It's a stink bug.
More specifically - from Wiki -
Pentatomidae, Greek
pente meaning
five and
tomos meaning
section, is a family of
insects belonging to order
Hemiptera including some of the
stink bugs and
shield bugs.
[1] The scutellum body is usually
trapezoidal in shape, giving this family the name 'shield bug'. The tarsi are 3-segmented. The forewings of stink bugs are called
hemelytra, with the basal half thickened while the apex is membranous (as are the hindwings). The name stink bug derives from their tendency to eject a foul smelling glandular substance secreted from pores in the thorax when disturbed; in some species the liquid contains
cyanide compounds with a rancid almond scent. This is a form of
antipredator adaptation.
The idiomatic term "stink bug" is also applied to distantly related species such as
Boisea trivittata, the "boxelder bug", and entirely different types of insects such as beetles in the genus
Eleodes ("
pinacate beetles").
Many stink bugs and shield bugs are considered agricultural
pest insects, because they can create large populations, which feed on crops (damaging production), and they are resistant to many
pesticides. However, some genera of Pentatomidae are considered highly beneficial: the anchor bug, which can be distinguished by the red-orange anchor shape on the adult, is one example. It is a predator of other insects, especially
Mexican bean beetles,
Japanese beetles, and other pest insects.
Spined soldier bug,
Podisus maculiventris preying on larvae of
Epilachna varivestis
Anchor bug (
Stiretrus anchorago) valued as a predator on crop pests.
They also are commonly eaten in
Laos, and are regarded as delicious due to their extremely strong odor. The insects are sometimes pounded together with spices and a seasoning to prepare
cheo, a paste mixed with chilies and herbs.