Epironastes, Carne, 1957

Hutchinson, Paul M. & Allsopp, Peter G., 2020, Revision of Epironastes Carne, 1957 (Coleoptera: Scarabaeidae: Dynastinae Pentodontini: Pseudoryctina) with description of the female, behaviours, and habitats, Zootaxa 4852 (4), pp. 428-448 : 447

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

Figures

FIGURE 56. Known distribution of Epironastes species in southern Western Australia.

FIGURES 21–28. Epironastes demarzi (Endrődi 1971), male specimen #1713. 21, dorsum; 22, venter; 23, lateral; 24, head, lateral; 25, head, dorsal; 26, pygidium; 27, parameres; 28, aedeagus, lateral.

FIGURES 43–50. Epironastes nigrisetosus Carne, 1957, male, Dempster Inlet specimen. 43, dorsum; 44, venter; 45, lateral; 46, head, lateral; 47, head, dorsal; 48, pygidium; 49, parameres; 50, aedeagus, lateral.

FIGURES 3–10. Epironastes abruptus Carne, 1957, male specimen #0465. 3, dorsum; 4, venter; 5, lateral; 6, head, lateral; 7, head, dorsal; 8, pygidium; 9, parameres; 10, aedeagus, lateral.

FIGURES 32–39. Epironastes limbatus Carne, 1957, male specimen #1703; 32, dorsum; 33, venter; 34, lateral; 35, head, lateral; 36, head, dorsal; 37, pygidium; 38, parameres; 39, aedeagus, lateral.