What types of stink bugs live in Louisiana?
So you probably know that stink bugs stink, but they don’t stink all the time. Instead, they will spray their stink juice from holes all over their body when frightened as a defense mechanism or if you squish them.
And if that isn’t bad enough, some stink bugs can bite. Luckily, it will only sting for a second and is not venomous!
Here are 11 kinds of stink bugs found in Louisiana:
#1. Brown Marmorated Stink Bug
- Halyomorpha Halys
- Brown on top and creamy whitish brown on the bottom. But colors can vary to red, grey, light brown, copper, or black.
- Blunt head has light and dark bands on antennae and around abdomen edges with a pale ring on each leg.
The Brown Marmorated Stink Bug gets the award for the biggest pest in Louisiana.
This stink bug was first seen in Allentown, Pennsylvania, in September 1998. It is believed that this stink bug hitched a ride from China or Japan in a shipping container. But, unfortunately, your Amazon packages were not the only thing making their way here.
Brown Marmorated Stink Bug Range Map
This stink bug emerges in spring and can produce five generations annually in warm weather. The Brown Marmorated Stink Bug’s habitat includes gardens, parks, and agricultural fields.
This species eats over 100 plants such as ornamental fruits and vegetable crops. They will eat the juice of the fruits and veggies. These stink bugs cause pitting and scarring of the fruit, and also introduce microorganisms that cause decay.
Then in the fall, this stink bug seeks shelter from the cold weather.
Up to hundreds will seek refuge indoors and can become a massive nuisance. They look for openings, such as gaps in vents, windows, and doors.
But don’t worry, the Brown Marmorated Stink Bug doesn’t bite people or pets, and they don’t spread disease. But be careful not to pick them up or squash them because they will release their stink spray with a nasty odor.
Find out why the Brown Marmorated Stink Bugs stink.
#2. Green Burgundy Stink Bug
- Banasa dimiata
- Front pale green or yellow, rear dark green or reddish-brown.
- The underside of the abdomen may have or may not have black dots along the sides.
The stink bug is common and abundant throughout Louisiana.
Green Burgundy Range Map
You will find the stink bug on many different trees and shrubs such as Dogwoods, Honeysuckles, and various fruit trees from spring through fall. In winter, the adults seek shelter in outbuildings or anywhere they can. So you may find them anywhere around your home, inside or out.
Like many other stink bugs, this species is common prey of parasitic wasps and flies.
#3. Blue Shieldbug
- Zicrona Caerulea
- Metallic blue-green shield and a dark wing membrane.
- During the nymph stage are red with black spots; look like ladybugs with longer antennae and legs.
I think Blue Shieldbugs are the prettiest stink bugs in Louisiana.
But honestly, they look more like beetles to me.
Blue Shieldbug Range Map
Look for the Blue Shieldbug in its natural habitat which consists of low vegetation such as damp grassland and forest edges.
This stink bug eats the larvae of various beetles, caterpillars, and moths and feeds on plants.
#4. Rough Stink Bug
- Brochymena Quadripustulata
- Color can vary from brown, gray, and blackish gray with stripes and orange spots.
- Also known as the Four-Humped Stink Bug.
This species is one of the more common stink bugs throughout Louisiana.
Rough Stink Bug Range Map
Rough Stink Bugs are known to eat 18 different types of plants. Unfortunately, they eat many crops, such as corn, apples, and soybeans.
You can tell if the stink bug has been eating your plants because of the leaf destruction and scarring and pitting on the fruit or vegetable. Typically, this insect will infest crops up to 40 feet (12.1 m) from the edge of the field. This is called the edge effect.
The Rough Stink Bug prefers warmer weather but has learned to survive and thrive in cooler temperatures. But do not fear, if they have moved into your home, they can’t feed or reproduce. Then once the weather gets warmer, they will try to move back outside.
#5. Spined Soldier Bug
- Podisus Maculiventris
- Brown with a spine on each shoulder that points out not foward.
- Legs are yellowish.
The Spined Soldier Bug is beneficial; they eat many other nasty bugs. Like their name, they are soldiers and soldiers protect.
This stink bug species is common throughout Louisiana and should be a welcomed guest to your garden. Unfortunately, they prefer to eat caterpillars of the gypsy moth and larva of many beetles considered pests to gardeners.
Spined Soldier Bug Range Map
The Spined Soldier Bug also will feed on some juices of plants. The good news is that they are not capable of causing any harm to plants.
#6. Mormidea Lugens
- Mormidea Lugens
- Small in size bronze and black with a tannish-white V shape mark on the shield.
- Legs are yellowish-white.
It may surprise you that this stink bug can be found from the Caribbean up to Louisiana.
This stink bug prefers its habitat in grasses but can be found on many other plants.
Mormidea Lugens Range Map
This species likes to feed on Timothy Sedges and wide-leaved spiderwort.
#7. Anchor Stink Bug
- Stiretrus anchorago
- Colors and patterns vary; they can be black with white, pink, orange, red, or nothing but black.
- All have a U-shaped shield abdomen.
- Anchorago refers to the anchor-like pattern on their shield.
The Anchor Stink Bug prefers its habitat on various herbaceous plants such as coneflowers and most annuals and biennials.
Anchor Stink Bug Range Map
This stink bug feeds on beetle larvae and caterpillars such as the Mexican Bean and Japanese.
Unfortunately, the Anchor Stink Bug is a frequent predator of Monarch Butterfly caterpillars!
#8. Harlequin Bug
- Murgantia histrionica
- Smooth body and shieldlike in outline.
- Brightly marked, mostly shiny black with reddish-orange and white markings, to primarily orange.
- Also known as the Calico Bug and FireBug.
This species is common in gardens, fields, and roadsides in Louisiana.
You will most likely see this insect in spring and summer.
Harlequin Bug Range Map
The Harlequin Bug feeds on plants in the cabbage and tropical trees and bushes in the caper family. Therefore, they are often considered pests.
You will often find adults of this species mating on plants, and they will be attached end to end. Sometimes you may find their eggs on plants. Their eggs look like little black and white barrels, which is unique.
#9. Rice Stink Bug
- Oebalus pugnax
- Narrow shield, yellowish straw color, with sharp points on corners of their shield.
- Yellow triangle on the center of the shield.
- Some have gray coloring near the yellow triangle, while others may have darker brown.
As the name suggests, the Rice Stink Bug is a pest of rice crops.
Rice Stink Bug Range Map
When this stink bug eats the rice, they damage the developing seed head and leave an empty shell or shriveled kernels. In addition, this damage can cause microorganism diseases and other crop losses.
The Rice Stink Bugs also attack crops with tiny seeds, such as sorghum, oat, barley, and wheat. You can find these stink bugs also living in wild grasses such as barnyard grass, Johnson Grass, and sedge.
These insects are incredibly mobile and can travel in huge masses, going in and out of fields quickly searching for more tasty food.
Check out this video about how much damage the Rice Stink Bug can cause.
#10. Black Stink Bug
- Proxys punctulatus
- Black with black and cream legs, very pointy shoulders point forward.
- One white spot in the center of the shield.
Luckily, Black Stink Bugs don’t appear to damage crops in Louisiana.
Black Stink Bug Range Map
Instead, they seem to help keep away pests from farm fields. Look for this species foraging for insect larvae on cotton, soybean, and citrus fields.
They also feed on plant juices, but they never reach high populations, so their damage to the plants is very minimal.
Over winter, you typically find the Black Stink Bug under leaf litter or inside logs, hibernating together to stay warm.
#11. Florida Predatory Stink Bug
- Euthyrhynchus floridanus
- Color can vary from bluish-black or purplish-brown bodies.
- Red or reddish-orange spots on the sides and top of the shield.
- Short and thick beak-like mouthparts.
The Florida Predatory Stink Bug is native to the hottest parts of Louisiana. Unfortunately, this species likes it hot and needs to be warm all year to survive!
Florida Predatory Stink Bug Range Map
Make sure not to disturb them! They are beneficial to plants and crops as these carnivorous stink bugs feed on many species of pest insects.
This species differs from others because they hunt in packs of up to twelve.
See what happens if you hold the Florida Predatory Stink Bug and how this species eats its prey.
Do you need additional help identifying stink bugs in Louisiana?
Try this field guide!
Which of these stink bugs have you seen in Louisiana?
Leave a comment below!