Piezodorus guildinii

{{Speciesbox

| image = Piezodorus guildinii 03.jpg

| genus = Piezodorus

| species = guildinii

| authority = (Westwood, 1837)

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Piezodorus guildinii, known generally as red-banded stink bug, is a species of stink bug in the family Pentatomidae. Other common names include the small green stink bug and alfalfa bug.

File:Piezodorus guildinii 01.jpg

Redbanded stink bugs are neotropical and range in geographic distribution from Argentina north to the southern United States, where they can be frequent pests of soybeans.{{cite journal |last1=Panizzi |first1=A. R. |last2=Slansky Jr. |first2=F. |title=Review of phytophagous pentatomids (Hemiptera: Pentatomidae) associated with soybean in the Americas |journal=The Florida Entomologist |date=1985 |volume=68 |issue=1 |pages=184–214|doi=10.2307/3494344 |jstor=3494344 }} A variety of chemical control options are utilized by soybean growers, though redbanded stink bugs are less susceptible to insecticides than other common species.{{cite journal |last1=Bauer |first1=M. E. |last2=Sosa-Gomez |first2=D. R. |last3=Ottea |first3=J. |last4=Leonard |first4=B. R. |last5=Corso |first5=I. C. |last6=Silva |first6=J. J. D. |last7=Boethel |first7=D. J. |title=Susceptibility to insecticides used for control of Piezodorus guildinii (Heteroptera: Pentatomidae) in the United States and Brazil |journal=Journal of Economic Entomology |date=2010 |volume=103 |issue=3 |pages=869–876 |doi=10.1603/ec09364|pmid=20568634 }} Insecticides applied for control of the redbanded stink bug (often applied late in the growing season) often consist of broad spectrum chemicals. Alternative control options to control this pest in soybeans are needed, including environmentally friendly and commercially available biological control options like the fungal pathogen Beauveria bassiana.{{cite journal |last1=Parys |first1=K |last2=Portilla |first2=M |title=Effectiveness of Beauveria bassiana against Piezodorus guildinii (Hemiptera: Pentatomidae), a key pest of soybeans in the neotropics |journal=Biocontrol Science and Technology |date=2020 |volume=30 |issue=5 |pages=451–461 |doi=10.1080/09583157.2020.1731426|bibcode=2020BioST..30..451P }}