Camponotus socius

Xeric sandhill woodlands and upland oak forests of the southeastern coastal plain. Requires well-draining sandy soils with partial to extensive shade coverage. Nests located at tree lines in semi-open areas, sometimes in dense Scrub Palmetto fields. Absent from most developed areas near human habitation.

Southeastern United States: Georgia, Alabama, Florida, North Carolina, South Carolina, and Mississippi. Type locality originally described as Brazil (Amazonas) is considered erroneous; species exhibits traits consistent with native North American origin.

Reproductive alates eclose by midsummer; nuptial flights occur August through early November. Diapause period extends 2–3 months in northern range. Diurnal activity peaks in early morning and late evening; midday retreat during hottest hours, though shaded colonies may remain active longer.

Omnivorous opportunist. Workers prey upon or scavenge arthropods, forage for honeydew from sap-sucking hemipterans on native shrubs, and have been observed feeding on lizard or bird feces for urea content.

Colonies overwinter reproductive brood, rearing into following year. Queens are fully claustral, excavating founding chambers the morning after nuptial flight, then remaining dormant for half a month to three months before raising first worker generation. Each colony produces few hundred alates annually; first flights largest, subsequent flights smaller.

Scout ants deposit hindgut material as chemical sign posts around food sources and lay hindgut trails from food to nest; mass foraging organized by individual recruiting ants. Inside nest, recruiting ants perform 'waggle' motor display (0.5–1.5 seconds, 6–12 strokes/second) facing nestmates head-on to stimulate up to ~30 ants successively. During nest site recruitment, display becomes more 'jerking', males are recruited, and non-responding nestmates are carried. Workers actively move between satellite nests. Excavating workers carry material far from nest to avoid mound building, depositing refuse irregularly near entrance.

Important component of undisturbed sandhill ecosystems; locally abundant in suitable habitat. Contributes to soil turnover through nest excavation.

Not a structural pest despite being a carpenter ant; nests exclusively in sandy soils rather than wood. Seldom encountered due to preference for undisturbed habitats and absence from most developed areas.

• Camponotus floridanusOverlaps in range (Florida); distinguished by arboreal nesting in wood and structural pest status, versus ground-nesting in sand for C. socius
• Camponotus pennsylvanicusSimilar large size and polymorphism; distinguished by black coloration, wood-nesting habit, and broader eastern distribution
• Camponotus sericeiventrisSimilar variegated gaster appearance; distinguished by golden-silvery pubescence, arboreal tropical distribution, and acute pronotal spines

Despite being a carpenter ant, does not damage homes or wooden structures. The type locality of Brazil is erroneous; the species is native to North America.

• carpenter ant
• ground-nesting
• sandhill
• xeric woodland
• polymorphic
• crepuscular
• southeastern US
• Formicinae
• Tanaemyrmex

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
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