Corn delphacid

Definition

A common name for Peregrinus maidis, a small planthopper (family Delphacidae, order Hemiptera) that is a major pest of maize (Zea mays) and related grasses throughout tropical and subtropical regions worldwide. The species causes direct feeding damage to corn seedlings and shoots, and serves as the principal vector for several economically significant maize viruses including maize stripe virus and maize mosaic virus.

Etymology

From 'corn' (maize, the primary host) + 'delphacid' (member of family Delphacidae, from Greek delphax 'young pig,' referring to the swollen, pig-like facial profile characteristic of the family).

Example

In subtropical maize-growing regions, heavy infestations of corn delphacids can stunt plants and transmit maize stripe virus, causing yield losses that prompt integrated pest management programs combining resistant cultivars, adjusted planting dates, and biocontrol agents.

Synonyms

• corn planthopper
• shoot bug
• maize delphacid

Related Terms

• Delphacidae
• planthopper
• maize stripe virus
• Vector
• Hemiptera
• Peregrinus maidis

Usage Notes

The term is used primarily in agricultural entomology and crop protection literature. 'Corn planthopper' is the more widely used common name in international contexts, while 'shoot bug' appears in some regional agricultural extension materials. Specialists generally prefer the scientific name Peregrinus maidis to avoid confusion with other corn-feeding delphacids. The common name should not be capitalized unless beginning a sentence.