Rashi on Exodus 10:14/רש"י על שמות י׳:י״ד

1ואחריו לא יהיה כן NEITHER AFTER THEM SHALL BE SUCH — That plague of locusts which happened during the days of Joel of which it is said, (Joel 2:2) “there hath not been ever the like” — which statement teaches us that it was more grievous than that in the days of Moses — was, however, caused by many species of locusts, together, those called ארבה and ילק and חסיל and גזם; but that which happened in the days of Moses consisted of only one species (the ארבה) and any ארבה like that there never was and never will be.