Here are the regex patterns eqalert is using for each of those spells landing on another character, they should work fine in GINA just swap out the part of the expression GINA uses {s} for.
spell_winged_death_other_on: "^[a-zA-Z`\s]+ is engulfed in a swarm of deadly insects\.$"
spell_drones_of_doom_other_on: "^[a-zA-Z`\s]+ is engulfed in a swarm\.$"
Note: Creeping Crud, Drifting Death, Drones of Doom, and Stinging Swarm all share the same message for landing on another character:
https://github.com/mgeitz/eqalert/bl...py#L7917-L7922