Epuraea (Orthopeplus)

Cline, Andrew R. & Carlton, Christopher E., 2004, Two New Species of Epuraea (Orthopeplus) (Coleoptera: Nitidulidae) from Mexico, The Coleopterists Bulletin 58 (2), pp. 261-270 : 262

Key to Species of Epuraea (Orthopeplus)

1 Explanate lateral margin of pronotum, becoming obsolete towards base (Fig. 15); head depression extending to lateral margin of head behind eye ( Fig. 3 ); pygidium with basal margin convex (Fig. 18); prosternal process in lateral aspect with posterior face moderately produced terminally (Fig. 12) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - E. (O.) plenasulca Cline new species (Southern Mexico)

1a Lateral margin of pronotum explanate to base (Figs. 13–14); head depression not extending to margin of head ( Figs. 1–2 ); pygidium with basal margin concave (Figs. 16–17); prosternal process in lateral aspect with posterior face straight (Figs. 10–11) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2

2a Anterior margin of pronotum with moderate depression, not extending more than one-eighth the length of the pronotum (Fig. 14); depression on head with medial connection at same level as eye ( Fig. 2 ); pygidium with several long setae along distal-laterad margin and 2 rows of longer setae near apex (Fig. 17); labial palpi with terminal segment obtuse, broadly rounded (Fig. 5) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - E. (O.) setosa Cline new species (Central Mexico)

2b Anterior margin of pronotum with deep impression, extending to one-fourth the length of the pronotum (Fig. 13); depression on head with connection anterior to eye margin ( Fig. 1 ); pygidium with no long setae along distal-laterad margin and only 1 row of longer setae near apex (Fig. 16); labial palpi with terminal segment sub-quadrate (Fig. 4) - - - - - - - - - - - - - - - - E. (O.) quadricollis (Horn) (SW United States)

Figures

Figs. 1–3. Dorsal aspect of head. 1) Epuraea (O.) quadricollis; 2) E. (O.) setosa; 3) E. (O.) plenasulca. Figs. 4–6. Labial palpus. 4) Epuraea (O.) quadricollis; 5) E. (O.) setosa; 6) E. (O.) plenasulca. Figs. 7–9. Maxillary palpus. 7) Epuraea (O.) quadricollis; 8) E. (O.) setosa; 9) E. (O.) plenasulca. Figs. 10–12. Prosternal process, lateral view. 10) Epuraea (O.) quadricollis; 11) E. (O.) setosa; 12) E. (O.) plenasulca. Figs. 13–15. Pronotum. 13) Epuraea (O.) quadricollis; 14) E. (O.) setosa; 15) E. (O.) plenasulca. Figs. 16–18. Pygidium. 16) Epuraea (O.) quadricollis; 17) E. (O.) setosa; 18) E. (O.) plenasulca. Scale bars ¼ 0.25 mm for Figures 1–3, 0.1 mm for Figures 4–9, 0.4 mm for Figures 13–15, and 0.3 mm for Figures 16–18.