High Quality Content by WIKIPEDIA articles! Within the insect order Hymenoptera, Halictinae is the largest, most diverse, and most recently diverged of the four unique Halictidae subfamilies. It comprises over 2400 bee species belonging to the five taxonomic tribes Augochlorini, Thrinchostomini, Caenohalictini, Sphecodini, and Halictini, which some entomologists alternatively organize into the two tribes Augochlorini and Halictini.