for some commentary would be a big help on this one.

43847

Created: 2010-02-24 02:16:46 WET (+0000)
By: Michael W (michael w)
Summary: Strange indeed,

It’s legs are all held close to it’s sides except the one it hangs it’s thread trap from, it’s hard to get a really clear image because they are so small, the largest specimens are only up to 2mm in diameter with most being half that size!

I suspect the fungus is a species of Gibellula, the spores are very similar in shape to those found in this observation but a bit larger.
http://mushroomobserver.org/28706?search_seq=1328269

155186

Created: 2010-02-24 01:43:17 WET (+0000)
By: debbie viess (amanitarita)
Summary: OK, I thought the mushroom was weird…

but that is the strangest looking spider that I have ever seen. where the heck are it’s legs??!

139559

Created: 2010-02-24 00:18:05 WET (+0000)
By: Michael W (michael w)
Summary: Yes,

Imagine being impaled from the inside by a fungus!
What’s even cooler is that at his age his eye sight is still good enough to find these small guys, he even remembered exactly where it was in the bush and I was able to collect the specimen today:)

155186

Created: 2010-02-23 23:04:16 WET (+0000)
By: debbie viess (amanitarita)
Summary: ow, that’s gotta hurt!

yes Michael, please post a photo of an un-fungated host spider, but with this obsie, please.
it can be tough to move freely around the site sometimes, what with all of the (ahem) mushrooming interest.

BTW, very cool that your Dad could recognize the host spider with so few visual clues…at least to our untrained eyes.

139559

Created: 2010-02-23 16:08:41 WET (+0000)
By: Douglas Smith (douglas)
Summary: Post an obs. of the spider only?

Nathan are you suggesting posting an obs. of only the spider? And then link it to the obs. of the cordyceps, as two separate obs,? That doesn’t sound right. I mean we don’t post anyother substrate of a mushroom as a separate obs. Like posting an obs. of a tree as the mycorhizal host? Or some species of wood/moss/grass as the substrate?

But still I would be nice to see the spider as part of this obs., just not as a separate obs. That’d be weird, perhaps?

7181

Created: 2010-02-23 12:56:15 WET (+0000)
By: Erin Page Blanchard (CureCat)
Summary: Wait

Are you suggesting that we start posting observations of arachnids (without fungal parasites) on _Mushroom_Observer??

138344

Created: 2010-02-23 12:06:20 WET (+0000)
By: Nathan Wilson (nathan)
Summary: Yes, please add the spider!

It would be great to have a picture of the host. Adding it to the observation would be fine, but you could also add the name for the spider and then reuse your original image to create another observation of the spider. The second approach would result in the image being marked with both species so people would pick up on the connection. Also the descriptive text would have links to the spider.

15874

Created: 2010-02-23 09:35:47 WET (+0000)
By: Erin Page Blanchard (CureCat)
Summary: .

I think a photo of the host species would be very appropriate to post with the observation.

138344

Created: 2010-02-23 08:29:53 WET (+0000)
By: Michael W (michael w)
Summary: .

My Dad studies Arachnids and has been studying this genus for quite some time now, he found this unfortunate victim, the specimen was found on a plant where many similar spiders were found, the shape of the abdomen is recognizable and the legs can be seen at the top of the image when blown up, I could post an image of one of the living spiders but it doesn’t show any fungi?

155186

Created: 2010-02-23 05:29:32 WET (+0000)
By: Erin Page Blanchard (CureCat)
Summary: .

Wow… How can you identify the “victim” anymore?

138344


Created: 2010-02-23 03:55:46 WET (+0000)
Last modified: 2011-05-18 03:20:37 WET (+0000)
Viewed: 220 times, last viewed: 2012-01-21 08:50:26 WET (+0000)
Show Log

Images: (large thumbnails)

79105

79211

79212
Spores at 1000x magnification, scale divisions=1µm.

79213
Although off topic it’s interesting to note how this genus of spider catches it’s prey, it hangs a long thread with sticky globules as if it were fishing, when something becomes caught it drops the line and the victim becomes entangled in all of the droplets, the spider then quickly dro...

79214
You can see how the spider hangs it’s fishing line from one of it’s front legs.