Hylaeus anomalus

Abnormal Yellow-faced Bee
(Hylaeus anomalus)

syn. Nesoprosopis anomalus


Hawai'i Islands: O'ahu

local name: -

size: (?)

extinction date: after 1930 (?)

The females of the Abnormal Yellow-faced Bee are resp. were easily recognizable by their red coloured head.

This quite large bee comes from the island of O'ahu, where it lived on the leeward hill sides of the Ko'olau Mountains, somewhat above Hawai'i's capital city of Honolulu.

It was found quite commonly in the years between 1892 and 1930, but could not be found again in later searches.

It is assumable, that the vanishing of certain native plant species (Boehmeria grandis, Pipturus albidus), which were host plants for the bee's larvas, played an importand role in the species' demise.


Abnormal Yellow-faced Bee (Hylaeus anomalus)

depiction from 'Fauna Hawaiiensis; being the land-fauna of the Hawaiian islands. by various authors, 1899-1913. Cambridge [Eng.]: The University press, 1913.



- Howell V. Daly; Elwood Curtin Zimmerman; Karl N. Magnacca: 'Insects of Hawaii; Volume 17; Hawaiian Hylaeus (Nesoprosopis) Bees (Hymenoptera, Apoidea) (2003)
- K. N. Magnacca: Species Profile: Hylaeus anomalus. In Shepherd, M. D. M. Vaughan, and S. H. Black (Eds.) Red List of Pollinator Insects of North America. The Xerces Society for Invertebrate Conservation, Portland, Oregon 2005