Seed bugs

Definition

A vernacular grouping of true bugs (Hemiptera) whose nymphs and adults feed primarily on the seeds of vascular plants, typically belonging to the families Rhyparochromidae, Lygaeidae, and certain Pentatomidae. The term denotes an ecological guild rather than a formal taxonomic clade, encompassing species with convergent seed-feeding adaptations including elongated piercing-sucking mouthparts for penetrating seed coats and often reduced wings in some lineages associated with stable seed resources.

Etymology

From English 'seed' + 'bug', describing the dietary habit of feeding on plant seeds.

Example

The western conifer seed bug (Leptoglossus occidentalis, Coreidae) and members of Rhyparochromidae such as Nysius species are commonly encountered seed bugs, with the former becoming a household nuisance in autumn when seeking overwintering sites.

Related Terms

• true bugs
• Hemiptera
• Rhyparochromidae
• Lygaeidae
• pentatomid bugs
• guild
• Phytophagy
• seed predation

Usage Notes

Used loosely in field guides and pest management literature; specialists prefer family-level identification. Contrast with 'leaf bugs' or 'predatory bugs' for dietary guilds. Some seed bugs (e.g., certain Lygaeidae) are economically significant crop pests, while others are benign or beneficial as weed seed predators.