For about twenty years, beginning in the 1860's, from December till February, Guam was infested with wasps from about noon till five o'clock on hot, still days. The bees were believed to have originated on a boat which crashed on shore and broke up. The sting from these wasps was sharp and burning.
Chamorros bathed in water with tobacco leaves or vinegar to treat the sting. The Spanish priest used camphorated oil and experienced immediate relief.
(P. Aniceto's Chronicle)