© 2009-2016 C. L. Goforth. I can not stress enough how I truly DO NOT appreciate this natural wonder (or most bugs for that matter). Interesting that you saw so many of them at once. That’s not what I’d consider “normal” palo verde beetle behavior. Do they “hiss” at all? Adaptations. They’re very widespread. The same day, I caught an adult, and Zplock (r) bagged it and speed froze it in my freezer. Did make me laugh though. Unlike roaches, Palo Verde beetles are outdoor pests capable of … They are often attracted to lights, so she might fly off in search of better lights elsewhere. Oh, @dragonflywoman, there’s this giant sized black one – a full 3.5 “, I’d say, that we found last night walking in the backyard, along the patio! Nice bug , no doubt. Later, large quarter-sized holes in the soil near the roots of a tree during the monsoons give a visual indication of the beetle’s emergence.They surface in the wet, early monsoon season to mate over a 30-day period. If it’s in Romania, it’s not Derobrachus hovorei as it’s only found in the southwestern US. Hoping I can somehow get rid of them before they destroy the tree, or move in with me. The Palo Verde Root Borer is among the greatest of the Prionids in my opinion… Right below Macrodontia spp and Titanus Giganteus. It’s now morning, and he replaced the pot with a glass square vase, so we can see what’s going on, and to actually be able to see the creature. However, I’m unfamiliar with the insects in that part of the world, so I’m not sure what to recommend instead! Is this something we should be concerned about? Adult borer beetles look like a large cockroach. If you could send them to me at thedragonflywoman at outlook dot com, I can take a look and see what you’ve got! I know they extend into California, but I’m not sure how far north they go. I’m trying to think what the sound they make sounds like. Nearly all members of the group have these long antennae, including several important wood pest species (such as the Asian longhorn beetles). The palo verde beetles are wholly an American species, but you might have something very similar in your area! Is it a Derobrachus hovorei? Will be a different species in Turkey, but there are a lot of similar species! Your beetle looks like another beetle that’s fairly closely related (likely something else in the Prioninae subfamily), but the proportion of the antennae to the body aren’t right for D. hovorei and it’s in the wrong location. I doubt the sound you heard was a palo verde beetle, though I could be wrong. It’s not going to attack you or anything, so you’d just lift the vase off and let it go about its business. Hope you get to see many more cool things in Tucson! Thanks for the information. We’d like to keep the trees since they’re really established and provide good shade. In the 5 years of living here I’ve only encountered 3. I took pics at night since it’s the only time you can see them. It is, however, very hard to get at these beetles for treatment as they are often quite some ways underground. I have an interest in some insects,but these things are kind of creepy! There’s one thing the jaws aren’t used for though: feeding. they are gross and i hate them. Also known as Palo Verde root borers and grubs (in reference to larvae), Palo Verde beetles are aptly-named creatures that feed on the roots of distressed or dying Mexican Palo Verde trees as well as shrubs or citrus trees. I’m not that far from Texas you know , I just may have a palo beetle , let me know what you think !! If you dig up palo verde trees, you will supposedly nearly always find several palo verde beetle larvae happily munching away on the roots. Keeping it means a great new experience for your students, and that’s often a good thing. Many branches are dead, it barely leafed out, and there are many holes in the ground The palo verde beetle is no exception. This is my first summer to live in Tucson and I was totally caught off guard by these guys! I’d look for the Prionus genus of beetles on bugguide.net to browse some pictures that might include the one you saw – or at least it’s a good place to start! It’s a little unusual to find them indoors, but I would bet they’re either coming in as you go in and out at night (especially if there’s a porch light near your door, or they’re sneaking in to find a place to sleep during the day. Lar-vae hatch and bore directly into the pod under the egg. I am thankful your bog is here and still educating newbies 3 years later. I captured the beast in a shoe box and before leggings it go I did a quick search and found your article. The photo to the right is the larval stage of what will become a Palo verde root borer beetle (Derobrachus germinatus) pictured below. Verify informative. We lived way out in the desert a lot and learned how to survive and what native vegetation to eat, what could be used as medicine and how to fix it and soforth, and tonight my brother and I learned something new. They really are cool to watch flying. Great write-up and pictures! Why study them? In June and July, the larvae turn to adult beetles and exit the ground via small holes. You can send it to thedragonflywoman at outlook dot com. Not quite sure how to deal with it, we covered it with the closest thing at hand – a small empty pot (awaiting to house a plant) – hence with a hole at the base (no need for the beetle to bore one). I know bugs don’t recognize state lines, so if they are found in northern Nevada, they could easily make their way here. I kept the cup, and it shows the miniscule chew marks where it tried in various place in the cup before it settled in to finish it’s way through. The extension office should have an entomologist on staff, or at least Master Gardeners, who can help you with the identification. Look forward to seeing what you’ve got! Most notably, the entire life purpose of a Palo Verde beetle is to emerge from underground, find a mate, and immediately die. Check out the long, luxurious antennae: Palo verde beetles belong to the beetle family Cerambycidae, the longhorn beetles. Do you sell/trade? One of these scared the crap out of my gf tonight and your Web page got us answers on what just landed flailing in front of us. I don’t hear them in the closet anymore, so I’m assuming they’ve died. Felt sorry for the poor thing, so we put her on some potting soil inside a box with a lid and holes. Not happy & rather grossed out. They are nasty and scared the heck out of me ! Makes me want to get to the desert to explore even more! Of course! Once a male finds and mates with a female, the female will burrow into the soil at the base of trees and lay her eggs about a foot down. Its Frankensteinian appearance aside — check out that spiked thoracic collar straight outta Hot Topic! Thank you and its time to say goodbye to this uninvited guest. Daphne. Thanks again! Change ), You are commenting using your Twitter account. Sorry you’re getting them in your house though! Wow, what a crazy experience! The holes they leave in the ground are about the size of a quarter in diameter. I have a picture of this scary beast. (I know – they’re no longer allowed). There are several very large beetles that look similar in the same group, so that would be my best guess. Keeping any shrubs, citrus or olive trees, and particularly Mexican Palo Verde trees well maintained around your property is the first key to ensuring their roots aren’t rotting or decomposing. It’s a sort of overall weakening of the tree rather than obvious damage you can see. If I know my palo verde beetles, I would imagine it was holding its own against a cat fairly well! Well, keep up the posts. Palo verde beetles can cause some damage to trees, especially non-native ornamentals, but usually only in trees that are already having problems. — the palo verde beetle is harmless. I’ll try taking a pix. Get in touch with Burns Pest Elimination to talk more about Arizona beetles, or request your free quote today. Palo Verde beetles emerge during our summer monsoon season and can be a frightening sight on warm evenings. It’s that time of year: Across Arizona, giant beetles can be seen surfacing from the earth, startling residents and leaving them asking, “Is the Palo Verde beetle dangerous?”. They apear to have drowned but if you take them out they reanimate in a couple hours and usually end up back in the pool, not sure why since I don’t think they drink. The female lays eggs in holes about a foot deep under host Palo Verde trees where the grubs then feed on the roots. I do have pictures. You say base of tree ? they look like florida palmetto bug. After they hatch, beetle larvae eat the seeds, pupate and emerge as adult beetles through little holes they create in the seedpods. They’ve got all kinds of intimidating looking spines and beautiful eyes – gorgeous beetles if you give them a chance! I could see how you might think they look like palmetto bugs! Though I don’t have any numbers to truly support this, people seem to see a lot fewer of the palo verde beetles in Phoenix than they do in Tucson, which may explain why you’ve never seen one! At the same time male beetles, which they later learned had exited a few days earlier, began to fly in and proceeded to mate with the females. Mostly though, the beetles use those impressive mandibles for fighting and/or mating. Post was not sent - check your email addresses! In New Mexico, they are called the mesquite root borer because of their preference for mesquite roots. Early in the season, after the seeds have begun to expand, the primary seed predator Mimosestes amicus (Horn) (Bruchidae), glues its eggs securely on the green pods. would you happen to know anybody that would want to purchase these interesting (Palo Verde Beetles ) LOL my husband and myself both were Bit while just sitting around with those vicious pinchers mandibles as you Call them. I need to know how to overcome my fear of these things. The palo verde beetles wouldn’t be eating the branches of your tree even it does have them, but I’m not sure what else it would be. they look like a huge cockroach more them a bettle. However, they will also eat the roots of other broad-leafed trees and shrubs. On a recent segment from 12NEWS KPNX, Burns Pest Elimination was featured to inform the public more about this bug, its lifecycle, and to what degree it’s a cause for concern. I’ll try and video it if I can. This a truly impressive beetle. Were they trying to burrow? Needless to say, they are all freaked out. I live in Tucson, and true to Monsoon season, there are so very many of these guys bobbling around outside and, despite a lack of general beetle love, we live in harmony.. Last night, however, I experienced a whole new level of horror. If the beetle’s that big, out at this time of year, and from Arizona, it’s almost got to be a palo verde beetle! There is a Mexican Bird of Paradise (BOP) tree near the Iris patch which produces a copious amount of seed. Larvae stay in the roots for 2-4 years before maturing into adults. Learn about the Palo Verde beetle in Arizona and how Burns can help with pest control and prevention tips. And they’re stunning! I think I need to go into therapy! Our backyard has about 4 wandering around right now…. I’ve read up on these cool dudes but all websites only mention america. Plants are at the base of food webs and any change in a plant community can have an impact on all organisms that feed higher up the food web. We live in Valencia, Spain (east coast on the med.) Scared me at first. She can’t seem to stay on her legs. All I can say is that the beetles are probably only hurting the tree at this point because it was doing poorly enough that their nibbling on the roots is actually stressing the tree. Image of Palo Verde Borer Grub by Lucy K. Bradley. The adult emerges when the monsoons arrive and dig their way up to the surface, leaving large round holes around the base of the tree where they grew up. They would be more likely to have an answer for you. But, you should talk to someone in your area for more specific information about what you can do about it. I never saw or heard of them before so it came as quite a surprise when I was awakened in the middle of the night by a small flying chihuahua, zipping about in the dark, slamming into things and falling. Spraying chemicals around your trees or inside the holes near roots won’t do much good, especially if the beetles have already left from underground. Keeping it trapped will likely result in a dead palo verde beetle in a few days. The larvae of two bruchid beetles exploit the Palo Verde seeds while the pods are developing on the tree. After searching with the lights on, I thought I’d find something I might have seen before… During the week that followed, I found a few more, having drowned in my pool. It’s pretty pathetic! It’s an old house and has mulberry trees in the front yard. Meet the palo verde beetle (or palo verde root borer beetle), Derobrachus hovorei: I think these beetles are one of the best parts of living in the Sonoran Desert. 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