Atta septentrionalis McCook, 1881a: 362 (w.) U.S.A. (New Jersey). Nearctic.

Primary type information: Primary type material: syntype workers (number not stated). Primary type locality: U.S.A.: New Jersey, Island Heights, N bank Tom’s River, ca 40 °N, ix.1880 (H.C. McCook or G.K. Morris). Primary type depository: unknown (no material known to exist). Type notes: Both potential collectors observed the same nest, but who collected the type series is not recorded.