Codrus appears in Virgil's Eclogues and later pastoral poetry as a shepherd celebrated for his singing abilities, his name becoming associated with pastoral artistry. The character embodies the continuity of pastoral song across generations, often teaching or inspiring younger shepherds. Codrus enriches the bucolic tradition by emphasizing that pastoral poetry has a history and lineage, with master singers passing their craft to successors, ensuring the genre's perpetuation and development.

Codrus appears in Virgil as a poor shepherd-poet, his poverty becoming proverbial in later literature. Despite material want, Codrus possesses poetic gifts, embodying the idea that artistic talent transcends economic circumstances. Poets invoke Codrus when celebrating art's independence from wealth, defending poetry's value against materialistic measures, or depicting the struggling artist. The character represents the tradition of the impoverished but talented poet, anticipating later Romantic notions of the starving artist. Codrus demonstrates pastoral's awareness of economic realities while insisting on art's spiritual or aesthetic value beyond financial reward.