The Hylaeus of the Bonin Islands, Western Pacific Ocean (Hymenoptera Colletidae)
Four species of Hylaeus are known to occur on the Bonin Islands: H. (Paraprosopis) yasumatsui, n. sp., H. ikedai (Yasumatsu), H. ( Nesoprosopis) honinensis Yasumatsu and H. incoinitatits, n. sp. These bees appear to represent a relict fauna with relationships from the Palearctic, Micronesian and Oriental Regions. The zoogeographic peculiarities of each species are discussed. All species are described and illustrated in detail and a key for their separation is provided.
Snelling, Roy R.
"The Hylaeus of the Bonin Islands, Western Pacific Ocean (Hymenoptera Colletidae),"
Bulletin of the Southern California Academy of Sciences:
Available at: http://scholar.oxy.edu/scas/vol69/iss1/2