Brown Stink Bug /E. servus
Order: Hemiptera
Family: Pentatomidae
Genus: Euschistus
-broad, shield-shaped bugs
-5 segmented antennae
-5-18 mm
-produce odors from thoracic glands for self-defense
Special Adaptations:
-Brown and green stink bugs have been reported as far north as Quebec. In the United States, however, they are more often injurious in the South. Both adults and nymphs of plant-feeding species may damage plants, mostly by piercing the plant tissues and thus opening a path for pathogens to enter the plant.
-Each female deposits up to several hundred eggs, usually in mid- or late June. These eggs are laid in clusters (averaging 36 eggs) primarily on leaves and stems but also on pods. Nymphs hatch from these eggs and pass through five instars before becoming adults. Approximately 5 weeks elapse between hatching and adult emergence.
Stink bugs inflict mechanical injury to the seed as well as transmit the yeast-spot disease organism. The degree of damage caused by this pest depends to some extent on the developmental stage of the seed when it is pierced by the stink bug's needlelike mouthparts. The younger the seed when damaged, the greater the yield reduction. Although late season infestations may not affect yield, bean oil content and germination will be reduced.
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