Currently viewing the category: "Opiliones and Harvestmen"

Subject: spider
Location: atascadero, ca
April 4, 2015 10:22 pm
Hi. A friend took a picture of this spider. Central Coast California.
Signature: I don’t know.



Your Harvestman appears to be in the family Sabaconidae based on images posted to BugGuide, and it looks the closest to the Snail Eating Harvestmen in the genus Taracus, in our opinion, especially in this BugGuide image.

Awesome! Thanks for taking the time! You guys are Awesome! My daughter and I have been looking up bugs on your site since She was probably 2-3 years old. I remember the first one we looked up was the tarantula hawk! She is now 14 years old! Thanks again, have a great day!

Wow, you have been with us since almost the very beginning.  Thanks for letting us know.

Subject: What is this?
Location: Traverse City, Michigan
September 25, 2014 6:20 am
This guy was found outside in a kids Little Tikes wagon a couple days ago. The picture was taken with a cell phone but I’m not sure about the exact size.
Signature: Karrie



Hi Karrie,
This is an arachnid in the order Opiliones, and members of the order are commonly called Harvestmen.

Subject: Spider with pincers and strange legs
Location: Somerset, south-west UK, bathroom ceiling
August 18, 2014 9:36 am
Hi I found this on the ceiling of our bathroom, in UK in the summer. Strange flat legs out to the sides and what look like pincers at the front. Is it a harvestman too?! Someone suggested a kind of tick!
Signature: Freya Morgan



Dear Freya,
You are correct that this is a Harvestman.  More specifically, it is
Dicranopalpus ramosus, an invasive species that NatureSpot has identified as being:  “Now quite frequent in Britain” and “The species has spread across Europe from Morocco. As early as 1957, it was reported in Bournemouth in southern England, from where it spread. It reached Scotland in 2000.”  We have always been amused by the uneven legs, and the shape of this Harvestman reminds us of architectural dingbats from mid-century modern Los Angeles apartment buildings and starburst home furnishings from the same time period.

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 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 [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..

And now there is your image.

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

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



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  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. 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.”



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

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.
Jerry (the Planckster) Planck

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

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