Primary type information:
Primary type material: holotype worker. Primary type locality: North America (no further data). Primary type depository:
MNHU.
Type notes:
Wheeler, 1915b: 390, refers to “four cotypes of
silaceum” with collection data U.S.A.: Pennsylvania, Beatty (
P.J. Schmitt); these specimens (presumably in
MCZC) are not type material.