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

Subject: what’s that bug?
Location: Northern IL
February 2, 2016 3:53 pm
This is from Northern IL and usually appears in the Winter indoors
Signature: Thanks, Ted

Brown Marmorated Stink Bug

Brown Marmorated Stink Bug

Dear Ted,
The Brown Marmorated Stink Bug is non-native species introduced from Asia that has spread across North America in a very short time.  They seek shelter indoors when the weather cools.  According to the USDA site, the Brown Marmorated Stink Bug:  “Feeds on a variety of plants, including fruit trees, ornamentals, and some crops.”

What's That Bug? does not endorse extermination

Subject: Wasps or Hornets in winter
Location: Connecticut
January 28, 2016 7:58 am
A couple days ago, I was walking in my front yard and I saw a wasp/hornet/yellow jacket walking on top of the snow…
I live in central Connecticut, so it seemed a bit odd because I’ve never seen that before in my 44 years here.
Is this normal?
Thanks,
Signature: Michael

Paper Wasp in the Snow

European Paper Wasp in the Snow

Dear Michael,
We suspect this unusual sighting of a Paper Wasp in the genus
Polistes in the snow is related to the unseasonably warm weather experienced by much of the eastern U.S. through the end of 2015.  We are relatively certain this is an introduced European Paper Wasp, Polistes dominula, which is described on BugGuide as:  “No other species of Vespidae has mostly orange antennae.”  Because of the snow, your images were underexposed, but if the images are lightened, the antennae do appear to be orange.  BugGuide also notes:  “Only females are able to overwinter. Some ‘workers’ of previous season are able to survive and act as auxiliary females for the foundresses, provided the quiescent phase has been short enough. ”  You did not indicate what the temperatures were like on the day you took the images, but we are suspecting it was a warmer day, with temperatures above freezing, despite snow still being on the ground.  If the late start to winter allowed the nest to remain active considerably later in the season, and this individual survived a short “quiescent phase”, then it is possible she set out from the nest on a warm winter day.  BugGuide also notes:  “An introduced species from Eurasia, often mistaken for a yellow jacket. First reported in North America by G.C. Eickwort in 1978 near Boston, Massachusetts.  There are reports of it replacing native species of wasps in some areas,” which is prompting us to tag this as an Invasive Exotic, especially since the BugGuide range in quite extensive in North America considering the species has been reported here for less than 40 years.

Paper Wasp in the Snow

European Paper Wasp in the Snow

What's That Bug? does not endorse extermination

Subject: Snail
Location: REGUA (Reserva Ecológica de Guapiaçu) Atlantic Rainforest Rio De Janeiro, Brazil
January 17, 2016 8:36 am
During my stay as a volonteer in REGUA (Reserva Ecológica de Guapiaçu) Atlantic Rainforest Rio De Janeiro, Brazil Nov 12 – Dec 7 2011 I photographed this magnificent snal. I believe people who are fascinated of these kind of animals recognize it easily.
Signature: slit

Giant African Snail Invades Brazil

Giant African Snail Invades Brazil

OK Slit,
You threw us on this one.  No continent in the subject line and considering your previous six submissions, we automatically assumed you would be inquiring about a Tanzanian Snail, and we located the Giant African Land Snail on A-Z Animals where we learned:  “The giant African land snail, is the largest species of snail found on land and generally grow to around 20 cm in length. The giant African land snail is native to the forest areas of East Africa but has been introduced into Asia, the Caribbean and a number of islands in both the Pacific and the Indian oceans.”  Once we realized you encountered this Snail in Brazil, we verified the original identification on Latin American Science where the headline is:  “Giant African land snails are invading Latin America.”  On National Geographic the headline reads:  “Giant Snails, Once a Delicacy, Overrun Brazil.”  We consider this to be an Invasive Exotic species and we encourage Brazilians to eat them since National Geographic states:  “The giant African snail, originally brought to Brazil as a delicacy for gourmet restaurants, has instead become a major nuisance in the country.”

Giant African Snail Invades Brazil

Giant African Snail Invades Brazil

Cesar Crash provides a critical warning.
Sorry, I cannot comment again.
African snail is being considered vector of meningitis, it is believed that it is dangerous even to eat leaves where it crawled and it is recomended to use a plastic bag on hand to catch it.
http://portal.fiocruz.br/pt-br/content/meningite-transmitida-por-caramujos-com-avanco-de-casos-cientistas-alertam-para-prevencao
http://laboratoriocremasco.com.br/caramujo-africano-saiba-como-evitar-a-doenca-transmitida-pelo-molusco/
But, I don’t know, this one has a light shell, I think it may be a Megalobulimus.
I Hope it helps,
Cesar.

Thanks Cesar.  We will research Megalobulimus later.

 

What's That Bug? does not endorse extermination

Subject: Swarming on beach morning glory
Location: Wellington, Florida
December 24, 2015 2:50 pm
Dear Bugman,
There is a crowd of these bugs swarming on our only beach morning glory plant (Ipomoea imperati) here in western Palm Beach County, Florida. The plant looks peaked and is starting to turn yellow. What are these bugs, and are the bugs to blame? Will they move on to other plants after they are done with the morning glory?
Thank you!
Signature: Helen

Giant Sweet Potato Bug Nymphs

Giant Sweet Potato Bug Nymphs

Dear Helen,
We are sorry about the delay, but you wrote during the time we were out of the office for two weeks and we are still catching up on old mail.  These appear to be Giant Sweet Potato Bug nymphs,
Spartocera batatas, based on this BugGuide image.  The individual in that image were also on morning glory in Florida.  Though BugGuide notes:  “native to the Neotropics (West Indies to so. Brazil), adventive in our area (FL)” and “first reported in the continental US: FL 1995,” there is no mention of food plants, so we cannot say if they will move to other plants.  Featured Creatures has much more information including:  “A large colony of Spartocera batatas (Fabricius) was found in late June 1995 on an Asian cultivar of sweet potatoes (Ipomoea batatas) in Homestead, Florida, by Lynn D. Howerton, environmental specialist, Division of Plant Industry (DPI). The plants were badly damaged by the insects. That collection represented the first report of S. batatas in the continental U.S. Subsequent surveys of commercial fields of sweet potatoes in the area failed to turn up any more S. batatas. However, an additional single specimen was found in Miami in early October 1995 by DPI Inspector Ramon A. Dones. Many bugs were found in suburban Miami by Julieta Brambila (University of Florida, Institute of Food and Agricultural Sciences) in late September 1996.”  The following food plants are also mentioned:  “The most important host of S. batatas appears to be sweet potato, after which it was named. Other hosts listed in the literature include Solanaceae [tomato (Lycopersicon esculentum), eggplant (Solanum melongena var. esculentum), potato (Solanum tuberosum), and Solanum nigrum], Lauraceae [avocado (Persea americana)] and Rutaceae (Citrus spp.) (Ravelo 1988, Martorell 1976, Alayo 1967, Barber 1939, Wolcott 1923). Observations in Florida indicate that S. batatas adults sometimes disperse in high numbers. Thus, transient adults could be collected on a wide variety of plants. It is not known which of the above host records represent breeding populations.”

Dear Daniel,
Thank you – this information is very helpful. I have been picking them off because the morning glory is at the edge of our vegetable garden and we found more of the nymphs on the other side of the garden. We also have an avocado tree nearby so we don’t want to take any chances that they might spread further.
I appreciate your response.
Helen

What's That Bug? does not endorse extermination

Subject: Help: flying insect in home
Location: Michigan
January 3, 2016 6:07 pm
Hi bugman,
It is now winter in Michigan and I have killed at least 4 of these flying insects in my home. I live in the suburbs and my family and I cannot fathom what this bug is. We are thinking it is some kind of beetle. Can you help us here?
Signature: Worried homeowner

Brown Marmorated Stink Bug killed after entering home.

Brown Marmorated Stink Bug killed after entering home.

The invasive, exotic Brown Marmorated Stink Bug is increasing in numbers and spreading across North America since being discovered in Pennsylvania in the late 1990s.  It enters homes when weather cools so that it can hibernate.  This is a serious threat to many commercial crops as well as plants grown in home gardens.

What's That Bug? does not endorse extermination

Subject: What kind of bug is this?
Location: Northern Illinois
December 30, 2015 11:00 pm
I have been seeing these bugs in my house for about the past month. It is December and I live in the northern part of Illinois. I want to identify the bug before I contact my landlord so any help you can give me would be appreciated.
Signature: Kimberly

Brown Marmorated Stink Bug

Brown Marmorated Stink Bug

Dear Kimberly,
While they are not dangerous to humans, pets or furnishings, the Brown Marmorated Stink Bug can be quite a nuisance when they enter homes as the weather cools so that they can hibernate.  This is an invasive, exotic species that was first discovered near Allentown, Pennsylvania in 1998, according to BugGuide.  This non-native species from China is a general feeder, and according to BugGuide:  “Damage reported in the US to apples, pears, peaches, cherries, corn, tomatoes, peppers, soybean, ornamentals…” and “Highly polyphagous, reported on ~300 plant spp. in its native range; feeds mostly on fruit, but also on leaves, stems, petioles, flowers, and seeds. Damage typically confined to the fruiting structures.”

 

What's That Bug? does not endorse extermination