Hylaeus mamoIslands: Oahu
Locations: Oahu - (Tripler Ridge)
Habitats: Mesic Forest
Xerces: No info.
Insects of Hawaii: This species is sympatric with H. mana, but the coloration is much more extensive. Due to the mark on the median plate, it would key to H. kona in Daly and Magnacca (2003). It is readily separated from those species and all others by the entirely yellow mandible, paraocular marks broad above the antennal sockets, orange front and middle legs, and yellow mark on the lower gena. Like H. mana, the antennal scape is also unusually narrow for a member of the dumetorum species group, and is more similar to that of the difficilis group. It does, however, possess a groove on the underside like the former.
Insects of Hawaii Volume 17
UH/DOD: While searching for H. mana on Tripler ridge in the central Koolau range during the last Oahu field trip of the survey, a single male was collected which turned out to be yet another new Oahu endemic species (Figure 9). It is instantly recognizable, as the only Hawaiian species with a yellow mark on the gena and the only one besides H. kona to have the mandibles yellow. It is quite small, like H. mana, and given that it has eluded detection for so long, it is probably similarly rare.
Hylaeus near military lands