Part of a biblical plague (6)

I believe the answer is:
locust
'part of a biblical plague' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for locust that I've seen before include "Voracious grasshopper that travels in swarms" , "plaguey type" , "Voracious African or Asian grasshopper" , "Ravenous insect" , "Vegetation-destroying grasshopper" .)