Scaphinotus hoodooensis Kavanaugh and Angel, 2015

Kavanaugh, David H. & Angel, Kathleen W., 2015, A Taxonomic Review of the Northwestern Nearctic Subgenus Pseudonomaretus Roeschke 1907, including Description of the New Species Scaphinotus hoodooensis (Coleoptera: Carabidae: Cychrini) from the Bitterroot Mountains of Montana, Proceedings of the California Academy of Sciences 62 (14), pp. 381-396 : 384-385

Key to Species of Scaphinotus Subgenus Pseudonomaretus Roeschke

1a SBL 12.5 mm or less; elytra moderately shiny, with or without faint bronze or distinct metallic purple reflection......................................................... 2

1b SBL 13.0 mm or more; elytra dull or slightly shiny, without metallic reflection.......... 3

2a Head with a distinct transverse impression at level of posterior margin of eye clearly delineating frontal and occipital regions, antennomere 4 ( Fig. 3b ) as pubescent as antennomere 5 or nearly so; labrum ( Fig. 2b) with lateral lobes markedly long and narrow; male protarsomere 1 ( Fig. 5b ) with pad of adhesive setae ventrally on apical two-thirds only, protarsomere 4 also with a pad; elytra without or with only very faint bronze metallic reflection, without discal setiferous pores on intervals 4 and 8.................. Scaphinotus merkelii (G. H. Horn)

2b Head without or with only a very faint transverse impression at level of posterior margin of eye, frontal and occipital regions more or less continuous dorsally; antennomere 4 ( Fig. 3a ) not as pubescent as antennomere 5, with only a few scattered setae, mainly in apical half; labrum ( Fig. 2a) with lateral lobes moderate in length and width; male protarsomere 1 ( Fig. 4b ) with pad of adhesive setae ventrally over virtually entire ventral surface, protarsomere 4 without a pad; elytra (and also pronotum in some individuals) with distinct purple or bronze (in a few specimens) metallic reflection.... Scaphinotus hoodooensis Kavanaugh and Angel , sp. nov.

3a Labrum ( Fig. 2e) with lateral lobes markedly long and narrow; pronotum narrow, widest at or near middle, basolateral setiferous pores absent; median lobe of male genitalia as in Fig. 10.................................................. Scaphinotus mannii Wickham

3b Labrum ( Figs. 2c or 2d) with lateral lobes moderate in length and width; pronotum broad, widest distinctly anterior to middle, basolateral setiferous pores present; median lobe of male genitalia as in Figs. 11–12.................................................... 4

4a Elytra with 13 regular striae, uninterrupted on elytral disc, less regular laterally in a few individuals; male with armature of internal sac of median lobe of aedeagus as in Fig. 11...................................................... Scaphinotus regularis (LeConte)

4b Elytra with 13–16 apparent striae, with at least lateral striae disrupted by punctures in and between striae; male with armature of internal sac of median lobe of aedeagus as in Fig. 12.................................................. Scaphinotus relictus (LeConte)

Figures

FIGURE 3. Digital photographs of right antenna, antennomeres 1 to 5, of Scaphinotus (Pseudonomaretus) species, dorsal aspect, with antennomeres identified by number; a, S. hoodooensis Kavanaugh and Angel sp. nov. (near Hoodoo Pass, Mineral County, Montana); b, S. merkelii (G. Horn) (St. Joe National Forest, Idaho); c, S. regularis (LeConte) (Hayden Creek, Kootenai County, Washington); d, S. relictus (G. Horn) (Selway River at O’Hara Campground, Idaho County, Idaho); e, S. mannii Wickham (Steptoe Canyon, Whitman County, Washington). Scale lines = 1.0 mm.

FIGURES 4–7. Digital photographs of male left protarsus of Scaphinotus (Pseudonomaretus) species, with tarsomeres identified by number; a, dorsal aspect; b, ventral aspect; as = pad of adhesive setae. Fig. 4. S. hoodooensis Kavanaugh and Angel sp. nov. (near Hoodoo Pass, Mineral County, Montana). Fig. 5. S. merkelii (G. Horn) (9 km SE of Lowell, Idaho County, Idaho). Fig. 6. S. relictus (G. Horn) (Selway River at O’Hara Campground, Idaho County, Idaho). Fig. 7. S. mannii Wickham (Steptoe Canyon, Whitman County, Washington). Scale lines = 1.0 mm.