The antenna tag is currently defined to cover both the electrical and biological antenna, so it seems like it should be split to separate the biological antennae and the mechanical antenna. Both types have a different appearance in the image, so they really shouldn't be clumped together.
The biological kind are currently the dominate type of image under the tag. If the biological type is given the antenna tag, then the alias of antennae -> antenna should be reversed, as biological antenna normally come in pairs. Even if we don't give antenna to the biological kind, antennae should be the label for the them.
Updated by a moderator