 "Not your charismatic macrofauna... "  Challenge

"CARPENTER " NANO

water dweller = GIANT ostracod or GIANT red mysid (your choice)

creepy crawly = BLACK widow or BLACK and yellow argiope spider (your creepy choice)

creepy crawly dwellers = south african FLAT rock scorpion

Thank god for other people's lists so that I know what the heck I'm doing...