Leptothorax schaumii Roger, 1863 an obsolete combination of Temnothorax schaumii (Roger, 1863)
Leptothorax schaumii Roger, 1863a: 180 (w.) U.S.A. (Pennsylvania). Nearctic.
Primary type information: Primary type material: syntype workers (number not stated, “a few”). Primary type locality: U.S.A.: Pennsylvania (Schaum). Primary type depository: unknown. Type notes: Mackay, 2000: 404, says no material could be found in MNHU, “probably no longer exist”.
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