Empis (Enoplempis) arrecta, Sinclair & Brooks & Cumming, 2025

Sinclair, Bradley J., Brooks, Scott E. & Cumming, Jeffrey M., 2025, Revision of the western Nearctic species of Empis subgenus Enoplempis (Diptera: Empididae), Zootaxa 5615 (1), pp. 1-200 : 11

Empis (Enoplempis) arrecta species group

( Figs 15–40 )

Four species are included in this group, E. (En.) arrecta sp. nov., E. (En.) diokra sp. nov., E. (En.) occidentalis sp. nov. and E. (En.) shoshona sp. nov., which are distinguished by the male cercus with upright, narrow anterior lobe and low posterior lobe (e.g., Figs 15, 22 , 26 ), phallus with lateral roughened lobe (e.g., Fig. 25 ), subepandrial process present (e.g., Fig. 26 ), abdomen tergites shiny in both sexes, without pruinescence (e.g., Figs 15, 22 ), and male hind femur with preapical row of thickened posterior setae (e.g., Figs 19, 20 ).

Figures

FIGURES 15–22. Male thorax, abdomen and terminalia, and hindleg of the E. (Enoplempis) arrecta species group. 15, E. (En.) arrecta sp. nov., abdomen, terminalia and hindlegs, lateral view; 16, same, hindlegs, anterior and posterior views; 17, E. (En.) diokra sp. nov., hindlegs, anterior and posterior views; 18, same, hind femur tibia joint, anterior view; 19, same, hind femur tibia joint, posterior view; 20, same, apex of hind femur, dorsal view; 21, same, thorax, dorsal view; 22, same, abdomen and terminalia, lateral view.

FIGURES 23–27. Male terminalia of the E. (Enoplempis) arrecta species group. 23, E. (En.) arrecta sp. nov., lateral view; 24, same, phallus, lateral view; 25, same, phallus, posterior view; 26, E. (En.) diokra sp. nov., lateral view; 27, same, phallus, lateral view. Abbreviations: cerc—cercus; ej apod—ejaculatory apodeme; epand—epandrium; hypd—hypandrium; sbepand proc—subepandrial process.

FIGURES 28–31. Male head, thorax, abdomen and terminalia, and hindleg of E. (Enoplempis) occidentalis sp. nov. 28, head and thorax, dorsal view; 29, abdomen, terminalia and hindlegs (holotype), lateral view; 30, hindleg, anterior view; 31, hindleg, posterior view.

FIGURES 32–34. Holotype male head, thorax and hindleg of E. (Enoplempis) shoshona sp. nov. 32, head and thorax, dorsal view; 33, hindlegs, lateral view; 34, hind femur tibia joint, anterior and posterior views.

FIGURES 35–39. Male terminalia of the E. (Enoplempis) arrecta species group. 35, E. (En.) occidentalis sp. nov., lateral view; 36, same, phallus, lateral view; 37, same, phallus, posterior view; 38, E. (En.) shoshona sp. nov. (holotype), lateral view; 39, same, phallus (holotype), lateral view.

FIGURE 40. Known geographical distribution of the E. (Enoplempis) arrecta species group: E. (En.) arrecta sp. nov., E. (En.) diokra sp. nov., E. (En.) occidentalis sp. nov., E. (En.) shoshona sp. nov.