Abstract A new species of robber fly from New Caledonia , Promachus insolitus sp. nov., is described and illustrated. A new subgenus, Neocaledomachus subgen. nov., is also erected for the new species, which is distinguished from all other subgenera by the unique female ovipositor with enlarged cerci wedged into tergite 9 and the presence of ventro‐lateral projections on tergite 9.
Szczepański et al. (Mon,) studied this question.