What's That Bug? » Opiliones and Harvestmen http://www.whatsthatbug.com Are we experts yet? Wed, 23 Apr 2014 14:17:57 +0000 en-US hourly 1 http://wordpress.org/?v=3.8.3 Harvestman from Peru: Eutimesius simoni http://www.whatsthatbug.com/2014/03/09/harvestman-peru/ http://www.whatsthatbug.com/2014/03/09/harvestman-peru/#comments Sun, 09 Mar 2014 20:03:06 +0000 http://www.whatsthatbug.com/?p=73176 Subject: Harvestmen from Peru Location: Peru March 9, 2014 9:45 am Hello again with another interesting arthropod from rainforests of Peru. This harvestmen (Opilionidae) was found in the forest near Iquitos in 2013. Any clue which d lead to further ID is welcomed, thanks! Signature: Jiri Hodecek Hi again Jiri, This is truly an unusual [...]

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Subject: Harvestmen from Peru
Location: Peru
March 9, 2014 9:45 am
Hello again with another interesting arthropod from rainforests of Peru. This harvestmen (Opilionidae) was found in the forest near Iquitos in 2013. Any clue which d lead to further ID is welcomed, thanks!
Signature: Jiri Hodecek

Harvestman

Harvestman

Hi again Jiri,
This is truly an unusual looking Harvestman in the order Opiliones.  We are going to contact Dr. Adriano Kury and Ricardinho Pinto da Rocha who specialize in South American Opiliones to see if they can offer any information.

Dr. Adriano Kury responds
Parece um Eutimesius, Ricardo pode dizer melhor…
Translation courtesy of Babylon:  “It seems a Eutimesius, Ricardo can say better …”

Ed. Note: 
See FlickR, Eighth Eye Photography and http://www.museunacional.ufrj.br/mndi/Aracnologia/opiliones.html [we are unable to connect at the time of this posting].

Thank u a lot! Yeah, I kinda guessed Stygnidae family.. I just found out there r only 4 species in that genus.. Unfortunately almost no photos online..
J.Hodecek

And now there is your image.

Ricardo Pinto da Rocha responds
Daniel, it seems to be Eutimesius simoni
Ricardo

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Harvestmen from Iguazu Falls, Argentina: Geraecormobius sylvarum http://www.whatsthatbug.com/2014/02/17/harvestmen-iguazu-falls-argentina/ http://www.whatsthatbug.com/2014/02/17/harvestmen-iguazu-falls-argentina/#comments Mon, 17 Feb 2014 18:12:30 +0000 http://www.whatsthatbug.com/?p=72908 Subject: Spiders (maybe) at Iguazu Falls in Argentina Location: Iguazu Falls, Argentina February 17, 2014 9:24 am Dear Bugman or Bugwoman, I know you’re probably busier than a one-armed paper hanger, but I wonder if you can identify the critters in the attached photo. I took the photo at Iguazu Falls–a couple hours flight NE [...]

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Subject: Spiders (maybe) at Iguazu Falls in Argentina
Location: Iguazu Falls, Argentina
February 17, 2014 9:24 am
Dear Bugman or Bugwoman,
I know you’re probably busier than a one-armed paper hanger, but I wonder if you can identify the critters in the attached photo.
I took the photo at Iguazu Falls–a couple hours flight NE of Buenos Aires, Argentina.
The spiders (?) were massed under the protected dark side of a rock ledge. My tour guide had no idea what they were. I prodded a couple of them but they were very lethargic and barely moved. Could this be because it was the heat of the day (30 C)?
I appreciate your help and time.
Signature: the Planckster

Harvestmen

Harvestmen

Dear the Planckster,
These are not spiders, but they are Arachnids.  They are Harvestmen in the order Opiliones, and unlike spiders, they do not have venom.  They are also considered scavengers that feed on dead or dying creatures as well as vegetable matter. According to Arachnology.org:  Opiliones will eat:  “‘Everything’, almost. There are many kinds of Opiliones and some seem to have distinct preferences in what they eat while most seem to be less choosy and eat almost anything, especially animal matter. Some species are predatory on small insects, snails, worms, etc., whereas others walk around nibbling on plants, fruits, and dead material that they find. In captivity, you can try feeding your Opiliones freshly chopped meal worms or other juicy insects. Oatmeal, a little piece of fruit or nut might also be eaten.”
  According to BugGuide:  “In some cases, in dry climates, they gather in large numbers during the day, probably to avoid dessication, and wander about in search of food after the sun goes down.”  We will attempt to identify the species or at least the genus.  Arachnology.org has this to say about the aggregation behavior:  “This is indeed a good question. Nobody knows for sure, but scientists are investigating this behavior. It appears different kinds of Opiliones aggregate for different reasons. Some apparently aggregate to create or maintain a desirable microhabitat (temperature, humidity, darkness, etc.). Other aggregations appear to be for purposes of hibernation or rest. It may be possible that the defensive secretions of a mass of Opiliones would be more effective than those of a single individual. Also, the aggregations tend to pulsate wildly when bothered- a huge pulsating mass could be intimidating to predators.”

Harvestmen

Harvestmen

Dr. Adriano Kury responds to our identification request
Interesting, but I cannot recognize the species.
They are too much entangled.
It is a Pachylinae.
Can you photo a single one, or still better to send me one male?

Thank you Dr. Kury,
The person who sent the photo visited Iguazu Falls and took the photo, but we got the impression they were tourists and will most likely not be able to return to take either a new photo or to collect specimens.

Ricardinho Pinto da Rocha provides an identification
 Foto maravilhosa, são Geraecormobius sylvarum. Eu nunca tinha visto eles agregados.
Abraço, Ricardo
Babylon Translation:  Wonderful Photo, are Geraecormobius sylvarum. I had never seen them aggregates. Hug, Ricardo

Daniel,
Thank you kindly for your response to my email.
I appreciate your help and time.
Now I can sleep better without that question gnawing at my innards.
Ciao,
Jerry (the Planckster) Planck

Daniel,
Thanks again for the info.
You are correct–I’m no longer at Iguazu Falls.
However, the photo I sent you was a small version of what I actually took.
With my camera, I normally take both RAW and JPG pictures. The RAW photo is a much larger, uncompressed CMOS image.
To help see much greater detail when zooming in, I’ve sent a link at the bottom of this email to my Dropbox account where you can download it. It’s in a TIF format–I hope that works for you and Dr. Kury. It’s labeled “Harvestmen.tif”.
Jerry Planck


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Harvestman from Uruguay http://www.whatsthatbug.com/2014/02/07/harvestman-uruguay-2/ http://www.whatsthatbug.com/2014/02/07/harvestman-uruguay-2/#comments Fri, 07 Feb 2014 16:43:20 +0000 http://www.whatsthatbug.com/?p=72758 Subject: Harvestman in Uruguay Location: Salinas, Uruguay February 6, 2014 I have a great picture of one that is not dying.  Looks gorgeous!  For your website! Ginger Kurowski Hi Ginger, Thank you for supplying our site with this photo of a healthy Harvestman, Paramphere bimaculatus, as a followup to your original submission. Absolutely.  [...]

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Subject: Harvestman in Uruguay
Location: Salinas, Uruguay
February 6, 2014
I have a great picture of one that is not dying.  Looks gorgeous!  For your website!
Ginger Kurowski

Harvestman:  Paramphere bimaculatus

Harvestman: Paramphere bimaculatus

Hi Ginger,
Thank you for supplying our site with this photo of a healthy Harvestman,
Paramphere bimaculatus, as a followup to your original submission.

Absolutely.  It helps to have a “good” picture for others to identify.  It is a beauty.  Great pic.
Thank you for all your work.  I am enjoying your website.  I never thought I would have an interest in bugs but we have so many here in Uruguay.  We just moved here from the US so these bugs are new to me.  What is funny, is the people that live here never noticed many of them and are unaware of their own bugs!  It sometimes takes new eyes to see things around us.
Take care and thanks again.
Ginger Kurowski

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Harvestman from Uruguay is Paramphere bimaculatus http://www.whatsthatbug.com/2014/01/24/harvestman-uruguay/ http://www.whatsthatbug.com/2014/01/24/harvestman-uruguay/#comments Fri, 24 Jan 2014 15:05:47 +0000 http://www.whatsthatbug.com/?p=72539 Subject: Harvestman in Uruguay Location: Salinas, Uruguay January 23, 2014 2:19 pm I think this a Harvestman. I can’t find a picture quite like it. The two yellow dots on the triangle shaped body. It was dying when I took this photo so it is not standing up to give an accurate picture. The back [...]

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Subject: Harvestman in Uruguay
Location: Salinas, Uruguay
January 23, 2014 2:19 pm
I think this a Harvestman. I can’t find a picture quite like it. The two yellow dots on the triangle shaped body. It was dying when I took this photo so it is not standing up to give an accurate picture. The back legs are longer with little spikes on them. We live out in the country outside of Montevideo, Uruguay.
Signature: Ginger

Harvestman

Harvestman

Hi Ginger,
You are correct that this is a Harvestman in the order Opiliones.  Rod Crawford of the Burke Museum assisted in a species identification of a Harvestman from the Falkland Islands, and we will attempt to contact him to see if he can provide any additional information.

It resembles a gonyleptid, but the man you really want for this is Adriano Kury who is really The Man on South American harvestmen, especially of this group.
Rod Crawford, Burke Museum, Seattle, USA

Dear Adriano Kury,
Rob Crawford suggested I contact you regarding this Opiliones sighting nearby Montevideo, Uruguay.
You can also see the link here:  http://www.whatsthatbug.com/2014/01/24/harvestman-uruguay/
Thanks for any information you are able to provide.
Daniel Marlos
What’s That Bug?

Great, thank you.  I found a second one dead yesterday.  If I find a good, live one, I will try to get a picture of it “looking its best” to send to you for your collection!
Thank you
Ginger Kurowski

Adriano Kury Responds
Gonyleptinae – a male of Parampheres sp.
I don’t know which species, genus has not been revised, but there are not many species.
I believe a student of Ricardo is studying this animal, you might check with him.
Cheers
** PROF. DR. ADRIANO BRILHANTE KURY **
Dept. Invertebrados — Lab. Aracnologia
Museu Nacional, Universidade Federal do Rio de Janeiro
Rio de Janeiro – RJ – BRAZIL

Estimado Daniel, El opilion es un Paramphere bimaculatus.
abrazo, Ricardo

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Harvestman from South Africa is Rhampsinitus species http://www.whatsthatbug.com/2014/01/08/harvestman-south-africa/ http://www.whatsthatbug.com/2014/01/08/harvestman-south-africa/#comments Wed, 08 Jan 2014 14:55:04 +0000 http://www.whatsthatbug.com/?p=72314 Subject: South African Spider Identification Location: KwaZulu-Natal, South Africa January 8, 2014 5:56 am Hi, A friend recently snapped a photo of this spider in KwaZulu-Natal, South Africa. Any idea what species this is? Signature: Ian Hi Ian, Though it resembles a Spider and it is also classified as an Arachnid along with Spiders, Ticks [...]

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Subject: South African Spider Identification
Location: KwaZulu-Natal, South Africa
January 8, 2014 5:56 am
Hi,
A friend recently snapped a photo of this spider in KwaZulu-Natal, South Africa. Any idea what species this is?
Signature: Ian

Harvestman

Harvestman

Hi Ian,
Though it resembles a Spider and it is also classified as an Arachnid along with Spiders, Ticks and Scorpions, this Harvestman belongs to the order Opiliones.  Unlike Spiders and Scorpions, Opiliones do not have venom.  Biodiversity Explorer indicates they are also called Shepherd Spiders in South Africa, and though there are some images, none of the examples resemble your particular Harvestman.  There are several images of similar looking Harvestmen from Australia pictured on the Catalogue of Organisms website, and the Catalogue of Organisms posting for February 5, 2013 has a nice image of an Opiliones from New Zealand that looks very similar to your individual.  Determining the species would probably require examination of the specimen by a specialist.

Update:  Rhampsinitus species
Christopher Taylor who writes the Catalog of Organisms blog was kind enough to identify this Harvestman to the genus level of Rhampsinitus.

Thanks, Daniel! I know you’re probably quite busy, so your reply is greatly appreciated.
Kind regards,
Ian Dickinson

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