There is a honeybee statblock in Wilds Beyond the Witchlight. Also a regular spider in the Monster Manual, which could work just as well. Apparently the average spider in the Forgotten Realms is poisonous enough to have a 15% chance of immediately killing an average commoner with a single bite
Nah, more dangerous. People rarely die of spider bite down here in Australia. Been like 8 deaths to the world's most deadly spider over recorded history. Sure, that number is probably artificially low cos back in the old days some bites would've just been written off as a heart attack etc, but it's still surprisingly low compared to say deaths by cow etc.