This tool is part of the Citrus Resource

Citrus Pests

 

Southern green stink bug

 

Scientific name

 

Nezara viridula (Hemiptera: Pentatomidae)

Other common names

 

SGSB

Similar species

 

green stink bug, Acrosternum hilare

Distribution

 

United States: Alabama, Arkansas, California, Florida, Georgia, Hawaii, Kentucky, Louisiana, Mississippi, North Carolina, Ohio, South Carolina, Tennessee, Texas, Virginia, and West Virginia.

Worldwide: tropical and subtropical regions of Africa, the Americas, Asia, Australasia, and Europe.

Native to Africa (Ethiopia).

Diagnostic characteristics

 
Adults
  • Solid green.
  • Shield-shaped.
  • Eyes dark red or black.
  • 14 - 19 mm (0.5 - 0.75 in.) in length.
  • Odorous glands on abdomen.
Immatures
  • 5 nymphal instars.
  • Resemble adult with shield shape.
  • First instars aggregate near egg mass and do not feed.
  • Second instars feed but remain aggregated.
  • Fourth and fifth instars are solitary feeders.
  • Black head, thorax, legs, and antennae appear in second instar.
  • Abdomen and spaces between 2nd, 3rd, and 4th antennal segments are red.
  • Wing pads apparent in the fifth instar.
Eggs
  • 1.0 mm (0.04 in.) in length, 0.75 mm (0.03 in.) in width.
  • Pale yellow to cream-colored when deposited.
  • Pink to bright orange just prior to hatching.
  • Cylindrical.
  • Deposited in tightly-packed clusters.
  • Glued to substrate.

Hosts

 
Citrus hosts

All Citrus species and their hybrids, but particularly destructive to common mandarins (including tangerine), Citrus reticulata.

Non-citrus hosts

Over 52 documented host plants including ornamentals, weeds, and cultivated crops. A partial list includes:

  • all cruciferous vegetables, Brassica oleracea
  • bean, Phaseolus vulgaris
  • coffee, Coffea spp.
  • corn, Zea mays
  • cotton, Gossypium spp.
  • Crotalaria spp.
  • peach, Prunus spp.
  • peanut, Arachis hypogaea
  • pecan, Carya illinoinensis
  • Sorghum spp.
  • soybean, Glycine max
  • tobacco, Nicotiana tabacum
  • tomato, Solanum lycopersicum
  • wheat, Triticum spp.

Host damage

 
Fruits

Feeds preferentially on young, developing fruits.

Twigs

Will feed on tender, growing shoots.

Biology

 

Southern green stink bugs overwinter as adults. In the spring, adults mate and then resume feeding. Eggs are deposited in clusters on the underside of leaves or on fruiting structures. Individuals progress through five nymphal instars. The time from egg to adult is 35 - 57 days, depending on temperature. Adults will commonly switch host plants.

Comments

 

Stink bugs prefer wild hosts. Populations build up on wild host plants, and adults may move to crops late in the season as preferred foods mature.

References

 

Squitier, J.M. 2010. Featured creature fact sheets: southern green stink bug, Nezara viridula (Linnaeus) (Insecta: Hemiptera: Pentatomidae). EENY-016. University of Florida. (http://edis.ifas.ufl.edu/in142).

Todd, J.W. 1989. Ecology and behavior of Nezara viridula . Ann. Rev. Entomol. 34: 273-92. (http://www.annualreviews.org/doi/abs/10.1146/annurev.en.34.010189.001421)

Authors

 

Weeks, J.A., A.C. Hodges, and N.C. Leppla

 

Citrus Pests
Content last updated June, 2012
idtools.org