Key to males of Epironastes

1. Pronotal impression deep and confined to anterior third (Fig. 21); antennal club with ventral margin medially subangulate, outer surface with bitexturous portions subequal; pygidium with apical ridge bearing dense fringe of long setae across medial third; vestiture orange (Fig. 22); genitalia as in Figs. 27–28; body 14.8–17.5 mm long; southwestern woodlands of Western Australia (Fig. 56)............................................................. … Epironastes demarzi (Endrődi, 1971)

- Pronotal impression either shallow or if deep extending beyond anterior third; antennal club with ventral margin weakly or moderately arcuate, outer surface with bitexturous portions unequal; pygidium with apical ridge glabrous; vestiture either orange, yellow, or dark brown-black …..................................................................... 2

2. Clypeus truncate at apex (Fig. 47); head and pronotum as in Figs. 43, 45–47; sutural striae punctate in anterior half, elytral punctures becoming obsolete before subapical calli (Fig. 43); coxal vestiture dark brown to black (Fig. 44); genitalia as in Figs. 49–50; body 15.6–21.7 mm long; northwest to southeast band from Toodyay to Bremer Bay, Western Australia (Fig. 56)........................................................................… Epironastes nigrisetosus Carne, 1957

- Clypeus rounded at apex (Figs. 7, 36); sutural striae linear-punctate, elytral punctures not becoming obsolete before subapical calli (Figs. 3, 32); coxal vestiture pale yellow or orange (Figs. 4, 33); body 9.7–18.3 mm long…...................... 3

3. Last abdominal sternite with extremely numerous, long, pale setae bordering posterior margin (Fig. 33); elytra with deeply impressed punctures (Fig. 32); pygidium moderately convex (Fig. 34) and with numerous setae across base (Fig. 37); vestiture yellow (Fig. 33); head as in Fig. 36; genitalia as in Figs. 38–39; body 9.7–14 mm long; northwest to southeast triangle from Wurarga to Southern Cross and Kukerin, Western Australia (Fig. 56)............... … Epironastes limbatus Carne, 1957

- Last abdominal sternite with sparse setae on posterior margin (Fig. 4); elytral punctures moderately impressed, surface shiny (Fig. 3); pygidium only slightly convex in ♂ (Fig. 5), very sparsely setose across base (Fig. 8); vestiture orange-yellow (Fig. 4); head as in Fig. 7; genitalia as in Figs. 9–10; body 12.9–18.3 mm long; south-central subcoastal area from Ravensthorpe to Salmon Gums, Western Australia (Fig. 56) ….................................... Epironastes abruptus Carne, 1957