Author Archives: "BUGGING" YOU FROM San Juan Island

A Little Weevil House

Key Words: masting, Curculio, Quercus, mast seeding, acorn weevil, diapause

I picked up these acorns (Quercus sp.) when I visited my folks recently in Texas. They have several oak trees on their property and there was an abundance of acorns all over the ground this year, so I brought a few home with me in a ziplock bag. I like acorns. My mom used to draw little faces on them and I had acorn “people” to play with when I was a child.

Acorn “person”

I also found a very cool bug under one of those oak trees while I was there. This strange looking creature is one of the Nut and Acorn Weevils (Curculio sp). It has an extremely long snout. When you find out how this weevil uses it to DRILL, you may be amazed. The adult female weevil will use this drill on her very long snout to make a hole in those acorns!

Nut and Acorn Weevil (Curculio sp).
Nut and Acorn Weevil (Curculio sp).
Nut and Acorn Weevil (Curculio sp).

Keep reading. It really is amazing.

A female weevil will make a hole in the acorn so she can put her eggs inside it!

Hole drilled by Nut and Acorn Weevil

Because I like word games, I thought I’d point out to you that rearranging the letters in the word weevil will make the words “we live?” Well, those eggs hatch into baby weevils who LIVE in a little house that is an acorn (and sometimes in other nuts too). Some folks call them grubs or worms. They are actually the larvae of the adult weevil mom who selected the acorn for her nursery.

If you are assessing this situation from an agricultural perspective (say that nut is a pecan), invested in harvesting a profitable crop, you might be feeling very worried. Sometimes the worry may indeed be justified, but in many cases, like with these acorns, the tree has evolved a strategy to deal with occasional waves of weevils and other insects we consider pests. In actuality, they are just utilizing the resources of the tree like we do when WE (the humans) eat the nut or fruit.

Larvae of Nut and Acorn Weevil (Curculio sp).

I’m going to name the trees’ strategy of dealing with this bug FEAR NO WEEVIL. However, the actual scientific moniker for this strategy (and it applies to other pests and adverse weather stressors as well) is MASTING. The word mast has been used since way back in the Middle Ages to refer to the acorns and seeds of forest trees that drop and accumulate on the ground. It comes from Old English, mæst. Essentially, masting is an ecological term referring to the highly variable and often synchronized periodic cycles of fruiting/seeding in the reproductive processes of trees (both forest and fruit trees).

How is it a strategy for circumventing the deleterious affects of pests? Well, the idea is that in some years, bumper crops of nuts and seeds are produced in order to satiate the predators, so some are left to germinate and continue new generations. In this particular case, you could think of it as the oak trees sacrificing some of their offspring to the weevil gods. When there are more acorns than there are adult female weevils, some of those acorns will escape the weevil drill and makeover into little bug nurseries.

In reality, this relationship is much more complicated. In some cases, acorns parasitized by only a few weevil larvae will germinate, while those acorns with many larvae will not. The trees’ bumper crops of seeds and nuts will also cycle with years of low production, where resources are scarce for the weevil (and other organisms). Nature is incredibly dynamic though. Studies show some species of weevils have adapted a counter mechanism to circumvent the trees’ strategy of masting. It’s called prolonged diapause. This means these weevils are able to sleep longer (more than one year) as they develop in order to synchronize adult emergence with years when the trees’ seed/nut production is high.

If you are interested in reading more about the history and MYSTERY of masting, I encourage you to delve into the literature I’ve listed in the references below. It’s quite fascinating – especially going back in history to the link between masting and pannage. Way more than I can cover here. Check it out.

References

Baldwin, M. 2021. Pigging out in the forest: the Common of Mast (Pannage) in Britain https://www.wildlifeonline.me.uk/blog/post/pigging-out-in-the-forest-the-common-of-mast-in-britain

Bugguide 2021. Curculio. https://bugguide.net/node/view/6682

Higaki M (2016) Prolonged diapause and seed predation by the acorn weevil, Curculio robustus, in relation to masting of the deciduous oak Quercus acutissima. Entomol Exp Appl 159:338–346. https://doi.org/10.1111/eea.12444

Jefferson, R. 2006. Why Are More Acorns Falling? Excessive Drops of Nuts from Oak Trees Is Part of Normal ‘Mast Year’ Phenomenon. Scientific Times. https://www.sciencetimes.com/articles/33795/20211006/why-more-acorns-falling-excessive-drops-nuts-oak-trees-part.htm and https://youtu.be/EQ748TZcuqs

Jesse, L. No date. The dark side of collecting acorns. Plant and Insect Diagnostic Clinic. Iowa State University Extension and Outreach. https://www.extension.iastate.edu/news/2007/sep/072107.htm

Koenig WD. 2021 A brief history of masting research. Phil. Trans. R. Soc. B 376: 20200423. https://doi.org/10.1098/rstb.2020.0423 Koenig, W. D., & Knops, J. M. H. (2005). The Mystery of Masting in Trees: Some trees reproduce synchronously over large areas, with widespread ecological effects, but how and why? American Scientist93(4), 340–347. http://www.jstor.org/stable/27858609

Araneus diadematus, My Cross Orb Weaver friend named “Louisa.”

I first spotted this beauty on October 1, 2021 while I was taking a walk along our road on San Juan Island. There was a cluster of sun loving mullein (Verbascum thapsus) mixed with one or two thistles (probably Canada thistle) growing along the road. The glistening silk threads woven between them drew me over to investigate. There were several Cross Orb Weavers sharing the space here, but one of these was not like the other. The spider that caught my attention was quite a bit darker than the others. Describing it as brown just doesn’t do it justice. Brown sounds much too plain. She was a lovely brunette amongst a few redheads!

~ After you’re done reading, come back and check out this link to learn more about pigmentation in arachnids – https://www.bio.fsu.edu/~miller/Spider%20photos/spider_literature/color%20in%20spiders%20papers/Oxford_Gillespie_20xx.pdf

Since I often enjoy walking on our road on sunny days, I started looking for her when I passed her home – the Mullein “apartments.” It wasn’t just the spiders enjoying the sunny housing complex, but these units housed a few other species as well. I found some Stilt Bugs (Neoneides sp.) and some Pentatomidae hiding in the fuzzy star shaped trichomes (little hairs) of the Mullein leaves.

Now that autumn has ushered in falling leaves, falling temperatures, and a good bit of rain, I thought of my friend Louisa, the Orb Weaver out in the cold. Had she managed to find a sheltered spot to survive the recent storms? Several times over the past two weeks I’ve looked for her, but she was just gone. Since the lifespan for this species is only a year or less, I suspected she’d reached her end with our last dip in temperatures, gusty winds, and precipitation. I held out a tiny bit of hope though. Just a bit!

Today (November 6, 2021), my husband and I walked our road. It was sprinkling and the precipitation was cold. When we got down to the point on the road to turn around, shortening our walk to just the point where the old cabin used to be, I asked him to wait one second while I looked one more time at that patch of Mullein and the drying stand of thistles.

As I bent down to look closely, I saw a single strand of silk. Examining the attachment and following closely, it led me to Louisa. She was tucked under the dried nodding inflorescence of the thistle. Once a purply-pink sugar treat for pollinators, the now nodding blooms have been repurposed into a thatch roof to keep this little spider dry.

I’ve thought about relocating her so the county doesn’t mow her when they scalp the roadside vegetation. It is bound to happen at some point. For now, I’m going to leave her be, and just keep a close eye on her. Maybe I’ll make a sign! Be Nice to Spiders. ❤️ Louisa lives here!

Fun Fact! Did you know that 25% of the diet of Orb Weaver spiderlings is pollen? Check it out. Article linked in my list of sources below.

Araneus diadematus (Cross Orb Weaver) October 1, 2021 – San Juan Island, WA

Araneus diadematus (Cross Orb Weaver) October 1, 2021 – San Juan Island, WA

Araneus diadematus (Cross Orb Weaver) October 1, 2021 – San Juan Island, WA

Araneus diadematus (Cross Orb Weaver) October 13, 2021 – San Juan Island, WA
Araneus diadematus (Cross Orb Weaver) October 16, 2021 – San Juan Island, WA

This is “Louisa,” the Land Bank Orb Weaver Spider. She lives on a Mullein plant alongside the road. I’ve been watching her since October 1, 2021. Hoping she will not become a casualty of San Juan County’s pre-winter roadside mowing. She’s also an expecting mom!

This is “Louisa,” the Land Bank Orb Weaver Spider. She lives on a Mullein plant alongside the road. I’ve been watching her since October 1, 2021. Hoping she will not become a casualty of San Juan County’s pre-winter roadside mowing. She’s also an expecting mom!

Araneus diadematus (Cross Orb Weaver) November 6, 2021 – San Juan Island, WA
Araneus diadematus (Cross Orb Weaver) November 6, 2021 – San Juan Island, WA
Araneus diadematus (Cross Orb Weaver) November 6, 2021 – San Juan Island, WA

References and further Reading –

Eggs B, Sanders D (2013) Herbivory in Spiders: The Importance of Pollen for Orb-Weavers. PLoS ONE 8(11): e82637. https://doi.org/10.1371/journal.pone.0082637

Gucker, Corey L. 2008. Verbascum thapsus. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: https://www.fs.fed.us/database/feis/plants/forb/vertha/all.html [2021, November 6]. 

Horton DR, Lewis TM (2003) Numbers and types of arthropods overwintering on common mullein, Verbacsum thapsus L. (Scrophulariacae), in a central Washington fruit-growing region. Journal of the Entomology Society of British Columbia 100, 79–87.

Oxford, Geoff & Gillespie, Rosemary. (1998). Evolution and ecology of spider coloration. Annual review of entomology. 43. 619-43. 10.1146/annurev.ento.43.1.619.

Riaz, Muhammad, Zia-Ul-Haq, Muhammad and Jaafar, Hawa Z.E.Common mullein, pharmacological and chemical aspects. Revista Brasileira de Farmacognosia [online]. 2013, v. 23, n. 6 [Accessed 6 November 2021] , pp. 948-959. Available from: <https://doi.org/10.1590/S0102-695X2013000600012&gt;. ISSN 1981-528X. https://doi.org/10.1590/S0102-695X2013000600012.

Turker AU, Gurel E. Common mullein (Verbascum thapsus L.): recent advances in research. Phytother Res. 2005 Sep;19(9):733-9. doi: 10.1002/ptr.1653. PMID: 16222647. https://onlinelibrary.wiley.com/doi/10.1002/ptr.1653

Nut Leaf Weevil

I found a’nutter weevil! They’ve been everywhere this week! Looks like this may be the Nut Leaf Weevil (Strophosoma melanogrammum). These weevils feed on the leaves of broad leafed shrubs. I saw it on a chunk of rotting alder. It was pretty small and tough to photograph in low light. Probably about 3.2 mm in size. San Juan Island, WA October 13, 2021.

Strophosoma melanogrammum 

“Spider Bites Woman’s Lip”

The headline, Spider Bites Woman’s Lip popped out in my news feed yesterday. As an entomologist, these bizarre reports are click bait for me. I bit. As I read through the linked piece, my first thought was, “Yes!” Someone was definitely hallucinating!”

My other knee jerk conclusion is we have doctors who have absolutely no diagnostic skills whatsoever. In reconsidering, he may not be the one at fault though, or at least not entirely. In fact, it would be interesting to hear the physician’s side of this story. Did he definitively state it was a Brown Recluse Bite? Or, did he suggest it “might be?” Are the patient and the Newsweek reporter the ones guilty of the hyperbole here?

It’s got to be fantastic to be featured in Newsweek, right? Please note my sarcasm! The media is a huge problem when it comes to sensationalizing stories and egging on the screaming fear folks have around spiders. You’re welcome to take a look at this story yourself, but please come back because I’m gonna tell you what’s wrong with it!

https://www.newsweek.com/spider-bite-womans-lip-brown-recluse-hospitalized-hallucinate-virginia-kayaking-1636005

First off, there is NO spider. No one collected a spider. No one brought a spider to the doctor to ID. Even if there had been an actual spider, since when have physicians become expert taxonomists and actually have the skills to identify arachnids or insects. Strangely, the story reports the woman didn’t even think much about the bite when it happened. Her words. Not mine. I really wonder about this mystery “spider.”

Secondly, the bite occurred, I presume, when she was paddling her kayak through a waterway. Brown Recluse spiders don’t make webs in the air, and certainly not over the water like that. Of course, I suppose it is possible for a spider to have been in the kayak, crawled up her legs and torso, and then crawled all the way up to her face where it bit her on the lip. You’d think she would have seen it. Also, Brown Recluse spiders like to live with other Brown Recluse spiders, so it’s difficult to imagine not finding a spider somewhere in the kayak to bring to the doctor.

Third. Lots of things can cause spider bite-looking lesions. I’m surprised the doctor declared it a Brown Recluse bite. There is no test to diagnose that someone has been bitten by a Brown Recluse. Again, no spider was brought in, so why was this deemed a spider bite when it could have been numerous other things? For instance, UC Riverside’s Department of Entomology webpage about Brown Recluse Spiders states,

The following can cause lesions similar to the lesion from a bite of a Brown Recluse spider …mites, bedbugs, a secondary Staphylococcus or Streptococcus bacterial infection and “Three different tick-inflicted maladies have been misdiagnosed as brown recluse bite: Lyme disease, Rocky Mountain Spotted Fever and the bite of the soft tick, Ornithodoros coriaceus. “

If you want to read more about this, you can check it out here – https://spiders.ucr.edu For a complete list of look-a-like medical conditions, I’ll refer you to this chart https://spiders.ucr.edu/causes-necrotic-wounds-other-brs-bites And, I’ll add my own too, “Various species of bees, wasps, and even thrips can cause lesions that appear to be the feared spider bite.” https://buggingyoufromsanjuanisland.com/category/thrips/

What about her hallucinations? My first thought was she has had an outbreak of a herpes lesion and could have developed herpes simplex encephalitis. Please DO look this up! I did. It’s one of the side effects of getting a nasty cold sore. https://rarediseases.org/rare-diseases/encephalitis-herpes-simplex/

Now, I’m not a doctor. I didn’t take this woman’s medical history. I’m just pointing out some OTHER possibilities. Possibilities that are actually much more likely than the sensationalized over-reaching claim it was a Brown Recluse spider. Hmmmm… Hysteria and hyperbole. I hope she recovers, and I hope she will be able to kayak again soon. I just wish there was a way to stop the inevitable slaughter of innocent spiders that will ensue. It’s a shame.

***Note*** We do NOT have Brown Recluse Spiders in the San Juan Islands. Please take a look at the attached distribution map and show it to anyone who tries to convince you otherwise. https://spiders.ucr.edu/spiders-map

Thanks for reading!

References:

A complete list of publications about the Brown Recluse Spider (Loxosceles reclusa) can be found here: https://spiders.ucr.edu/publications

https://www.amazon.com/Brown-Recluse-Spider-Richard-Vetter/dp/0801479851

https://bugguide.net/node/view/3349

Mystery Eggs Hatch

They hatched!

Well, I was wrong in my theory about these possibly being Nepytia phantasmaria or Phantom Hemlock Looper eggs, so my next steps will be to review all my moth photos from early September to try and thread out any other possibilities. That may take some time. Initial observation (date eggs laid) was Sept. 12, 2021. Today is Oct. 7, 2021. They are indeed pretty tiny and if you look closely, you can see the caterpillar body rolled up in the eggs that haven’t hatched. The tree is a Caucasian Fir (Abies nordmanniana).

eggs on Caucasian Fir, San Juan Island, WA 09.12.2021
eggs on Caucasian Fir, San Juan Island, WA 09.12.2021
Eggs darkening – September 18, 2021 San Juan Island
They hatched! Oct. 7, 2021

Mystery moth eggs hatch – October 7, 2021

Thanks for reading! Stay tuned for further updates. I’ll do my best to figure out an ID for these. 🙂

Autumn is for Arachnids!

Last month I held my 2nd annual virtual event, “September Spider Sleuthing in the San Juans.” Little did I know it would turn out to be so popular. Even the Journal of the San Juan Islands interviewed me. One of the questions asked was, “What led me to create the event in the first place?” Let me answer that for you.

Well, I happen to be an entomologist (someone who studies insects), but after living here for twelve years, I’ve come to LOVE the diversity of spiders that share our islands. I want to help others understand how important spiders are in our ecosystem and dispel some of the unfortunate and undeserved myths associated with our eight-legged friends.

This week, the spider sleuthing continues, albeit informally. I received some emails about spiders, and actually had two folks drop off spiders at my husband’s office in little cups for me to take a look at. “What ARE these?” inquiring minds wanted to know.

One was a suspected Black Widow that turned out to be a look-a-like False Widow (Steatoda grossa). While instinctively protective of the little sack of clustered eggs laid in a matrix of messy web in the plastic cup, I could sense she was alarmed. I was able to remove the lid and take a few photos without disturbing her too much. For now, she remains in the plastic cup. I may relocate her and her egg sack to our greenhouse tomorrow. Steatoda grossa spiders are not medically significant to humans. She’s a friend. Her presence helps keep the actual black widow spiders from colonizing our homes.

Steatoda grossa spider with egg sack
Steatoda grossa spider with egg sack
Steatoda grossa spider with egg sack
Steatoda grossa ventral view

The other cup held two spiders. All I knew ahead of picking them up was they were presumed deceased. One of those two spiders moved ever so slightly when I opened the lid. Where there is movement, there is LIFE! I was mesmerized with this spider, a Woodlouse hunter (Dysdera crocata). After photographing this beauty, I set it free in our stack of cut wood that doubles as a fence along the edge of our property. It will find plenty of isopods in the forest floor and the wood will double as a nice winter home with all its nooks and crevices. Woodlouse hunters are also harmless to humans. Consider them friendly!

Woodlouse Hunter (Dysdera crocata)

The last poor little soul was unfortunately frozen after it was collected. Yes, I opened the lid knowing this, but imagining movement, and hoping that maybe it hadn’t been frozen long enough to kill it. I don’t personally enjoy killing bugs. They’re much more interesting to me alive. I took the post mortem photos, but I’d have preferred being able to resurrect it.

Callobius severus

This sweet little dude is a Hackelmesh Weaver. His scientific name is Callobius severus. He’s harmless (a friend). He was only trying to find a mate. Male spiders often wander this time of year in search of a female. Look at those little palps! Those are the organs the male spider uses to transfer sperm to the female. They looks like little paws…or maybe tiny furry boxing gloves. I’m sorry this fella didn’t find a friend. May he R.I.P.

Callobius severus
Callobius severus

Thanks for reading!

Facebook Fail

The social media giant we all have become overly dependent on in recent years, had a big, giant F-A-I-L today. The entire site was down. I couldn’t share bug photos or look to see what crazy or amazing things my friends had been up to. I also couldn’t watch the fabulous video of the frog and bearded dragon that I’ve been replaying over, and over, and over because it’s so DARN cute! You can find it on Tik Tok if you can’t find it on Facebook.

In the void, I resorted to the fail safe backup. It’s called E-mail. I really feel old because I actually remember how we communicated before the advent of cyberspace – handwriting letters that you put a stamp on and eventually were delivered by USPS.

So, in my email, I actually had received two nice bug pictures I want to share with you. Victoria Compton (who is running for Friday Harbor Port Commissioner btw) sent these to me. The first, a caterpillar, is going to turn into my favorite moth, Lophocampa roseata or the Rosy Amelia Moth. The 2nd, is a ground beetle in the family Carabidae (Scaphinotus marginatus) – also sometimes called the Margined Snail-eating Carabid Beetle.

Happy Bug Viewing! Thanks for checking these out and thanks for sending the photos Victoria! You have my vote. 😉

Lophocampa roseata moth caterpillar

Scaphinotus marginatus Carabid beetle

Links to read more about these two bugs

Lophocampa roseatahttps://buggingyoufromsanjuanisland.com/2018/10/02/lophocampa-roseata-rosy-aemilia/

Lophocampa roseata https://bugguide.net/node/view/247272

Scaphinotus marginatus https://bugguide.net/node/view/327898

Spider Vivarium DIY

It’s wet and rainy out today, so I thought I’d share an indoor spider post for you to view. This isn’t my own, but I just watched it and it’s an informative, short, DIY on how to set up a vivarium for a jumping spider. Yes! Sometimes having a dog or a cat is impractical or impossible. Time, space, and affordability can impact our choice of animal companion. There’s also the environmental impact. 🤔 Hmmm, how many of us really consider that? On the enviro-scale, keeping a spider is far greener than probably any other pet you could choose. No greenhouse gases!

Eunuch or “U-neek” Eeek! Another Spider Sex Story!”

Yesterday I was literally in bed most of the day recovering from a precautionary step to prevent severe illness.   I felt like I had been in a bad auto accident, but that’s got to be better than actually having and/or dying from a virus, right?   Well, I used the time to read.  Mostly I read spider behavior stuff.  Believe me, some of these things are pretty interesting!  Spider sex for instance.  Who knew! I found this somewhat sensational spider story. This spider doesn’t live in the San Juans, but it’s so weird, I just have to share!  

DID YOU KNOW there is such thing as a Eunuch spider? (Tidarren sisyphoides), one of the Theridiidae or Tangle Web Spiders, AMPUTATES one of its own pedipalps (the male sex organs).  The species name (Tidarren sisyphoides) is a combination translation from Gosiute-Greek meaning ‘small male’.  Male spiders of this species are very tiny (1mm) in comparison to females ( only 1% the size of the female).  

According to R.J. Adams (2014) and Ramos et al (2004), Tidarren sisyphoides male spiders are born with, and develop two palps, just like other spiders, but at the penulitimate (next to last) molt (shedding of the exoskeleton as part of growth/development), the male spider amputates one of these palps ON PURPOSE!  

The amputation process isn’t done by chewing or anything of that sort.  The tiny spider wraps it in a silk scaffold, then dismembers the palp by twisting or moving around in circles until it breaks off.  The remaining palp is quite large in proportion to the 1mm sized body of this tiny spider, making up 10% of the total body mass. 

Why would the spider amputate one of its palps?  Well, turns out that males with one palp can move around and chase females much faster with only one palp.  It is supposed to give these guys an evolutionary reproductive advantage.  Males only mate once, so the reproductive drive is stronger than the drive to preserve one’s palp! Once he’s inserted that single palp, he will die within minutes,  still attached to the female. Hmmm, getting laid might not be so lucky depending on how you look at it.

After mating, the female will extricate the palp from her epigynum (the female reproductive receptacle).   While some other species of spiders are known to eat the male after mating, this species does not. She will merely discard the body.   

Interesed in reading more?  Check out these links, and read my blog about spider sex too! 

Adams, R. J., & Manolis, T. D. (2014). Field Guide to the Spiders of California and the Pacific Coast States (1st ed.). University of California Press. http://www.jstor.org/stable/10.1525/j.ctt5hjhpb

Kuntner, M., Agnarsson, I. and Li, D. (2015), The eunuch phenomenon: adaptive evolution of genital emasculation in sexually dimorphic spiders. Biol Rev, 90: 279-296. https://doi.org/10.1111/brv.12109

Ramos,M.,  Irschick, D. J., and Christenson, T.E.  2004. Overcoming an evolutionary conflict: Removal of a reproductive organ greatly increases locomotor performance. Proceedings of the National Academy of Sciences  101 (14) 4883-4887; DOI: 10.1073/pnas.0400324101 https://www.pnas.org/content/101/14/4883

The Teeny Tiny “Trashline Orb Weaver” – Yes, that’s really the name!

Trashline Orb Weaver (Cyclosa sp.) San Juan Island, WA 09.06.2021

I am very nearly blind when I try to see things up close, so it truly surprises me how I SEE things like the tiny “laundry” line of dead bugs this little orb weaver had strewn along a filmy thread between the boughs of our fir tree. At first, I thought it was just debris, stuck to the remnant of a spider thread, long abandoned. Upon closer inspection, I saw more threads and then my attention focused on the center, where I was able to discern what looked like teeny legs curled up around a body.

Trashline Orb Weaver

I used my clip on macro lens to get a better look. Indeed, there was a tiny spider in the center. I thought it was dead. That’s EXACTLY what the spider was hoping I’d think, and then I’d move on and the spider could enjoy the morning sun, and maybe a tiny bug for breakfast too.

Trashline Orb Weaver

Trashline Orb Weaver

I had a hard time getting decent photos. Even with the macro lens, focusing was tough. The wind would blow at just the WRONG second and I’d have to start all over again. I couldn’t find my tripod, but finally got a decent pole to help me balance, and went out to take photos at different times over a period of 2 days. I even went out last night and took a picture.

Awake or Sleeping? Trashline Orb Weaver (Cyclosa sp.) at night. San Juan Island 09.07.2021

It was fairly easy to identify the spider to Genus (Cyclosa), but species ???? . After going through the literature I had, I narrowed it to 2 possibilities, but reached out to Rod Crawford for help. Rod is the curator of arachnids at Seattle’s Burke Museum and this is what he says,

“Yes, it’s a Cyclosa. This time of year all Cyclosa are juvenile, and I for one cannot distinguish between our 2 species (C. conica, C. turbinata) as juveniles. However, C. conica is more common.”

So, my little spider with a laundry line of bugs is either Cyclosa conica or Cyclosa turbinata.

Why exactly do they string the debris along their web lines? Well, again, this debris is usually made up of dead bugs and other tiny bits of debris attached to the silk line. Typically, the spider is positioned somewhere in the middle, using the debris as camouflage against predators. Often, the female spiders’ egg sacks are attached to this “laundry line” too. I think laundry line sounds better than trash line, but I don’t think I get to rename the spider.

There are five species of Cyclosa spiders in North America, north of Mexico. I believe we only have the two mentioned by Rod here. I’m going back out to check on my new friend after I finish my post. Enjoy the day and remember to Be Nice to Spiders!

Thanks for reading.

References and Fun Reading

Eaton, E. 2012. Spider Sunday: Trashline Orb Weavers. Bug Eric Blogspot. http://bugeric.blogspot.com/2012/06/spider-sunday-trashline-orb-weavers.html

Bugguide.net. 2021. Genus Cyclosa – Trashline Orb Weavers. https://bugguide.net/node/view/1989

Trashline Orb Weavers. Missouri Department of Conservation. https://mdc.mo.gov/discover-nature/field-guide/trashline-orbweavers

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