Blister Beetles

Meloe strigulosus
Ventral view
San Juan Island, WA 11/2/2019

I posted back in April about an encounter with Blister Beetles not far from my house. You can read about that here ~ (https://cynthiabrast.wordpress.com/2019/04/16/a-blistery-spring-day/ ). Over the weekend of November 2-3, I came across quite a few more of these in the exact same spot as in April. This time I didn’t see any live beetles, but there were at least 25-30 dead in the road.

Meloe strigulosus
San Juan Island, WA
11/2/2019

Ever the opportunist, I scraped up as many that weren’t quite so smushed into a container and brought them home. Out of the 5 I collected, 2 were male, 2 were female, and one missed antennae altogether. Given the number of beetles in the road in this one spot, I believe this was a mating aggregation.

Meloe strigulosus (male)
San Juan Island, WA
11/2/2019

So, I’ve been reading about them and communicating with a two experts on blister beetles. If you don’t know what these are, they are significant because of a defensive chemical in them called Cantharidin. Cantharidin is quite toxic and it’s a blistering agent. This is where they got the name Blister Beetles in the first place.

antennal segmentation of male Meloe strigulosus
San Juan Island, WA
11/2/2019

Since my first sighting of these beetles back in April, I’ve learned quite a bit about them. The ones here (Meloe strigulosus) are black, flightless, tanker-like beetles, carrying around a cargo of toxic brew. They are sometimes a hazard to livestock (actually almost all mammals) that might eat them because the Cantharidin is toxic. Horses, goats, cows, and sheep that eat alfalfa hay can get really sick with colic if there are even parts of dead beetles in the hay.

While we don’t really know exactly how Cantharidin is produced in the beetle, we do know these two things: 1) it’s produced in the male and transferred to the female during mating. 2) the female transfers Cantharidin as a protective coating for her eggs during oviposition. It’s believed that the first instar larvae (called triungulin) are equipped with a supply of Cantharidin as well.

After hatching, the triungulin crawl up onto flowers to hang out and wait to attach to the hairs of a visiting bee, riding back to its nesting site. The later developmental stages of larvae are protected underground or in holes in wood where native bees are developing. They consume the developing bee eggs, larvae and nest provisions (pollen and nectar).

Is there anything good about blister beetles? Well, strangely, the populations of some species of blister beetles are timed to coincide with grasshopper abundance. Adult blister beetles feed on grasshopper eggs. That’s good, right?

What else? Humans have used Cantharidin for years to remove warts and to remove tattoos as well. For ages, it has been used as a sexual stimulant. Even birds called Great Bustards have picked up on this! Read more here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6521026/

Blister beetles seem to be beneficial to some other species of beetles too. There is one beetle that actually has been found to chew on the blister beetle as a means of obtaining Cantharidin for its own protection. Other animals like toads, frogs, and armadillos are known to eat these beetles or use them in some way to confer protection. There is even a nuthatch that uses the beetle to “sweep” the wood where it wants to build a nest to protect it from parasites.

Back to my weekend sighting and collection of a few of these specimens. I had two that were intact enough to pin for my collection. I wore nitrile gloves to make sure I didn’t come into contact with any blistering agent. It’s a good thing I did. Some fluid made contact with one of the fingers of my gloved hand and actually started eating through it. That’s pretty caustic!

If you’re interested in more information about them, I’m happy to email some of my collected literature. There are also links you can check out in my previous post from April.

Thanks for reading!

Neophasia menapia – Pine White Butterfly

It was breezy earlier this afternoon when I spotted this beauty feeding on my daisies. This is a Neophasia menapia – or the Pine White Butterfly. I’ve been worried since we’ve put up deer fencing that the butterflies wouldn’t be able to find their way through the fence into my flower garden, but I shouldn’t have worried. The butterflies ever-so-gracefully float over the top.

I’m sure the butterflies and other pollinators appreciate that my daisies aren’t headless amputees this year, courtesy of our resident deer who now can only gaze at them. It’s hard to understand why the deer would even want to eat those flowers because they’re kind of stinky. To my nose, they smell a bit of cat urine. Lots of insects seem to like those sorts of smells though. These daisies can stay outside. I won’t be displaying them in a vase on my dining table.

Pine White Butterfly on Daisy
Neophasia menapia 
July 26, 2019
San Juan Island, WA

The Pine White Butterfly larvae feed on Ponderosa Pine and Douglas fir. Adults emerge typically between the months of July and October. Look for little green eggs on the needles of pines and firs sometime beginning in October. The eggs will overwinter and hatch sometime in June the following summer, coinciding with the emergence of new foliage on the trees. Larvae typically only feed on old needles, but can become a “pest” when they feed on the new needles and/or population levels are high and the tree is repeatedly defoliated. Natural controls help keep caterpillar populations balanced. Larvae pupate in late July for about 15-20 days before emerging as adults to begin a new cycle.

Pine White Butterfly (Neophasia menapia ) on Daisy
July 26, 2019
San Juan Island, WA

Would you like to read more? Check out the links I’ve added below.

https://bugguide.net/node/view/69083

https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5347775.pdf

http://web.forestry.ubc.ca/fetch21/FRST308/lab5/neophasia_menapia/pine.html

Xestoleptura crassipes

Xestoleptura crassipes
San Juan Island, WA
July 16, 2019

Xestoleptura crassipes is a species of flower longhorn beetle. Taxonomically it is placed in order Coleoptera, family Cerambycidae. The species name “crassipes” means “thick-legged.” Adults are attracted to flowers (June-September) and larvae are wood borers, found in forested areas and associated with firs and oaks. Adult body length approximately 10-17mm.

I photographed this specimen on July 16, 2019. It was the only one on the daisy plant by my front door. On the morning of July 18, there remained the single beetle (or I believed it to be the same one). That evening, I observed a 2nd beetle feeding on an adjacent flower. This morning (July 19th, 2019), they were both gone. Perhaps this was a successful meetup for finding a mate. 🌼

Xestoleptura crassipes feeding on daisy pollen

Harmonia axyridis, The Asian-Spotted Ladybird Beetle

I found this weird little creature stuck to a leaf on a rose bush by the picket fence in front of the San Juan County Land Bank office on Monday, June 24, 2019 when I walked down Argyle and rounded the corner onto Caines (does anyone on the island actually use street names? Where the heck is Caines, right?) 

Ladybird pupal case, June 24, 2019

Brought it home because I couldn’t resist the mystery of figuring out what it might be.  What on earth are those spiny things at the end? Is it some sort of pest insect?   

Ladybird pupal case
June 24, 2010

After taking a few photos, I did what drives my husband crazy sometimes.  I left the leaf with this little spiny-ended thing on the table, in a cup, without a lid.  Yep.  Just like when I left the really fat deer tick I had on my desk.  The one that laid eggs…that hatched when I wasn’t paying attention.  This is when it’s really handy to have sticky tape nearby, otherwise you have to vacuum every 10 minutes for about a month to finally sleep at night without feeling like things are crawling all over you and burrowing into your skin. This link should take you to my facebook page post about “Big Bertha.” https://www.facebook.com/buggingyoufromSJI/posts/2375866245969416

This morning, after my cat got me up with incessant meowing right in my ear, I sat down at the table with a cup of coffee. Millhouse (the cat) isn’t supposed to be on the table, but when my husband isn’t around, anything goes!  He was staring something down that was m.o.v.i.n.g!  Fortunately, I reacted faster than he did.  I tipped over the little medicine cup I’d put the leaf in to thwart this little creature’s attempt at a fast getaway.  

Asian Spotted Ladybird Beetle (Harmonia axyridis)
July 27, 2019
San Juan Island, WA

Carefully sliding a piece of paper under the cup, I could see it looked like a ladybug.  Ladybugs come in different colors, with different spots, and there are quite a few species one could encounter on San Juan Island.  This beetle goes by an assortment of names.  It’s often referred to as the Multi-colored Asian Lady Beetle or sometimes the Halloween Beetle because in some places they show up in large numbers at Halloween! 🎃😱

This beetle’s scientific name is Harmonia axyridis (The Asian-spotted Ladybird Beetle).  It was imported to the United States as early as 1916 to help control pests as a biocontrol agent.  While “Miss Harmonia” eats aphids, thrips, and scale insects (and manages these pests fantastically in soybean crops), she isn’t native and these pest insects aren’t all she eats.  Asian-spotted Ladybird Beetles also eat native coccinellid beetles (native lady bugs) and even butterfly eggs.  In the winter, she can bring her friends and invade your home.  When handled, the ladybird beetles can excrete a stinky defensive chemical from their leg joints.  This makes removal of large numbers of them from inside homes somewhat problematic.  You don’t want to have them discharging this awful odor that will linger….all…winter! 

Newly emerged adult (Harmonia axyridis)
June 27, 2019
San Juan Island, WA

Another unfortunate consequence of importing these beetles is their love of wine grapes.  🍇 🍷 Asian-spotted ladybirds will eat grapes and then the grapes end up contaminated with an awful smell lingering on them.  While I personally don’t drink wine, I know lots of people do and they’d be very unhappy if it tasted like essence of ladybug…a twist on a new aromatic bitter perhaps! 

Did I squish her? Nope.  I put her in the tree near our bird feeder.  It’s possible she will become part of the food chain.  While not all birds eat these beetles, some do. Insects and arachnids like robber flies, dragonflies, ants, various ground beetles, and cellar spiders also eat them.   

If you see them, should you squish them?  That’s up to you and how confident you are that you’ve identified it correctly. I wouldn’t want to mistake a helpful native ladybug as an invader.  I recommend that instead of buying ladybird beetles at the garden store to release in your garden you establish native habitat to attract and support native species of ladybugs.

As I looked a bit more into the literature about Harmonia axyridis, I was intrigued with the publication of some research about the biochemistry of the liquid they secrete.  It has been found to have strong antimicrobial action against strains of bacteria that are pathogenic to humans. This fluid has even been examined for its action against malaria.  Perhaps these beetles don’t belong in the garden, but in your medicine cabinet instead.  

empty pupal case
Asian spotted Ladybird Beetle (Harmonia axyridis)
July 27 2019
San Juan Island, WA

References and further reading

  1. https://plunketts.net/blog/ladybugs-vs-asian-lady-beetles/
  2. https://royalsocietypublishing.org/doi/full/10.1098/rsbl.2011.0760?url_ver=Z39.88-2003&rfr_id=ori%3Arid%3Acrossref.org&rfr_dat=cr_pub%3Dpubmed&
  3. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC524671/
  4. https://bugguide.net/node/view/397

A Blistery Spring Day

I walked down the road last Tuesday (April 9, 2019) with my husband.  It was late afternoon and although it rained a bit earlier that morning, the sun was peeking out.   The wind wasn’t blowing, but it was soon to be a Blistery Spring day!

If you know any entomologists, you’ll understand rule #1 about going on ANY walk is to take a collection jar and a camera.  Last week, I failed to do this and missed an opportunity to identify and document this very cool bumble bee mimicking fly (genus Laphria ~ a bee-like robber fly).  This time I made certain to take my phone.  Sure enough, at the bottom of the hill, I see a black beetle crawling about on the chip-sealed road.  Fortunately, I refrained from my very bad habit of grabbing things with my bare hands. This is one beetle you do NOT want to pick up!  It was a BLISTER BEETLE.

Lucky me! I came home with some great photos and some video footage instead of a dermatological eruption that would have landed me in the doctor’s office.  I left the beetle in the road to continue whatever it was doing.

Back at home, I used my reference books to compare the photos and video I took of the beetle and narrowed down an ID to the genus Meloe.  I would need more help figure out the species.  I sent some photos off to Merrill Peterson at WSU with the suggestion that it might be a male Meloe niger.  Merrill wrote back that he thought it was M. strigulosus, but hard to confirm with only a photo.  He agreed it was indeed a male.

Meloe niger Black Meloe Blister Beetle

Meloe strigulosus (male)

You might ask how one goes about determining whether a particular beetle is male or female.  Often, as in this case, the male antennal segments are larger or varied in shape from the female.  This beetle’s antennae had a distinctive kinked platform on their fifth segment.  I would learn later that this kinked part enables them to grasp the antennae of the female during mating.

Meloe strigulosus (male)

Meloe strigulosus photo by Cynthia Brast April 9, 2019 Three Corner Lake Road San Juan Island, WA

Antennae

kink in antennal segment of M. strigulosus (male)

Merrill also sent me a link to what I will refer to as the Blister Beetle bible.  Published in 1970, this research was compiled by the legendary systematics entomologist, John D. Pinto, currently professor emeritus at U.C. Riverside with Richard B. Selander.  Hopeful, I sent off my photos in an email to Dr. Pinto and felt really privileged when I got an almost immediate response.

According to Dr. Pinto, the specimen I photographed was indeed a male Meloe strigulosus.  If you’re interested, you can read “The bionomics of blister beetles of the genus Meloe and a classification of the New World species”by linking here https://archive.org/details/bionomicsofblist42pint  Aside from the wealth of information published in this book, I love the artistic rendering of the female beetle on the cover.

Screen Shot 2019-04-15 at 11.53.12 AM.png

Illustration from Pinto and Selander’s “The bionomics of blister beetles of the genus Meloe and a classification of the New World species.” 

According to Dr. Pinto, there are 22 species of Meloidae in North America.  They are named Blister Beetles because they release a toxic terpenoid blistering agent called cantharadin when they are threatened or handled.  Sometimes people call them “Oil Beetles” because it’s oily. You can find the chemical profile of cantharadin here ~ https://pubchem.ncbi.nlm.nih.gov/compound/cantharidin#section=Drug-Indication

Curiously, this toxic secretion has been utilized to treat various medical conditions.  Among these was the topical application of the “oil” to treat rheumatism or to remove warts and lesions of Molluscum contagiosum, a contagious, viral infection of the skin (https://www.mayoclinic.org/diseases-conditions/molluscum-contagiosum/symptoms-causes/syc-20375226).  Cantharidin is also famously known for its use as an aphrodisiac (Spanish Fly).   This substance was historically used as a treatment for hydrophobia (rabies).  Male beetles were preserved in honey, mixed with other equally toxic ingredients then administered in an attempt to cure the patient. Maybe dying from cantharadin poisoning was less traumatic than dying of rabies.

Blister beetles are economically important because they contaminate alfalfa hay and they are highly toxic to livestock, especially horses.  There are instances where a horse has died from ingesting just ONE beetle. According to this Colorado State Extension publication (https://extension.colostate.edu/topic-areas/insects/blister-beetles-in-forage-crops-5-524/), just the release of cantharadin oil from the beetle can contaminate the hay.  Although reports of cantharadin poisoning in livestock are rare in the West, here’s one case where someone’s goat became very sick from ingesting hay contaminated with cantharidin ~ https://www.vetmed.ucdavis.edu/news/uc-davis-veterinarians-discover-blister-beetle-toxicity-goat

Another interesting fact about these beetles is that the larvae are phoretic parasites of solitary bees and grasshopper egg pods.  The first instar larvae, called triungulins” crawl onto flowers to await a visiting bee, then hitch a ride back to the nest where they will consume the pollen, nectar, and even the bee larvae.  Check out this link from National Geographic to view some extraordinary images of bees covered with blister beetle larvae ~ https://www.nationalgeographic.com/animals/2018/09/bees-blister-beetles-evolution-parasites-pheromones-news/

This was the first blister beetle I’ve seen on San Juan Island, but I do know of one other sighting by San Juan County Land Bank steward, Doug. M. from April of 2016.  I sent the photo of Doug’s beetle to Dr. Pinto as well and this was his reply, “Very likely M. niger – tho the photo is a little fuzzy for positive ID.”  Doug’s photo of the “likely” M. niger below.   

Meloe niger 2016-04-07 14.38.37

Meloe niger Mount Ben, San Juan Island, WA, April 2016                                                                     Photo by Doug. M. San Juan County Land Bank

If you’d like to read more about the particular species of blister beetle I found, I’m including the taxonomic key and geographic distribution data from Dr. Pinto’s book below.

                                               Meloe (Meloe) strigulosus Mannerheim


 Direct Key To The New World Subgenera of Meloe

Key to New World Subgenera of Meloe

Key to New World Subgenera of Meloe Pinto and Selander, 1970

Direct Key to the New World Subgenera page 104.

Direct Key to the New World Subgenera of Meloe page 104 Pinto and Selander, 1970

Key to Groups

Key to Groups p. 124

Key to Groups Bionomics of Blister Beetles Pinto and Selander, 1970

Direct Key to Groups page 157

Key to Groups Bionomics of Blister Beetles Pinto and Selander, 1970

 Geographic distribution

Geographic.distribution of M. strigulosus  p. 159

Geographic Distribution of Meloe strigulosus Pinto and Selander, 1970

Larval Key Meloe strigulosus

Larval.key.1

Larval key Meloe strigulosus Pinto and Selander, 1970

Larval.key.2

Larval key for M. strigulosus Pinto and Selander 1970

Antennal illustrations for male Meloe strigulosus, Figure 125 a. Dorsal view of segments V-VII, and b. Posterior view of segments V-VII

Male Antennae

Male antennae M. strigulosus Pinto and Selander, 1970

Antennal illustrations for female Meloe strigulosus, Figure 140

Female Antennae

Female Antennae M. strigulosus Pinto and Selander, 1970

References

Bittell, J. 2018.  Sex, Lies, and Grappling Hooks: How Parasitic Beetles Trick Bees. Animals Weird and Wild. National Geographic.  https://www.nationalgeographic.com/animals/2018/09/bees-blister-beetles-evolution-parasites-pheromones-news/

Hafernik, John and Saul-Gershenz, Leslie. 2000. Beetle larvae cooperate to mimic bees. Nature. 405. 35-6. 10.1038/35011129.

Kinney, K.K., F.B. Peairs and A.M. Swinker. 2010.  Blister Beetles in Forage Crops. Colorado State University Extension Publication 5.524. https://extension.colostate.edu/topic-areas/insects/blister-beetles-in-forage-crops-5-524/

Mayo Clinic. Mulluscum contagiosum. https://www.mayoclinic.org/diseases-conditions/molluscum-contagiosum/symptoms-causes/syc-20375226(accessed on Apr. 16, 2019)

National Center for Biotechnology Information. PubChem Database. Cantharidin, CID=5944, https://pubchem.ncbi.nlm.nih.gov/compound/5944 (accessed on Apr. 16, 2019)

Peterson, M. A. 2018. Pacific Northwest insectshttps://www.amazon.com/Pacific-Northwest-Insects-Merrill-Peterson/dp/0914516183

Pinto, J.D. and R.B. Selander. 1970. The bionomics of blister beetles of the genus Meloe and a classification of the New World species. Illinois Biological Monographs 42: 1-222.  https://archive.org/details/bionomicsofblist42pint

Piuser, J. 2017. UC Davis Veterinarians Discover Blister Beetle Toxicity in Goat. U.C. Davis Veterinary Medicine.  https://www.vetmed.ucdavis.edu/news/uc-davis-veterinarians-discover-blister-beetle-toxicity-goat

Quinn, M. Blister Beetles of Texas. Texas Beetle Resources. http://texasento.net/TXMeloidae.html#Meloe  (accessed on Apr. 16, 2019)

Itchy-Scratchy!

Just in time for Halloween!  Yesterday I was using the Scanning Electron Microscope (SEM) at Friday Harbor Marine Labs.  I got to take some really cool photos but in order to use the SEM, your specimen has to be dried out.  Well, I had some specimens that are really tiny and very delicate and they weren’t dried out because it is a complicated process that takes a certain chemical called Hexamethyldisilazane (HMDS).  Also, drying out your specimen for viewing under the SEM renders it useless for viewing under a light microscope and you’ve lost the ability to preserve it in a collection.

So I’m going to share how I took images of some of my specimens at home with a pretty old compound microscope, an iPhone, and a clip-on macro lens from Amazon.   First, I’ll tell you a bit about the compound microscope image posted here.  This specimen is in the genus Damalinia, most likely the exotic chewing louse, Damalinia (Cervicola).

IMG_7536

Chewing louse Damalinia spp

It lives on black-tailed deer (Odocoileus hemionus columbianus) in Washington, Oregon and California, and has been indicated in what is called HLS (Hair-loss syndrome).  They build up in large numbers on deer at certain times of the year.  One factor thought to contribute to this is lack of adequate nutrition in the deers’ diet, particularly an absence or deficiency of Selenium.

In a nutshell, these lice can reproduce at high numbers in vulnerable deer (typically old, young, and those with weakened immune systems due to nutritional deficiencies or internal parasites).  The lice cause extreme itching, irritation, and hair loss.  The deer respond to the itchiness by excessive licking and grooming.   Why hair loss? Well, these lice are called “chewing lice” because they munch on hair, skin fragments and secretions, and in some cases will feed on blood from skin wounded from scratching.  It’s a miserable condition to have.  This is what a deer looks like that is suffering from HLS caused by the chewing lice.

hairloss

Photo by Brian Murray  https://www.dfw.state.or.us/wildlife/health_program/hairloss/index.asp

Here is a larger version of my photo.  It’s not as clear as I’d like, but I’m certainly going to practice to improve. Happy Halloween and I hope you don’t spend the night scrrraatching in bed!

IMG_7537

Chewing louse Damalinia spp.

Further reading and references:

Protocol for drying insects with HDMS: https://www.cdfa.ca.gov/plant/ppd/entomology/HMDS.html

Link to Amazon clip on iPhone lens set ~

Robinson, J. (2007). Transmission of the chewing louse, Damalinia (Cervicola) sp., from Columbian black-tailed deer (Odocoileus hemionus columbianus) to Rocky Mountain mule deer (Odocoileus hemionus hemionus) and its role in deer hair-loss syndrome. Masters Thesis. Oregon State University. https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/1v53k0068?locale=en

Roug, A., Swift, P., Puschner, B., Gerstenberg, G., Mertins, JW, Johnson, CK, et al. (2016). Exotic pediculosis and hair-loss syndrome in deer (Odocoileus hemionus) populations in California. Journal of Veterinary Diagnostic Investigation, 28(4), 399-407. http://journals.sagepub.com/doi/10.1177/1040638716647154

Maude, R. J., Koh, G. C., & Silamut, K. (2008). Taking photographs with a microscope. The American journal of tropical medicine and hygiene, 79(3), 471-2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2843439/

Smartphone Microscopy by Annie Morrison.  Youtube.

 

 

 

 

 

Scanning Electron Images of a Cerambycid Beetle

Yesterday I had the extreme good fortune to be able to use the scanning electron microscope (SEM) at University of Washington’s Friday Harbor Labs (San Juan Island).  We put a Cerambycid beetle under the SEM and “WOW,” the photos were phenomenal!  Here’s a few for you to see.  Below is a photo of the beetle’s compound eye.  Just think of all the information each of those facets receives and processes.

IMG_7528

Cerambycid beetle compound eye, imaged under scanning electron microscope at Friday Harbor Labs, San Juan Island, WA

Next, you see an image of the beetle head.  It shows the antennal insertion points, the compound eyes, frons, clypeus, labrum, mandibles, and bristly setae.

IMG_7526

SEM anterior, dorsal view of cerambycid head.

If you’re interested in learning more about the morphological features, here’s a pretty good diagram below for reference.

morph12

image from http://www.faculty.ucr.edu/~legneref/biotact/bc-51b.htm

The last image for you is of the beetle’s tarsi (the foot).  This is an important identification feature for many insects.  Imagine that!  When I was working on my masters degree from the University of Florida, I had an amazing taxonomy professor who was an expert on Coleoptera (the beetles).   He created identification keys for Florida beetles and you can take a look at them here:  http://www.entnemdept.ufl.edu/choate/beetles.pdf IMG_7525.JPGWell, I’m looking forward to using the SEM again and my next imaging will hopefully include the sponging mouthparts of a fly.   Stay tuned!

Heterosilpha ramosa (Say 1823)

I found this specimen October, 20, 2018 when I went for a walk and I’m excited to add it to my insect checklist.  This is the larva of the beetle Heterosilpha ramosa, also known as the Prairie or Garden Carrion Beetle.  It is classified within the family Silphidae, a group of beetles named after their preference for dining on carrion.  Both adult and larval forms of carrion beetles typically feed on dead things.  There are two subfamilies within the Silphidae.  The Silphinae and the Nicrophorinae.  Nicrophorus beetles actually have bi-parental care of their young, but that’s for another post!

The strange thing about Heterosilpha ramosa is that it doesn’t quite fit the category it’s been placed into.  There isn’t much online either to help with the derivation of its name, but this is what I’ve put together.  For the genus:  Hetero meaning different or other and Silphidwhich comes from the Greek word silphe,a kind of beetle.”  The species name, ramosa means “full of branches” and refers to the beetle’s branched elytral costae or the main veins on the leading edge of an insect wing.  I love looking up the name derivations for insects.  Curiously, we get ramosa from “Ramos,” a Spanish or Portuguese name derived from the Latin “ramus” to describe someone who lived in a thickly wooded area.

Yes, I digressed a bit! Back to the feeding habits of this creature and its name:  Heterosilpha.  Instead of only eating carrion, it is a generalist feeder which means it eats lots of different things, other than carrion!  The common name, Garden or Prairie Carrion beetle refers to its habit of feeding on plant detritus and sometimes even nibbling the leaves and roots of living plants you may have in the garden.  Generally it is believed to do more good than harm in gardens or crop systems since it feeds on snails and other invertebrate pests.

Heterosilpha ramosa larva IMG_7448

Heterosilpha ramosa larva photo by Cynthia Brast October 20, 2018 San Juan Island, WA

In my search, I also found out that this is yet another understudied creature.  It is unfortunate that we know so little about the world that exists under our feet!  Here is a photo of an adult Heterosilpha ramosa.   For now, I am waiting to see if the larva I found pupates.  Check back for updates and be sure to look for interesting bugs next time you’re out on a walk!

Heterosilpha.ramosa.adult

Photo credit to https://insectsofsouthernontario.ca/heterospila-ramosa/

 

 

 

 

 

Revenge of the Mantids

clip mantis Check out my story about praying mantids on San Juan Island!  They’ve been a victim of hyper-sensationalism.  Seriously.  Read my article before you squish one.

https://sanjuanislander.com/news-articles/environment-science-whales/environment/28146/revenge-of-the-mantids

Merlin.mantid

Let me know if you have questions about these or other insects you come across!  I’m always interested and do my best to answer emails.  Thanks!

 

Lophocampa roseata (Rosy aemilia)

I spent a good part of the day combing through my insect photos from the past 9 years. There are thousands. Finally, I found the ones I was searching for. I credit Victoria Compton on San Juan Island, WA  for helping me out on this one. She sent a photo the other day to my email with a caterpillar and had suggested an ID. Not only was she correct, but in ID’ing the caterpillar, it enabled me to match up one of my adult moth photos that had been sitting around nameless since 2016. The photos I found today were of the same caterpillar that had been a mystery to me since 2013. It’s a nice “aha” moment when you connect the dots! Below are the pics for you to see.

Lophocampa.roseata.July10,2016IMG_3310

Lophocampa roseata Photographed July 10, 2016 San Juan Island, WA


Photo0092

Lophocampa roseata larva Photographed October 6, 2013 San Juan Island, WA

This is a Tiger moth in the family Erebidae, subfamily Arctiinae. The scientific name is Lophocampa roseata (also known as the Rosy aemilia). It was first described by Francis Walker in 1868.  They are found in Western Oregon and Washington as well as in Southwestern B.C. and are associated with habitats of conifer forests and maple trees. The sources I checked list them as somewhat rare and Natureserve lists them as “critically imperiled.” So, I guess we have another beautiful Lepidoptera on San Juan Island to care for along with the Marble Butterfly!

***Critically imperiled Tiger Moth. Please post/email photos if you live in San Juan County, WA and come across one in the adult or larval stage.  Thanks! 

Photo0091

Lophocampa roseata larva Photographed October 6, 2013 by Cynthia Brast San Juan Island, WA


20180926_133138

Lophocampa roseata larva Photographed September 26, 2018by Victoria Compton San Juan Island, WA 

Helpful links:

http://explorer.natureserve.org/servlet/NatureServe?searchName=Lophocampa+roseata

https://www.inaturalist.org/taxa/224121-Lophocampa-roseata

https://www.butterfliesandmoths.org/species/Lophocampa-roseata

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

Lophocampa roseata larva
October 27, 2019
Three Corner Lake Road
Lophocampa roseata pupal case
Pupated 10-29-19

Lophocampa roseata larva
Found wandering in search of pupation site – October 27, 2019
San Juan Island, WA
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  • "BUGGING" YOU FROM FRIDAY HARBOR!

    "BUGGING" YOU FROM FRIDAY HARBOR!

    I love beetles and keep bees! In my free time, I enjoy photography (mostly bugs) and documenting insect species found on San Juan Island. I have limited availability for local, onsite beekeeping consultation and hive inspection, honey bee removal/swarm collection as well as phone/skype consultation. Contact me at cynthiabrast@icloud.com Member Washington State Beekeepers Association

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