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Scentless Plant Bug (Niesthrea louisianica)

Order: Hemiptera (he-MIP-ter-a) (Info)
Family: Rhopalidae (ro-PAL-ih-dee) (Info)
Genus: Niesthrea
Species: louisianica (loo-ee-see-AN-ih-ka) (Info)


This bug has been reportedly found in the following regions:

Gadsden, Alabama (2 reports)
Vincent, Alabama
Weaver, Alabama
Barling, Arkansas
Marion, Arkansas
Greensboro, North Carolina
Mooresville, North Carolina
Rock Hill, South Carolina
Austin, Texas
Helotes, Texas
Mc Kinney, Texas
San Antonio, Texas
Bumpass, Virginia
Sterling, Virginia
Show all

Members' Notes:


On Aug 23, 2017, HokesBluff from Gadsden, AL wrote:

I live in Hokes Bluff Al. I see this bug on my rose of Sharon every summer. They are invading!! Killing the buds, drying them out, they turn brown and fall off. I've tried several things to kill them wit no luck. How can I get rid of this damaging bug??


On Aug 11, 2014, Desirai from Glencoe, AL (Zone 8a) wrote:

In Alabama, I find these bugs all summer long in the seed pods of my hibiscuses and mallows. They don't seem to be doing any actual harm to the plant so I don't bother trying to remove them.


On Sep 8, 2008, Snug_As_Bug_Rug from Sterling, VA (Zone 7a) wrote:

Very colorful bug with bright orange accents - looks as if it could be a cloisonne jeweled ornament!


On Nov 20, 2006, htop from San Antonio, TX (Zone 8b) wrote:

The scentless plant bug (Niesthrea louisianica) is native from Arizona to Florida north to New York and West to Iowa in the Mississippi Valley. Nymphs and adults feed on seeds of malvaceous plants. Host plants include rose of Sharon (Hibiscus syriacus), hibiscus, spurred anoda (Anoda cristata)and abutilon species. I found it feeding on a rock rosemallow (Pavonia lasiopetala) plant seeds. It feeds on flower buds, spent flowers and seeds. Masses of eggs are laid and are deposited on the undersides of leaves. Many times there are more than one generation per year.

Niesthrea louisianica are of great economic impact by reducing the seed viability of the weed velvet leaf, butter print, China jute (Abutilon theophrasti) which is a member of the Malvaceae family. It is is a ma... read more