Gibbasilus alboala sp. n. ♂ wing (note backlighting obliterates opaque, milky basal membranes).
Part of:
Londt JGH (2016) A review of the genus
Gibbasilus
Londt, 1986 in southern Africa (Diptera, Asilidae). African Invertebrates 57(1): 67-81.
https://doi.org/10.3897/AfrInvertebr.57.8696