Abstract
The Nearctic genus Philetus Melander, 1928 is a rarely collected group of empidid flies that contains two western species, namely P. memorandus Melander and P. schizophorus Melander. The genus was fully diagnosed by Cumming et al. (2016) with both known species redescribed and their distributions mapped. Here we describe a third species of Philetus from a single male collected recently in the Richardson Mountains of the Yukon Territory in Canada and provide a key to species based on male morphology. Terms used for adult structures follow those of Cumming & Wood (2017) and methods follow those outlined in Cumming et al. (2016).
References
Cumming, J.M., Brooks, S.E. & Sinclair, B.J. (2016) Review of the little-known western Nearctic fly genus Philetus Melander (Diptera: Empididae), with a discussion of its phylogenetic assignment. Zootaxa, 4093 (2), 261–274.
https://doi.org/10.11646/zootaxa.4093.2.7
Cumming, J.M. & Wood, D.M. (2017) Adult morphology and terminology [Chapter] 3. In: Kirk-Spriggs, A.H. & Sinclair, B.J. (Eds.), Manual of Afrotropical Diptera. Vol. 1. Introductory chapters and keys to Diptera families. Suricata 4. SANBI Graphics & Editing, Pretoria, pp. 89–133.
Melander, A.L. (1928) Diptera, Fam. Empididae. In: Wytsman, P. (Ed.), Genera Insectorum. Fasc. 185. Louis Desmet-Verteneuil, Bruxelles, pp. 1–434. [1927]