Penelopides is the genus of relatively small, primarily frugivorous hornbills found in forests of the Philippines and the Indonesian island of Sulawesi. Their common name, tarictic hornbills, is an onomatopoetic reference to the main call of several of them. They have a ridged plate-like structure on the base of their mandible. All are sexually dimorphic, with males of all except the Sulawesi Tarictic Hornbill being whitish-buff and black, while females of all except the Mindoro Tarictic Hornbill are primarily black.
While the taxonomic history of the Sulawesi Tarictic Hornbill has been uneventful, the number of species in the Philippine Archipelago has been greatly debated. Traditionally, only a single Philippine species was recognized, the Tarictic Hornbill (P. panini). Following a review, it was recommended that it should be split into four allopatric species, the Visayan Tarictic (P. panini), Luzon Tarictic (P. manillae), Mindanao Tarictic (P. affinis), and Mindoro Tarictic (P. mindorensis). Today most authorities accept these splits, although some, for reasons that are unclear, also have recommended splitting the Samar Tarictic (P. samarensis) from the Mindanao Tarictic. The common names of all of the below are often shortened, leaving out "Tarictic".
- Sulawesi Tarictic Hornbill (Penelopides exarhatus)
- Visayan Tarictic Hornbill (Penelopides panini)
- Luzon Tarictic Hornbill (Penelopides manillae)
- Mindanao Tarictic Hornbill (Penelopides affinis)
- Samar Tarictic Hornbill (Penelopides samarensis)
- Mindoro Tarictic Hornbill (Penelopides mindorensis)