Tag Archives: food chain

Large Spotted Acrea Caterpillars bothered by Tachinid Fly

Location: Kinshasa, Congo
January 2, 2012
Keith,
Thanks for the additional information on the caterpillars.  We went back yesterday to the same location where we found the Acraea zetes menippe and saw a whole lot more caterpillars.  There were quite a few climbing up a certain plant and regrouping in clumps of 5-10 individuals. We photographed a group on one of the leaves they were eating and filmed some interesting behavior.   Where the caterpillars were in a group, they seemed to react to flies.  As flies approached, they all started flailing their heads in the air.  We tried to reproduce the behavior by tapping on the leaf and blowing on the caterpillars but they only seemed to have that reaction to approaching flies.  The video can be viewed here:
http://www.flickr.com/photos/globalvoyager/6622065289/in/photostream
A few pictures of the group on the leaf they were feeding on and one of a solitary caterpillar found nearby also attached.
Thanks again
Katy and her Dad

January 4, 2012
Keith and Daniel,
We hope you had a great New Year celebration.  We are intrigued to get your opinion on the behavior witnessed by a group of Acraea zetes caterpillars that we saw a few days ago.  We sent an email will additional photos of the caterpillars on one of their food source leaves but the internet connection has been very problematic.  Please confirm receipt or we can send again, one image at a time.   The video can be viewed here:
http://www.flickr.com/photos/globalvoyager/6622065289/in/photostream/
Thanks
Katy and Nick

acraea tachinid congo katy 300x218 Large Spotted Acrea Caterpillars bothered by Tachinid Fly

Acraea Caterpillars and Tachinid Fly

Keith Wolfe responds
Katy, Dad, and Daniel,
Let’s pretend for a minute that these seven caterpillars are the five of us (mustn’t forget Mom) and two friends having a picnic, when suddenly a never-before-seen ginormous (relative to our size) fly starts buzzing around.  Bugman and I would probably be snapping photos and otherwise documenting the encounter for a scientific paper, but fast forward 1000 generations, when by now natural selection has honed our behavior to instinctively recognize these tachinid flies (http://en.wikipedia.org/wiki/Tachinidae) as mortal enemies — parasitoids whose reproductive strategy is to lay eggs inside our soft, slow-moving bodies so that their ravenous offspring will survive at our expense.  With that in mind, we too would be wildly flailing our heads, arms, and bodies, along with regurgitating bitter intestinal juices as an added deterrent.
Blue skies,
Keith

Thanks Keith,
That is great information and it explains why the caterpillars were not phased by tapping on the leaf or blowing on them but when they heard the flies nearby, they went into hyperdrive with the flailing.
Thanks again!

January 12, 2012
Dear Katy, her Dad and Keith,
Thanks so much for supplying additional photographs and a wonderful explanation of the parasitic habits of the Tachinid Flies with regards to Caterpillars.  We have been on holiday for the past week and just returned, which we hope explains our lack of input in this posting.

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What's That Bug? does not endorse extermination

Spider Wasp and Huntsman Spider Prey hit with Broom in Australia

wasp
Location: melbourne, australia
December 18, 2011 6:42 am
This huge ie 4-5 cm wasp was dragging huntsman spider up the window. Spider still seemed alive
I live in Melbourne, Australia and it is December-beginning of Summer.
Wasp not aggressive to me, BUT NOT HAPPY when I hit it with a broom. It dropped twitching spider & flew off!
Signature: Dom

spider wasp prey australia dom 300x296 Spider Wasp and Huntsman Spider Prey hit with Broom in Australia

Spider Wasp and Huntsman Spider Prey

Dear Dom,
We have several excellent images of Australian Spider Wasps with Huntsman Spider prey in our archives.  The female Spider Wasp stings and paralyzes the Spider and then drags it back to her burrow to act as food for her brood.  The adult wasps feed on nectar.  We can imagine that it is a difficult task for the female Spider Wasp to locate her prey, sting it and then begin the long haul back to her burrow, and it is quite unfortunate that your broom hitting incident interrupted her task.  We hope that now that you are better informed, you will allow these food chain dramas to play out without unnecessary interventions in the future.

 

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Giant Robber Fly Eats Wasp

Food chain
Location: southern indiana
November 21, 2011 7:07 am
Robber fly kills & eats wasp
Signature: brian

robber fly eats wasp brian 300x170 Giant Robber Fly Eats Wasp

Giant Robber Fly eats Wasp

Hi Brian,
Your Robber Fly appears to be one of the Giant Robber Flies in the genus
Promachus.  BugGuide indicates “Adults predatory, often on Hymenoptera,” and your individual is fulfilling its reputation.  The wasp appears to be a Paper Wasp.

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What's That Bug? does not endorse extermination

Jumping Spider raised in captivity

Female Phiddipus jonsoni
Location: Oxnard, California, USA
November 24, 2011 4:22 am
My friend caught this beautiful girl, who we’ve named Ruby, near her boyfriend’s apartment in Oxnard, California. Since her capture, she has laid three egg sacs, I am now taking care of the last remaining baby from the last sac(3 months old now, still too immature to determine gender). I figured you would like these pictures, though they aren’t the most high quality out there. I’ve loved spiders since I was a little girl, I assure you she’s well fed (mostly crickets, though she adores flies if I can catch them), and has a comfortable enclosure with fake plants and moss.
Signature: California Spider Lover

ruby jumping spider quarter 300x212 Jumping Spider raised in captivity

Jumping Spider

Dear California Spider Lover,
We are positively charmed by your letter, however, we do have a few questions.  Did you raise many of the spiderlings?  What did you feed them?  Were they released back into the wild?

ruby jumping spider 300x229 Jumping Spider raised in captivity

Jumping Spider

We also believe that raising local spiders like this and then releasing them back into the wild is an excellent educational opportunity for young children.

ruby jumping spider eats fly 300x215 Jumping Spider raised in captivity

Jumping Spider eats Fly

The first set of spiderlings (over 100!), I released after the majority of them hatched, I placed their sac under a bush near my husband’s grandma’s house in Ojai. The second sac only hatched a few spiderlings (around 30), I planned to raise them, but I didn’t have a car and lived half an hour away from the nearest store that sold fruit flies, and they didn’t survive. When Ruby laid the third sac, it was hard to see and I wasn’t sure whether it was a sac or just one of her webs, so it stayed in her enclosure until I noticed the spiderlings (a few weeks old at that point) around it. I carefully removed the sac and as many of the spiderlings I could to a large jar, and had around 60. With school and moving keeping me busy at the time, I neglected to get more jars or other suitable enclosures to separate them once they got to be around a month old, so most died, but I ended up with two who cohabited for quite a while. I separated them, but one died, and now I’m left with the last one, who is currently still being fed on fruit flies, and the occasional tiny cricket that gets into the cricket bag when I buy some for Ruby. I plan to keep him, and move him to a similar enclosure as Ruby once he’s big enough.
Attached is a picture of the spiderling I just took (through the glass of his jar, shows his underside), he’s about a centimeter long from head to spinnerets, still has the juvenile black and white pattern on his back, but, I just checked and he does have one spot of red, should hopefully know gender in another 2 or 3 molts!

rubys offspring 300x214 Jumping Spider raised in captivity

Jumping Spiderling

Wow, that is a much more thorough update than we expected.  Thanks so much for providing that additional information.

 

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Golden Orbweaver

Golden Orb Weaver
Location: Wilmington, NC
November 22, 2011 2:20 pm
I just wanted to share a pic of a beautiful spider with you. From the other pics on your site, I think she is a Golden Orb Weaver. She lived in our bushes for a while and then moved into the eave of the house next door. I’m generally scared to death of spiders, but I learned a lot from watching her.
Signature: Bridget

golfen orbweaver bridget 300x234 Golden Orbweaver

Golden Orbweaver

Dear Bridget,
This gorgeous Golden Orbweaveris also called a Writing Spider because of the zigzag stabilimentum that she spins into her web, presumably to help camouflage her from predators.  She is enjoying a nice meal, but we cannot determine the identity of her prey.  We also want to let our readers know that before we cropped your photo, it was dated August 11, 2011.

golden orbweaver bridget 2 300x230 Golden Orbweaver

Golden Orbweaver

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Anchor Stink Bug eats Monarch Caterpillar

What is this pink and black beetle?
Location: Down East Maine – field
November 17, 2011 9:20 am
I have tried to find out – but not 100% sure – closest I could find was a Calligraphic Beetle? But the shape of his back-end is more pointed than the rounded Calligraphic Beetles I found images of on the Bug Guide website, and the black markings don’t fully match up. This beetle was definitely pink too. I would love your help:) It definitely was taking this monarch caterpillar with it!
Signature: Caroline

anchor stink bug eats monarch caroline 264x300 Anchor Stink Bug eats Monarch Caterpillar

Anchor Stink Bug eats Monarch Caterpillar

Dear Caroline,
The predator in this Food Chain drama is an Anchor Stink Bug,
Stiretrus anchorago, and we identified it on BugGuide which notes:  “Adults feed on the larvae of beetles, butterflies, and moths. Stiretrus anchorago is considered an economically beneficial insect, feeding on the larvae of the Mexican Bean Beetle, among other pest species.”  It seems late in the season for this to occur.  When was this photo taken?

anchor stink bug eats monarch caroline 2 140x300 Anchor Stink Bug eats Monarch Caterpillar

Anchor Stink Bug eats Monarch Caterpillar

The photo was taken August 8th.  And thank you soooo much for getting back to me.  Very exciting to know who that was in my backyard!
-Best, Caroline

 

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Spider Wasp preys upon Huntsman Spider

Deceased huntsman spider with unknown wasp
Location: Eastern Suburbs, Sydney, about 1km away from the pacific ocean.
November 13, 2011 11:45 pm
Hey, I got these series of pictures and this video outside on a warm summers day, on the 14th November, 2011. A warm summer summer in November must mean the southern hemisphere, indeed this image is taken on the eastern suburbs, in Sydney, Australia, about 1km away from the ocean.
Im fairly sure the spider is an huntsman spider but I do not know about the wasp. Does it normally prey on spiders and other large insects ? Where does it nest, and does it pose a threat to humans ?
(I live with my grandparents, and to say they are squeamish about insects is an understatement)
EDIT : I realized that the wasp has been featured previously on this site, however, I shall share these high resolution (if you think they are) images of what I found. I also catch huntsman spiders inside my home and release them too. I shall attach those too, if you wish to share them.
I hope you find the images to be of reasonable quality and I hope they will be useful for your site. You may repost/embed the video to your site too, if you wish.
Signature: Sufyan

spider wasp huntsman australia sufyan 300x206 Spider Wasp preys upon Huntsman Spider

Spider Wasp preys upon Huntsman Spider

Hi Sufyan,
We actually have this particular Food Chain drama posted to our website several times including this recent posting of a Spider Wasp and its Huntsman Spider prey.  We believe the Spider Wasp is
Cryptocheilus bicolor, but we do not feel confident trying to identify the Huntsman Spider to the species lever because there are so many Huntsman Spiders in Australia.

spider wasp huntsman australia sufyan 2 300x206 Spider Wasp preys upon Huntsman Spider

Spider Wasp preys upon Huntsman Spider

Spider Wasps are solitary wasps, and a female provisions the nest with paralyzed spiders for her brood.  The adult Spider Wasps feed upon pollen, and only the larval wasps are carnivores, but they are unable to hunt for themselves.  It is important to realize that this Huntsman Spider is paralyzed, not dead.  A dead spider would soon dry out, making it an unacceptable food for the larvae.  By paralyzing the Huntsman Spider, the living spider supplies the larval wasp with fresh meat.  The larva feeds upon non-vital meat first so that the spider is literally eaten alive.  Since the nest is underground and we have received so many images of this particular Spider Wasp scaling walls while dragging a large paralyzed Huntsman Spider, we have deduced that the Spider Wasp is unable to take off from the ground with such a heavy payload, but by climbing to gain altitude, it is able to fly or glide towards its burrow with the heavy Spider in tow.  Spider Wasps are not aggressive, though we suspect they may sting if provoked or carelessly handled.

spider wasp huntsman australia sufyan 3 300x206 Spider Wasp preys upon Huntsman Spider

Spider Wasp preys upon Huntsman Spider

 

 

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Jumping Spider eats Fly in Pakistan

what is this spider ?
Location: Lahore, Pakistan
November 5, 2011 5:07 am
found in my lawn. don’t know what kind of spider it is but i like its textures icon smile Jumping Spider eats Fly in Pakistan
Signature: Shahzad Riaz

jumping spider pakistan 300x300 Jumping Spider eats Fly in Pakistan

Jumping Spider eats Fly

Dear Shahzad Riaz,
This effective predator is a harmless Jumping Spider in the family Salticidae.

jumping spider pakistan 2 300x300 Jumping Spider eats Fly in Pakistan

Jumping Spider eats Fly

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