Currently viewing the category: "Beetles"
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Subject: Flying beetle
Location: Indio, CA. March 28, 2015
March 28, 2015 3:02 pm
Looks like swarms of this guy’s companions perished on our pool. Body about 1/4″ long. I fished this one out and photographed it as he dried off. Then he flew off shortly after the BUG 1 pic was taken. We have a lot of grass, trees and hedges around our lot.
Signature: Tony

Possibly Monkey Beetle

Possibly Monkey Beetle

Dear Tony,
We believe your Scarab Beetle is a Monkey Beetle in the genus
Hoplia, possibly Hoplia callipyge based on images and the range information on BugGuide.  According to BugGuide:  “Adults feed on flowers and foliage, often in groups … Larvae feed on roots of various plants during the summer, hibernate in a late instar, pupate in soil in spring; adults emerge in spring … Some are considered pests of ornamental plants and grapevines, especially H. callipyge.”

Monkey Beetle, we believe

Monkey Beetle, we believe


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Subject: Large noisy beetles
Location: Costa Blanca, Spain
March 31, 2015 3:41 am
Hello, we live in Spain, on the East coast, near lots of pines. In the last few days the weather has warmed up and the giant flying beetles have come out. I know they are harmless but they scare me! They bump into things a lot and seem most active during the hot part of the day. Are they a form of wood boring beetle or a jewel beetle? They are huge – abut 1.5-2 inches. The back is irridescent greeny brown, (like camouflage) with white markings.
Signature: LloJo

Jewel Beetle

Jewel Beetle

Dear LloJo,
You are correct that this is a Jewel Beetle or Metallic Borer Beetle in the family Buprestidae.  We believe we have identified it as
Chalcophora mariana on FlickR.  A subsequent search found it listed on the Invasive and Exotic Species of North America site where the common name Flatheaded Pine Borer is used.  According to INPN (Inventaire National du Patrimoine Naturel) the indigenous range is France and Spain.  Perhaps the most amusing information we found is that you can order a 60×37 inch Peel and Stick Removable Graphic Wall Decal from Amazon for only $99.99 plus $7.99 shipping.

Ha ha! That would be truly terrifying!
Thanks soooo much for your very quick response! Lots of great info for me to google…
Thanks once again

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Subject: What’s this bug?
Location: Southern California/High Desert
March 30, 2015 8:29 am
I found a really pretty green beetle on campus today. Some mean boys were throwing it, and I thought it was dead, but when I picked it up it moved a little bit! I’d like to know what kind of bug it is, so I can maybe save it, and if not, maybe I’ll keep it.
Can you help me?
Signature: Ms. London

Shining Leaf Chafer:  Paracotalpa puncticollis

Shining Leaf Chafer: Paracotalpa puncticollis

Dear Mrs. London,
This gorgeous Scarab Beetle is a Shining Leaf Chafer in the subfamily Rutelinae that does not have a distinct common name, and its scientific name,
Paracotalpa puncticollis, is quite a mouthful.  It is pictured on BugGuide, but there is not much additional information.  According to the Coleopterists Bulletin:  “Paracotalpa puncticollis is usually found in pinyon-juniper areas, and appears to be associated with plats of the genus Juniperus.  Observations of adults emerging from litter at the base of juniper may indicate that larvae feed on roots of this plant.  Adults have been observed feeding on needles of juniper, and analysis of fecal material has confirmed this adult diet.”  Because of your kindness, we are tagging your submission with the Bug Humanitarian Award.

Shining Leaf Chafer

Shining Leaf Chafer


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Subject: strange beetle
Location: southeastern Idaho
March 28, 2015 8:06 pm
I keep finding these beetles in my bathroom, and I’ve never seen them before.
Signature: mrs. Payne


White Marked Spider Beetles

Dear Mrs. Payne,
These are Longhorned Borer Beetles in the family Cerambycidae, and they resemble the Ivory Marked Beetle, Eburia quadrigeminata, but they seem very small and Idaho is considerably west of their range as listed on BugGuide, so normally we would discount that as a possibility but for one bit of information posted on BugGuide.  According to BugGuide:  “Notorious for emerging from furniture after as many as 10-40 yrs.  Delayed emergence of E. quadrigeminata was discovered from a birch bookcase 40 years old (Jaques 1918).”  Larvae from this family are wood borers, often remaining in the larval stage feeding for several years.  If infested lumber is milled and turned into paneling or furniture, it is possible that the larvae might survive, and individuals in that situation may emerge many years later and they are often considerably smaller than individuals that develop in nature.  According to BugGuide:  “hosts include a wide variety of hardwoods (oak, ash, hickory, locust, chestnut, maple, elm, beech, cherry); larvae bore in heartwood.”  It is possible that you bought a piece of furniture made from one of those trees that was milled in the normal range of the Ivory Spotted Beetle, and that could explain its presence in Idaho.  That is speculation on our part and the beetles you found might actually be a local species, but at this time, we have not been able to find a likely candidate.  We will seek a second opinion on this from Eric Eaton and our readers might also be able to provide some other information.


Whitemarked Spider Beetle

Eric Eaton Responds
Way too tiny for Ivory-marked Longhorn, but I see the resemblance otherwise.
These are spider beetles, family Ptinidae.  Probably the White-marked Spider Beetle, Ptinus fur.  Here’s the Bugguide page:
I rarely see these, but they are well-known “stored product pests.”
author, Kaufman Field Guide to Insects of North America

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Subject: Star Trek brain eater
Location: Mississippi River, central Louisiana
March 28, 2015 5:14 pm
Don’t go near the water! Found this thing in the Bayou of central Louisiana at the end of March. My research has turned up some similar creepy crawlies but nothing quite the same. What is it?
Signature: Boatswain

Water Tiger and Mosquito Tumbler

Giant Water Scavenger Beetle Larva and Mosquito Tumbler

Dear Boatswain,
We absolutely love your colorful description of what we originally thought was a Water Tiger, the aquatic larva of a Predaceous Diving Beetle in the family Dytiscidae, but once we searched BugGuide and compared your individual to images of larvae of Giant Water Scavenger Beetles in the family Hydrophilidae, we determined that was the correct identification for your creature.  According to BugGuide contributor Andrew Tluczek:  “I have a masters in Entomology and have worked with aquatic insects. It is a Hydrophilidae. The mandibles have ‘teeth’ which Dytiscidae larvae do not have.”  Your individual has “teeth” on the mandibles, and other research turned up additional physical similarities.
  According to the University of Wisconsin at Milwaukee Field Station site:  “WSB [Water Scavenger Beetles] larvae are described as ‘sluggish’ and are found crawling on the pond floor or climbing on underwater vegetation. The larvae is a ‘couch-potato’ version of the sleek PDB [Predaceous Diving Beetle] larvae/ water tigers (pictured) (they sometimes share the ‘water tiger’ moniker). WSB larvae often have paired, gill-like structures protruding from the sides of their abdomens. Their feeding category is ‘engulfer-predator;’ they use their hollow jaws to suck out the juices of their prey. Their food-list includes their brethren; they love mosquito larvae but will go after mini-fish and so are an unwelcome addition to a koi pond. Larvae back their abdomen up to the water’s surface and take in air through spiracles (pores) at its tip. They spend a month underwater as larvae and about 12 days pupating in a cell in moist soil.”  That information thrilled us as we can now safely use the term Water Tiger to describe the larvae of aquatic beetles in both families.  According to Bugwood:  “Larvae, which occur in water, have an elongate body and large dark head with prominent curved jaws. Elongated spiracles through which they acquire oxygen arise from the end of the abdomen. … The immature stage is a predator, working by ambush to lie in wait, seizing and crushing prey that comes within reach. Most of their diet is made up of small insects and other aquatic invertebrates. However, their jaws are quite powerful allowing them to consume snails whole as well as catch large prey such as tadpoles and small fish.”  A Mosquito Tumbler, the pupa of a Mosquito, is visible in two of your images.  We have selected your submission as our Bug of the Month for April 2015.

Water Tiger and Mosquito Tumbler (front and center)

Water Tiger and Mosquito Tumbler (front and center)

Water Tiger

Giant Water Scavenger Beetle Larva

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Subject: help identifying beetle?
Location: Oregon
March 26, 2015 2:18 pm
Hello! While backpacking at Cottonwood Canyon State Park in N/Central Oregon (E of the Cascades) this past weekend I found this beetle. Saw at least three of them. It is a sandy/dry location, lots of sagebrush.
Perhaps in the Carabidae (ground beetle) family? The gold accents really stand out. No one seems to know what it is and Google is failing me! Hoping you can assist. Thanks!
Signature: Audrey Addison

Possibly Darkling Beetle

Dune Beetle

Dear Audrey,
We are certain that this is not a Ground Beetle, but we are not certain of its exact identity.  We believe it is most likely a Darkling Beetle in the family Tenebrionidae or a Leaf Beetle in the family Chrysomelidae, but alas, we are in a rush this morning and we don’t have time to research its exact identity.  We are posting your image and perhaps one of our readers will write in with an identity.  If not, we will continue the research tomorrow.

Eric Eaton confirms Darkling Beetle
Hi, Daniel:
It is a darkling beetle called a “dune beetle,” in the genus Coelus.  Never saw one of these when I lived out there.  Neat find!

Thanks Eric,
We are linking to the BugGuide page on the genus.  Checking out the comments, we do believe it appears more like a member of the genus
Eusattus, and in our opinion, based on images posted to BugGuide, it looks closest to Eusattus muricatus, a species with a much greater range than other members of the genus.

Eric Eaton responds
Well, shoot, I don’t know.  I never saw Eusattus out there, either, though in Arizona and here in Colorado, Eusattus is most definitely most abundant in the *fall*, not the spring.

Awesome!! I struggled trying to find any information on this beetle! Thank you for your help!!

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