Hylaeus volcanicusIslands: Maui, Hawaii
Locations: Maui - (Holua, Halemauu Trail, HVC, Kalapawili Ridge, Kaupo Trail, Kilohana, Kipahulu Valley, Kuiki, Laie, Lauulu Trail, Lihau Summit, Oili Puu, Paliku, Puu Keokea, Puu Maile, Puu Mamane, Science City, Sliding Sands Trail, Upper Koolau Gap, Waikane)
Hawaii - (Bird Park, Byrons Ledge, Crater Rim Trail, Devestation Trail, Footprints Trail, Hualalai Summit, Kilauea Iki, Kipuka Maunaiu, Kipuka Nene, Kipuka Puaulu, Kulani Cone, Lupea, Mauna Loa Rd., Mauna Loa Trail, Napau Trail Puu Waawaa, Redleg Trail, Saddle, Tree Molds)
Habitats: Dry montane and subalpine shrubland, usually on recent lava flows.
Plants: Argyroxiphium, Coprosma, Dodonaea, Dubautia, Metrosideros, Myoporum, Sophora, Styphelia
Xerces: No info.
Insects of Hawaii: Medium-sized bees with clear wings. Male with long malar space, scape slightly dilated, face with oval yellow mark (c1ypeus, supraclypeal area, lower paraocular areas) divided by fine black sulci, lateral process of S7 narrow, and median process of S8 not dilated and with long narrow tips. Female with medium to long malar space; black and unmarked. For similar species, see remarks for H. nivicola and H. difficilis,
See remarks for H. nivicola and H. difficilis.
Insects of Hawaii Volume 17
Hylaeus near military lands