Figure 4. from: Studies in Hawaiian Diptera III: New Distributional Records for Canacidae and a New Endemic Species of Procanace - Biodiversity Data Journal 4: e5611 (08 April 2016) https://doi.org/10.3897/BDJ.4.e5611

Figure 4. - External male genitalia of P. hardyi. The narrowed, lightened tips of the surstyli suggest that this species is most closely related to P. constricta. Refer to figure 162e from Hardy and Delfinado (1980).