Cydnidae are a family of shield bug

Shield bug

Pentatomoidea is a superfamily of insects in the Heteroptera suborder of the Hemiptera order and, as such, share a common arrangement of sucking mouthparts...

s, known by common name

Common name

A common name of a taxon or organism is a name in general use within a community; it is often contrasted with the scientific name for the same organism...

s including burrowing bugs or burrower bugs. In some classifications, Cydnidae includes the family Thyreocoridae

Thyreocoridae

Thyreocoridae are a family of shield bugs, known by common names including negro bugs or ebony bugs. In some classifications, they are included as a subfamily within the family Cydnidae; some authors also refer to this family under the name Corimelaenidae, a junior synonym....

 (sometimes referred to as "Corimelaenidae"), which are known commonly as negro bugs or ebony bugs, and/or the family Parastrachiidae. Though similar in appearance to a beetle at casual glance, they can be distinguished by both their piercing/sucking mouthparts, and wing configuration (beetle elytra are split directly down the back of the insect). Of some 750 species of burrower bugs, 27 are reported as crop pests, and six species are thought to feed on peanut.

Burrower bugs are not regarded as significant pests, and relatively little is known of their biology.