וַיִּתֵּ֣ן לֶחָסִ֣יל יְבוּלָ֑ם וִֽ֝יגִיעָ֗ם לָאַרְבֶּֽה׃
He gave also their increase unto the caterpillar, And their labour unto the locust.
Read Kabbalistic (mystical) interpretations of Psalms 78:46: Zohar and classical Jewish mystical sources, free online.