The index lists those keys posted or being developed, and provides direct access to specific keys when the group membership (taxon) of a specimen is already known. In this index, "¶" indicates that the key is in a condition of being constructed (usually this means most but not all species known from Hawai‘i are included in the particular key). If an active link is provided from here, then the key (or incomplete key if under construction) is posted at the web site. Throughout the key, undeveloped links go to the document back cover. A number in parentheses below gives the entities separated by the key; usually the number of species (including listing such as "genus sp."), but excluding couplets terminating at any taxon above genus.