[English > Japanese] Gift for a friend

Hello everyone. To make a gift for a friend's birthday, I need help with the best translation of two dirfferent phrases:

"How many of you are there?", to ask how many people are inside a group. For example, you're being asked from the restaurant when booking a table.

"What kind of insects are you?" Directed to the group of people (It's an inside joke that only works in my local dialect in italy).

Thanks to anyone who is willing to help me with this one!