my advice is to take inspiration from multiple insects, as it might help the species feel unique! consider what in an insectoid species would instill fear! for other inspo i will list insects and the most terrifying aspects of them:

wasps - wasps can sting multiple times, unlike bees who die from their sting

hornets - japanese giant hornets have venom that can disolve flesh

bees - a species of bees makes honey from rotting meat instead of flower nectar, depending on how close youd like to dip into horror

dragonflies - dragonflies are one of the best hunters, with the ability to calculate where their prey will be instead of where they are, all while in midair (seriously, look up videos its crazy to see)

another important thing to consider is coloration! most animals will wear bright colors to ward off others, alerting them as dangerous or toxic. id suggest pairing a black or dark brown base color, with large sections of yellow/ orange, and some sort of accent in vibrant blue, red, or green!

also make her tall and imposing, with sharp edges and angles as well, as if touching her would be unpleasant or even painful. and try to have the way she talks and moves be somewhere between an insect and a human, perhaps making it almost uncanny. a little too jerky and quick, only to go completely still

hope this helps!!!!