Yellow jacket

A yellow jacket is new bee in SLASH'EM. It shares the same glyph as the killer bee, and as such is easily mistaken for it, as it also appears in large groups.

Strategy
Although they look like killer bees, yellow jackets are considerably more dangerous, simply because they have many more hit points. They do not do a large amount of damage individually, but given that they appear in large groups and are relatively tough to destroy, they can be a considerable threat. Luckily, by the time they start appearing one's AC should be good enough to handle them.