Currently viewing the tag: "Invasive Exotics"
What's That Bug? does not endorse extermination

Subject: Request for insect identification & control instructions
Location: Alberton, Johannesburg, South Africa
February 9, 2017 7:09 am
Good afternoon Bugman,
We have a very big problem with the insects in the below photos, and the problems keeps escalating very quickly. It is a very big concern, as they are busy taking over our whole yard and they leave their sticky residue on everything.
Can you please have a look at the photos and see if you know what this is, and if possible give me some instructions on how we can get rid of them?
The start out like the larvae on the left of the photo , and then become beetles like the one on the right of the photo.
In the bottom photo you can see a whole lot of them together in their various stages of development.
Signature: Filna Heymans

Multicolored Asian Lady Beetle Larva and Pupa

Dear Filna,
It is quite interesting to us that you are concerned about the larvae and pupae of these Lady Beetles, but you have not mentioned the winged adults.  We strongly suspect that these are the early stages of the invasive Multicolored Asian Lady Beetles,
Harmonia axyridis, but we had to verify their occurrence in South Africa on iSpot where we discovered the most awesome Clime Lab logo posted by who is “studying the thermal biology of the alien ladybird Harmonia axyridis (harlequin ladybird, multi-coloured Asian lady beetle) in South Africa and their observations will be useful for determining microclimates.”  The Multicolored Asian Lady Beetle is a threat to native Lady Beetle species in North America because the invasive species is so prolific, and it will prey on native species.  They get quite numerous and they frequently cause homemakers to fret when they enter homes to hibernate in great numbers as the weather begins to cool  Though we recognize the threat they make to native species, alas, What’s That Bug? does not provide extermination advice.  

Multicolored Asian Lady Beetle Larvae and Pupae

What's That Bug? does not endorse extermination

Subject: Lady bug invasion?
Location: East Texas woods
January 31, 2017 10:30 am
For a couple of months we have been assaulted by literally MILLIONS of little beetles that resemble lady bugs. They are literally everywhere…outside and inside! These come in a range of colors from deep red through mustard yellow. Some have black spots, some don’t. We live in the Piney Woods of East Texas. Any thoughts? Thank you!!! (Sorry the photo is a bit blurred.)
Signature: Overwhelmed

Multicolored Asian Lady Beetles

Dear Overwhelmed,
Though your image is quite blurry, we suspect you have encountered the introduced Multicolored Asian Lady Beetles that are known to hibernate indoors in great numbers.  See BugGuide for examples of the color and pattern diversity exhibited by the Multicolored Asian Lady Beetles,
Harmonia axyridis.  Our Better Nature has an interesting article on invasions of Multicolored Asian Lady Beetles.

Dear Daniel — Bull’s Eye!!!  That’s definitely what we’re dealing with!  I so appreciate your help. I’m engaging in the process of searching out and caulking every miniscule seam, crack or nail hole in my siding, though I expect it will not fully resolve this issue. I share the concern expressed in response to another inquiry re: the attack on our native lady beetles and the resultant decrease in genetic diversity. Let’s hear it for introduced species!  (A bit of sarcasm there). At any rate, thanks so much for your response!

What's That Bug? does not endorse extermination

Subject: A house nuisance
Location: Chicago, IL
January 29, 2017 9:53 am
This bug has appeared regularly over the past six months in our house
Signature: Buggy

Brown Marmorated Stink Bug

Dear Buggy,
The Brown Marmorated Stink Bug was accidentally introduced into North America from China in the late 20th Century.  Since it has no natural enemies, it quickly spread from Pennsylvania across the continent.  They are most commonly noticed when they enter homes as the weather cools so they can hibernate until spring warmth.

What's That Bug? does not endorse extermination

Subject: Bug
Location: Northeastern United States (Pennsylvania)
January 27, 2017 4:39 pm
I took this picture on my way to an appointment. I have looked through numerous books and haven’t been able to find out what it is.
Signature: -Future Scientist

Spotted Lanternfly

Dear Future Scientist,
If you were searching guidebooks of native species, you would not find this Spotted Lanternfly,
Lycorma delicatula, a species native to China.  Though we immediately recognized it, the reason is that we have received submissions for years from Korea where it has been introduced and where it is sometimes called a White Cicada.  We were not aware it had been found in North America, and according to BugGuide:  “Confirmed in Berks County, PA, in Sept. 2014.”  BugGuide also recommends:  “SIGHTING REPORTS WANTED: Entomologists are working to delimit the current population and discover any new infestations of this potentially destructive species. If you have seen this insect, please report your sighting using one of the methods provided on the Pennsylvania Department of Agriculture website.”  Since it is the middle of winter, we suspect this is not a recent sighting for you.

What's That Bug? does not endorse extermination

Subject: What is this
Location: Darien Illinois suburb of Chicago
January 22, 2017 7:27 am
Found on second floor of 2 story home
Signature: Tim Vavra

Brown Marmorated Stink Bug

Dear Tim,
The invasive, introduced Brown Marmorated Stink Bug frequently enters homes to hibernate when the weather cools.

What's That Bug? does not endorse extermination

Subject: Pennsylvania bug
Location: Northeastern Pennsylvania
January 15, 2017 9:33 pm
Washing dishes in my kitchen when this bug buzzed loudly across the room and dive bombed into the water. Water was hot so he didn’t make it. Never saw one before, abdomen has an odd concave shape. Black (or dark brown?) with yellow markings. What is this bug?
Signature: Debbie

Western Conifer Seed Bug

Dear Debbie,
The Western Conifer Seed Bug is a species native to the Pacific Northwest that greatly expanded its range across North America beginning in the 1960s.  Western Conifer Seed Bugs often seek shelter indoors to hibernate when the weather cools, which is probably why you found it in your kitchen.

Thank you so much for your help!  I have been bombarded with “stink bugs” this year more than ever!!!  Asian lady bugs are everywhere as well. They are driving me crazy!!!!  So when this new looking bug landed in my sink, I thought, “Here we go again!”  Thank you for identifying it for me. I refer to your site often!  It’s a fantastic reference!!!
Btw….is there any kind of deterrent for any of the above mentioned bugs?  I do not want to spray to kill, I just wish I could discourage them out of our living space better. Our home is an 1815 farmhouse and we are trying to seal up as much as we can. Any advice would be helpful.
Again, thank you for the ID on the bug. I will continue to reference your very informative site!  Have a great day!

Hi again Debbie,
Brown Marmorated Stink Bugs, Multi-Colored Asian Lady Beetles and Western Conifer Seed Bugs are all introduced species in your area, and they probably have no natural enemies, hence their ability to proliferate, and they are most likely here to stay.  Short of sealing your house better, we cannot provide any additional deterrents. 

Thanks very much!  Then we will continue to do that!!  Again, j appreciate your help and will continue to enjoy your site!!!

What's That Bug? does not endorse extermination
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