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What's That Bug? does not endorse extermination

Western Conifer Seed Bug: and What’s That Bug? book preview. Follow up Masked Hunter

Assassin bug
November 13, 2009
I was going to send you a burying beetle, but then this one popped up unexpectedly so here he is. I’ll save the burying beetle for another night.
The cat loves/hates them. Loves to stalk, hates being spit on.
Oroboros
Denver, CO

Western Conifer Seed Bug

Western Conifer Seed Bug

Dear Oroboros, you snake,
This is not an Assassin Bug.  It is a Western Conifer Seed Bug, one of the Leaf Footed Bugs in the family Coreidae.  Just this morning we wrote about the Western Conifer Seed Bug for the Household Intruders chapter of our book, so we are just going to post that section as part of your reply.  We hope our readership enjoys this short preview.

Western Conifer Seed Bug

Had it remained confined to its native Pacific Northwest range, the Western Conifer Seed Bug, Leptoglossus occidentalis, would never have made our Rogue’s List of household intruders, but during the 1970s, individuals were noticed in the eastern portions of North America, thousands of miles from their home territory.  These introductions were probably due to human assistance, though the exact source of the accidental establishment cannot be ascertained.  The Western Conifer Seed Bug found the climate in the eastern part of the continent to its liking, and there was a readily available food source, and the species multiplied.  Both adult and immature Western Conifer Seed Bugs feed on the sap of the resin rich green pine cones, and occasionally the twigs and needles of many species of conifers, so they do little damage to the trees themselves, though they do have a negative effect on the developing cones which wither and fall off the tree.  The Western Conifer Seed Bug is now very well established across North America, everywhere but the southern and gulf states.  In the very late twentieth century and into the early twenty first century, reports of sightings in many European countries were confirmed, doubtless due to the importation of stacks of lumber that may have contained hibernating adults.

The Western Conifer Seed Bug can be recognized both by its dull orange and brown coloration and its long antennae.  Its most distinguishing feature though is the widening on the hind leg that gives the family members a shared common name of Leaf Footed Bug or Big Legged Bug.  Since homemakers are often prone to swatting this relatively large intruder should it be encountered inside, this action releases what some to find to be an offensive odor, and what others have described as the scent of apples, the smell of grass, or the odor of pine.  Because of the scent, the Western Conifer Seed Bug is sometimes mistaken for a Stink Bug, though the odor released by a Stink Bug is rarely described as pleasant.

Because of their habit of entering homes to seek shelter from the winter cold, Western Conifer Seed Bugs gain attention in the autumn along with some true Stink Bugs like the Brown Marmorated Stink Bug.  None of these species pose any threat to humans, pets or to the home.  They will not breed indoors and they will not bite.  Since they are just seeking shelter from the elements, if they escape notice upon entering, they will find a secluded place and rest until the warm sunny days of spring arrive.  At that time, they again attract attention as they seek egress at the bright windows.

Update with new photo
How fascinating! I was quite sure of the general identity before I sent that, so I am really glad now for the serendipity that caused me to choose it and learn something new.
I do tend to find them closest to the window that is right next to a pine tree which now makes a lot of sense.
So here’s a followup then. I found this guy in my bathtub, and suspect that they are the same species but perhaps this is a juvenile?
I named the photo replicator because something about it reminded me of the replicators from the Stargate series.

Masked Hunter

Masked Hunter

Your replicator is an Assassin Bug, an immature Masked Hunter.  It may bite, but does not spread Chagas.  Thanks to clickbeetle for pointing out there was a link with a new image.

Wheel Bug

Whats this strange bug
November 12, 2009
its chilly right now in IL and 3 others near me have found these bugs so i am curious what they are
doesnt matter
Central Illinois US

Wheel Bug

Wheel Bug

Dear doesnt matter,
This beauty is North America’s largest predatory Assassin Bug, the Wheel Bug.

Red Spot Assassin Bug from Botswana

Beetle
November 8, 2009
In the Okavango Delta in Botswana we encountered this beetle in a lodge. Unable to identify – can you help?
LosYaxons
Xaranna, Okavango Delta, Botswana, Africa

Red Spot Assassin Bug

Red Spot Assassin Bug

Dear LosYaxons,
At least twice in the past, we have identified similar looking Assassin Bugs in the genus Platymeris.  This one appears to be the Red Spot Assassin Bug, Platymeris rhadamanthus, based on online images and descriptions.  Angelfire.com indicates:  “Platymeris rhadamanthus (Red Spot Assassin Bug) is the least aggressive and smallest of the three pet species. It is still a very large African species capable of taking down huge arthropod prey many times its mass. The Red Spot Assassin has been kept for almost a decade but still can be hard to find. Defensive reactions result only from physical attack. If grabbed (immobilized) in such a way that the rostrum can contact skin it will give a bite worse than a bee sting, insignificant but very uncomfortable. These are normally kept in colonies with dozens of individuals at varying ages. This species is less prone to cannibalism than the other two. Egg to adult takes six to nine months and adults continue to live another two years. Eggs are dropped in the dirt.
A close relative is known as the Mombo or Orange Spotted Assassin Bug, an even larger species.  The American Tarantula Society Discussion Board has some gorgeous images of the Mombo.

What's That Bug? does not endorse extermination

Wheel Bug

long-legged bug with shield-like armor on its back
November 6, 2009
I saw this bug in November of 2009. It was on my front porch. The closest description I can give is that it looked like a grasshopper only with flat wings instead of vertical wings. The shield-like “armor” on its back raised up about 1/4 inch from the body and appeared to have “fake” eyes on the lower front. Its head extended forward in an elongated fashion from the main body with long antennae. Pictures are included from the top, bottom and side.
R Morana
Northwest TN. near Kentucky Lake

Wheel Bug

Wheel Bug

Dear R,
This is North America’s largest predatory Assassin Bug, the Wheel Bug.

Milkweed Assassin Bug: Adult and Nymph

Predatory Orange Bug
November 1, 2009
These bugs are everywhere in my butterfly garden! They rapidly consume the caterpillars, and the favorite food seems to be the Cloudless Sulphur cats. Getting these photos was difficult as they kept flying away, but I finally got a few….
Any ideas on what these might be?
Thanks so much!
Houston, TX

Milkweed Assassin Bug

Milkweed Assassin Bug

Because of its resemblance to the Milkweed Bug, your insect, Zelus longipes, is known as a Milkweed Assassin Bug, though it is not typically associated with Milkweed.  Both wingless nymphs and winged adults feed on soft bodied insects like caterpillars, and they are generally thought of as beneficial in the garden where they feed on armyworms and cucumber beetle larvae.  If carelessly handled, Milkweed Assassin Bugs might bite and the bite is reported to be painful.

Milkweed Assassin Bug Nymph

Milkweed Assassin Bug Nymph

Thanks so much! I really appreciate yall’s site. The Unnecessary
Carnage page was definitely my favorite – please ignore the Nasty
Readers :)

Wheel Bug

“Wheelbarrow Bug”
November 2, 2009
This is a bug I see about once a year, although it’s probably common. My parents’ generation calls it a “wheelbarrow” bug because of the wheel-like appendage on it’s back. But, I’d like to know what it’s real name is. My aunt said it was odd to see one this late in the year, but we haven’t had a freeze yet. This bug was crawling on the swing, and it would watch me as I tried to get in close to photograph it, and turn to face me. It was not a fast-moving creature (as bugs go). It’s most unusual feature is the thin gear- or wheel-like appendage on the creature’s back that is visible when viewed from the side. It is grey and black in color, and about 3.5 cm in length.
Michael Wilson
Carter County, Oklahoma, USA

Wheel Bug

Wheel Bug

Hi Michael,
Though we have not heard the common name Wheelbarrow Bug, we like it.  The common name for this large Assassin Bug, Arulus cristatus, is Wheel Bug.  Since it only has one “wheel” like a wheelbarrow, we find your name to be most appropriate.
Like other Assassin Bugs, Wheel Bugs might bite if carelessly handled.

Thread Legged Bug

Mini Praying Mantis
October 30, 2009
Hi,
My cat first found one of these interesting creatures inside our house (7/6/09), and I made a short video of it before letting it go: http://www.youtube.com/watch?v=xoISwh7K8BE
Last night (10/29/09), in my cat’s water dish, I rescued another one (or the same one) from the water. It seems similar to the grass mantis (four spider-like legs), but both the head and body shape are clearly different. What do you think?
Best wishes,
Rich
Rich Smith / RichSmith.com / Los Angeles
West Los Angeles 90066

Thread Legged Bug

Thread Legged Bug

Hi Rich,
This is an Assassin Bug in the subfamily Emesinae, known as the Thread Legged Bugs.  Our best guess is that it is in the genus Empicoris, characterized by “femora, tibiae, and antennae banded black and white; forefemora thickened, elongate; wings slender, extending slightly beyond tip of abdomen
” according to BugGuide.  The front legs that are modified for grasping insects do resemble the front legs of mantids.

Wheel Bug

six leg, flying, single fang insect
October 21, 2009
Hi guys, This insect has been hanging around my house for a few days now 10/21/2009. I live in a suburb of Pittsburgh PA. Current temp is 60 ish. The insect was found clinging to a window screen, it also like painted block walls. The body from tail to the tip of the head is 1.5″ long. It seems to have a single “fang” and it does fly (not very gracefully). Can you tell me what it is?
Jim Holman
Munhall PA

Wheel Bug

Wheel Bug

Nevermind
Jim Holman to bugman
October 21, 2009
Sorry I was so quick on the trigger. I just submitted a request to id an insect or BUG in this case. I did find the insect on your site. I wasn’t sure how to search for it but using the word armored did the trick. I’m refering to the wheel bug. You may keep/use the images I sent if you like them.
Jim Holman
Pittsburgh PA

Wheel Bug

Wheel Bug

Hi Jim,
We are happy to see that you identified your Wheel Bug and sent us a cancellation of the identification request within eleven minutes.  We are posting your letter for two reasons.  First it demonstrates the efficiency of our search engine even without having any knowledge of insects, and we hope our readership makes use of it.  Secondly, your photos are quite good and very illustrative of this large species of Assassin Bug.  This is the only image we have ever received of a Wheel Bug with its wings expanded for flight.  Though Wheel Bugs are not prone to biting humans, they can produce a painful bite with that piercing mouth.

Immature Corsair Bug from Oklahoma

Orange-red bug with odd ridged tail
October 10, 2009
Dear Bugman,
I’m trying to help my son with a Science project, but can’t figure out what this bug is! We found this little critter scampering across the kitchen floor in our typical suburban neighborhood, Can you help?
Bug-ignorant Dad
Norman, Oklahoma, USA

Unknown Assassin Bug

Corsair Bug Nymph

Dear Bug-ignorant Dad,
This is some species of Assassin Bug, and it appears to be an immature specimen since the wings are not fully developed.  We matched it to an unidentified Corsair Bug nymph posted to BugGuide, also from Oklahoma.  The person who posted those images states:  “Found under a rock.  Hopefully these shots are better and maybe the ID can be gotten further.  I know from past encounters with these that they are fairly quick and agile. So, when I turned the rock over it started making it’s escape. I didn’t have a container so I caught it in my hand and carried back to the house (a little over a quarter mile). I’m glad it didn’t decide to stab me with that proboscis!
Members of this genus are reported to have a very painful bite.

Daniel,
Thanks so much for your help.  It’s great to see that people with expertise in this field are willing to help those of use who are basically know – nothings.
Have a great day,
Kent

Oleander Caterpillar and Milkweed Assassin Bug

What type if catepillars
October 5, 2009
Found eating Oleander near Hilton Head South Carolina
Walt Jankowski
Hilton Head SC

Oleander Caterpillar and Milkweed Assassin Bug

Oleander Caterpillar and Milkweed Assassin Bug

Hi Walt,
The caterpillar in your photo is known as the Oleander Caterpillar, and it is the larva of the Polka Dot Wasp Moth, Syntomeida epilais.  Below the caterpillar is an immature Milkweed Assassin Bug, a predator that often feeds on caterpillars.  We  are uncertain if it will prey upon the Oleander Caterpillar.  The caterpillar stores toxins from the oleander in its body which renders it unpalatable to many predators.

Wheel Bug

Insect With Gold Wing Tips
October 4, 2009
I was hiking around Sugarloaf Mountain with some friends when we spotted this odd insect. I looked around trying to identify it, but couldn’t find anything so I thought I’d ask.
Brian B
Sugarloaf Mountain, MD

Wheel Bug

Wheel Bug

Hi Brian,
This is a Wheel Bug.  Not all Wheel Bugs exhibit this coloration, and it may just be the way the light is reflecting on the wing membranes.

Wheel Bug eats Japanese Beetle

Assassin bug dining on Japanese beetle
September 20, 2009
While out scouting for butterflies, I came upon this slightly grizzly scene of a wonderful assassin bug dining on a Japanese beetle. Glad it wasn’t me!
This was taken on June 30, 2009 in Orange County, VIRGINIA — the original OC :-)
Lynne from Virginia
Orange County, Virginia

Wheel Bug eats Japanese Beetle

Wheel Bug eats Japanese Beetle

Hi Lynne,
Thanks for sending your wonderful Food Chain documentation.  More specifically, the Assassin Bug is a Wheel Bug.  We are sure your photo will bring great joy to many gardeners who are plagued each year by the appearance of the scourge, the Japanese Beetle.  The invasive exotic Japanese Beetle appears in great numbers each year and feeds on many ornamental and food plants, including roses.  We have heard that this year in Ohio, the Japanese Beetles can still be found despite the late date.


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