Currently viewing the tag: "Invasive Exotics"
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Subject: Black & Yellow 2 inch Bug
Location: Concord CA
April 20, 2014 9:19 pm
Should I be concerned about this bug? Or is it just a beetle? It is about two inches long with four inch antennae. The head is black. The body is mostly yellow from the head to the black band before getting to the yellow butt area. There are two symmetrically located black dots in the yellow area of its back. The legs and antennae appear to be brown.
I found this bug on an exterior garage wall under a light on Sunday, April 20, 2014. We live in Concord, CA, about 35 miles east of San Francisco. It is starting to stay warm throughout the day (average of 70′s to 80′s). The weather is cool at night with dew in the morning, and dry/not humid during the day.
The closest I could come to identifying it is calling an “Instable Longhorn beetle Judolia spp Family Cerambycidae” from the website address below:

http://share2.esd105.org/rsandelin/Fieldguide/Animalpages/Insects/Beetles.htm

The attached photo was taken with my iPhone and emailed to me as “Actual” size.
I’m not sure what to make of it. Any information you can provide will be greatly appreciated.
Thank you,
Raymond Winters
Signature: Ray W. of Concord CA

Eucalyptus Longhorn

Eucalyptus Longhorn

Dear Ray,
While you have misidentified this Longhorn Borer Beetle, you did get the family correct.  This is actually a Eucalyptus Longhorned Borer and it is an invasive species in Southern California, but luckily, its host tree is also an introduced genus, the Eucalyptus trees, which are ubiquitous in Southern California.  More information on Eucalyptus Longhorned Borers can be found on the UC Davis Statewide Integrated Pest Management Program website.

What's That Bug? does not endorse extermination

Subject: Raining shrimp?
Location: Fairhope, AL
April 19, 2014 4:19 pm
I emptied the water out of a large bowl I had left outside the other day, but since it rained again yesterday I went to empty it again today and found about ten of these baby shrimp in the bowl. I live about 5 miles from Mobile Bay, but I still thought that was kind of weird… then I found your page and concluded they might be lawn shrimp. The antennae fell off before I took the picture.
Signature: Ray

Lawn Shrimp

Lawn Shrimp

Hi Ray,
You are correct that this is a terrestrial amphipod known as a Lawn Shrimp.  They are also known as House Hoppers because they sometimes enter homes in large numbers after a rain.  Lawn Shrimp are native to Australia, but they have been introduced to North America, and most of our reports come from California.  We have also gotten reports from Florida, but we believe your account from Alabama is a first for us.  Lawn Shrimp can proliferate in great numbers in gardens, but they are generally not noticed until it rains and they enter homes where they quickly die.

What's That Bug? does not endorse extermination

Subject: Unidentified Bug
Location: Saigon, Vietnam
April 15, 2014 4:14 am
Can you identify this flying insect and where they are likely to have originated?
These were found in slatted crates in a shipping container from SE Europe. There were about 10 of these about 25mm long. Some were still alive and there was evidence of wood dust alongside.
April 2014.
Signature: K. Ginty

Wood Wasp

Wood Wasp

Dear K. Ginty,
This is a Giant Wood Wasp, and it resembles
Uroceros gigas, a species found in Europe.  Based on your observations, and the known habits of this species, it is highly likely that the individuals you found were imported with the crate and that they were most likely living as larvae in the wood when the crates were assembled.  There are, however, several subspecies found in Asia.  According to the Pest Reports EXPOR Database:  “Three subspecies of Urocerus gigas are found in Asia. U. g. gigas occurs in Russian Siberia and Kamchatka. U. g. orientalis occurs in China, Japan, Korea and Asian Russia (Far East, Kamchatka and Sakalin) and U. g. tibetanus is known only from Tibet (China).”  Despite there presence in Asia, it is our strong opinion that the specimens you found were imported.

Good evening Daniel,
Thank you for the quick response on this – mightily impressed.
I will tell my colleagues in Vietnam.
These scared them somewhat to say the least.
Thank you once again.
Regards
Kevin

You are most welcome Kevin.  Also, though it looks quite formidable, that ovipositor is harmless and to the best of our knowledge, the Giant Wood Wasp cannot sting.

What's That Bug? does not endorse extermination

Subject: Not a clue!
Location: Derbyshire, England
April 4, 2014 11:06 am
Hi,
Please could you help me identify this creature? I’ve been scrolling through photos for hours and had no luck. I’m afraid I’m completely ignorant with insects so I can’t even narrow my search.
I’ve found two of these in a Derbyshire bedroom at separate times over the last couple of weeks. I never seen them before, or anything similar, so I would like to know what they are if we’re sharing space.
I’m afraid I haven’t observed any useful behaviours, I just have this photo.
Thankyou for any help.
Signature: Rose

Longhorned Borer Beetle

Longhorned Borer Beetle is Placosternus species

Hi Rose,
This is a Longhorned Borer Beetle in the family Cerambycidae, but we have not had any luck identifying the species.  It is not listed on Mark Telfer’s Longhorn Beetles page, nor on Eakring Birds.  Did you get any new furniture in the room where you have found the beetles?  We don’t want to be alarmist, but it is possible they emerged from the wood used in a new piece of furniture.  We will continue trying to identify the species.

Hi,
There is a wooden bowl my brother bought back from Belize. Looking at it I can see three holes, two have dust around them and one looks like there is something still in it.
As it’s likely these beetles are foreign to my ecosystem, is there some precaution I should take?
Thank you so much for your speedy reply!
Rose.

Hi again Daniel,
I’ve just been in touch with my brother and he says it is a rosewood bowl bought in Placencia Belize that we think it has come from. Hope that can help with the identification?
Thanks again for all your help.
Rose

Hi Rose,
We believe you probably found the source of the introduction of these Longhorned Borers with the discovery of the wooden bowl and its holes.  Many invasive species have been introduced in this manner to various parts of the world, however, we don’t think you need to fear that this tropical species will survive in your much colder English climate.  We will see if we can find a match among species from Belize, though nearby Costa Rica shares many of the same species and there is more comprehensive data on Costa Rican species on the internet because of the ecotourism.

Additional Information and Identification courtesy of Karl
Hi Daniel and Rose:
It looks like a species of Placosternus (Cerambycidae: Cerambycinae: Clytini) which includes the familiar Mesquite Borer (P. difficilis) that occurs as far north as the southern USA , and south to Honduras. There are four species of Placosternus altogether, all of which can be found in Belize, look very similar and include neotropical rosewoods as larval host plants. The adult coloration suggests that they may be wasp mimics. The commonly used rosewood species in Belize is the Honduras Rosewood (Dalbergia stevensoni). FYI, this species has long been a staple in the Belizian artisanal tourist industry (full disclosure – we also bought a few beautiful rosewood bowls in Belize a few years ago), but unfortunately, a massive increase in the harvest in recent years to feed Asian demand has caused concern and the Belizian government has recently implemented a ban on the harvest and export of rosewood. I am not sure if this includes the small-scale production and sale of carved products for the tourist trade. If so, this would be a serious and unfortunate hit on an important village-based income source. Regards. Karl

Thanks for doing this research Karl.  We did notice the resemblance to the Mesquite Borer when we wrote the original identification, and we tried searching its tribe in England to see if there were any relatives.

Hi Karl and Daniel,
Thank you very much for solving the mystery! Thanks for all your time and effort.
Kindest regards,
Rose

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Subject: White bugs on heavenly bamboo
Location: Sacramento
March 25, 2014 12:14 pm
These creatures are all over my heavenly bamboo, particularly on the top third of the branches. They hang out on the underside–they appear to be hanging on by legs and a mouth, but my mom thinks they are a chrysalis. The front of them is a brown or maybe an orange/black. We picked a few off thinking they were a pest before thinking maybe they’re good bugs–what are they? It’s an unseasonably warm/dry spring in Sacramento, CA.
Signature: Danielle

Cottony Cushion Scale

Cottony Cushion Scale

Dear Danielle,
You have an infestation of Cottony Cushion Scale, a pest species from Australia that has become established in North America where it is a significant crop pest.  According to BugGuide:  “The white fluted part of the insect is an egg sac that can contain up to 1000 eggs. The insect is hermaphroditic, producing sperm that can fertilize its own ova, but in an alternate reproductive strategy it can also make winged males that can fertilize the female part of other individuals.
When it first appeared in the w. US it was a major pest of Citrus crops. In CA, around 1889, it was an early success story for biological control by beneficial ladybird beetles (Rodolia cardinalis). (Full story) The control was so successful that in 1893 a Florida nurseryman asked for some of the beneficials to be sent to FL, to test as a control for other scale insects. The scale was included in the shipment as food for the beetles, and thus accidentally introduced to FL citrus.

Cottony Cushion Scale

Cottony Cushion Scale

Thank you so much! 1000 eggs! Really? Eeek–I’m not a “bug man”–my skin is crawling. I appreciate the info.

What's That Bug? does not endorse extermination

Subject: Strange looking dead bug!
Location: Ireland
March 15, 2014 10:56 am
Hi there found this weird bug dead on sofa..there were 2 of them!  Founding n Ireland! Is this some sort of carpet beetle perhaps?
Signature: Ali

Lawn Shrimp

Lawn Shrimp

Hi Ali,
This looks like a terrestrial Amphipod,
Arcitalitrus sylvaticus, commonly called a Lawn Shrimp or House Hopper.  These Australian natives have become established in southern California as well as several other parts of the world.  According to BugGuide, their range is:  “Southeastern Australia (New South Wales and Victoria), as well as nearby areas of the Pacific, but introduced into New Zealand, the British Isles, Florida and California.”  They are known to enter homes when their garden habitat is flooded due to rains.

What's That Bug? does not endorse extermination