Abstract
Diogmites bilobatus sp. nov. is described from museum specimens collected in the south central and southwestern United States and northern Mexico. Its close resemblance to the widespread D. angustipennis Loew is established. Diogmites grossus Bromley syn. nov., D. pulcher (Back) syn. nov., and D. symmachus Loew syn. nov. are synonymized with D. angustipennis, and lectotypes are designated for D. angustipennis and D. symmachus. Notes on morphological variation, habitat, prey, distribution, and phenology are provided for D. bilobatus sp. nov. and D. angustipennis.References
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