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North Dakota's

Federally Listed Endangered, Threatened, and Candidate Species – 1995


Belfragii's Chlorochroan Bug (Chlorochroa belfragii (Stal))

GIF -- species photo gif--species map

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Status: Former Candidate (Note: As of February 28, 1996, this species is no longer listed as a Candidate species. However, it remains a species of management concern.)

Historical Status:
Belfragii's chlorochroan bug has been collected in 4 states and Canada. The states include: Nebraska (2 sites), South Dakota (1 site), Illinois (2 sites), and North Dakota (3 sites). In North Dakota the most recent collections have been at Carrington in 1988 and at Burning Coal Vein in 1972. In Canada there is one collection site in Aweme, Manitoba.

Present Status:
Currently, little is known about the present status of the Belfragii's chlorochroan bug.

Habitat:
Belfragii's chlorochroan bug appears to be associated with native wet prairie habitats and seems to be restricted to swamps, marshes, seeps, or similar riparian habitats.

Life History:
The Belfragii's chlorochroan bug belongs to the stink bug family Pentatomidae which is a large (over 200 North American species) and well-known group. In North America there are approximately 20 species in the genus of Chlorochroa. Based on taxonomy, this stink bug is likely to feed on grasses or related monocots which makes prairie cord-grass (Spartina pectinata) a prime suspect as a potential food plant. The Belfragii's chlorochroan bug utilizes a "chemical warfare" type of defense, by secreting a foul-smelling substance when disturbed.

Aid to identification:
Stink bugs are easily recognized by their shieldlike shape and five-segmented antennae. Stink bugs are the most common and abundant of the bugs that produce a disagreeable odor, however, some other bugs (particularly the broad-headed bugs) produce an odor that is stronger and more disagreeable than that produced by stink bugs. Many stink bugs are brightly colored and conspicuously marked. The Belfragii's chlorochroan bug is an elongate-ovate stink bug ranging from 1/2" to 5/8" in length. It is green to dark green with a distinct pale yellowish-white stripe along the midline of the scutellum. The tongue of the scutellum is margined with black. The eggs of stink bugs, are barrel-shaped and are usually laid in groups.

Reasons for decline:
Little is known about its reasons for decline; however, the loss of native wet prairie habitats has probably been a contributing factor. Insecticides may also be harmful to stink bugs.

Recommendations:
Notify a natural resources agency on any suspected Belfragii's chlorochroan bug sightings.

Comments:
The Belfragii's chlorochroan bug is also commonly known as the "green stink bug"

References:
Taxonomic status of the genera ChlorochroaStal, RhytidilomiaStal, LiodermionKirkaldy, and Pitedia Reuter, and their included species (Hemiptera: Pentatomidae) by D.B. Thomas 1983. Annals of the Entomological Society of America. 76(2): 215-224.
The Green Stink Bug Genus Chlorochroa Stal (Hemiptera: Pentatomidae) in Canada by G.G.E. Scudder and D.B. Thomas, Jr., 1987. The Canadian Entomologist. 119:83-93.


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