Hylaeus hirsutulusIslands: Kauai
Locations: Kauai - (Alakai Wilderness, Mohihi Trail, Milolii Rd., Nualolo Cliff Trail)
Habitats: Widespread, from dry shrub land to wet forest, mountains and lowlands, but not common.
Plants: Chamaesyce, Metrosideros, Styphelia
Xerces: No info.
Insects of Hawaii: Medium-sized bees with dark smoky wings. Male face with an ivory or yellowmark (clypeus and supraclypeal area, with or without lower paraocular areas), unusual lateral process of S7 very short, median process of S8 not dilated, apex simple; unusual gonoforceps expanded apically beyond penis valves. Female black and unmarked. Sister species of H. perkinsianusi, see treatment of that species.
The measured male of H. hirsutulus has an extreme ratio interocellar distance/ diameter of median ocellus at 1.5 and a very high ratio ocellus-eye distance/interocellar distance at 1.3. The ratios indicate that the lateral ocelli are unusually close together with respect to the diameter of the median ocellus and are well separated from the eyes.
Insects of Hawaii Volume 17
Hylaeus near military lands