|Adults of Zicrona caerulea|
|Nymph of Zicrona caerulea preying a larva|
Zicrona caerulea, common name Blue Shieldbug, is a species of bugs belonging to the Pentatomidae family.
Zicrona caerulea can reach an adult size of about 5–8 millimetres (0.20–0.31 in). The body is uniformly metallic blue-green (hence the Latin name caerulea, meaning blue). In the immatures the abdomen is red with black markings.
These bugs are useful predators of leaf beetles in the genus Altica, of larvae of various beetles and caterpillars of moths, but it also feeds on plants. Eggs are laid in the spring. New adults of this univoltine species can be found from July onwards. This bug overwinters as an adult.
Distribution and habitat
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