Scaphinotus (Pseudonomaretus) regularis (LeConte) 1884

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 : 393

Scaphinotus (Pseudonomaretus) regularis (LeConte) 1884

Figures 2c, 3c , 11

RECOGNITION.— Adults of this species can be distinguished from those of other species of Pseudonomaretus by the following combination of character states: SBL = 13.0 mm or more (males 14.0–16. 6 mm, females 14.9–21. 2 mm); elytra moderately shiny, microsculpture shallowly impressed, without metallic reflection; head with a distinct transverse impression at level of posterior margin of eyes clearly delineating frontal and occipital regions; labrum ( Fig. 2c) with lateral lobes moderate in length and width; antennomere 4 ( Fig. 3c ) not pubescent, with only a very few scattered setae in addition to apical whorl of setae; pronotum with basolateral pair of setiferous pores present; male protarsomere 1 (as in Fig. 6b ) with pad of adhesive setae ventrally over virtually entire ventral surface, protarsomere 4 without a pad; elytra with 13 regular striae, less regular laterally in a few individuals, elytral intervals 4 and 8 each with two to six discal setiferous pores; median lobe of male aedeagus ( Fig. 11) thick, thickest near midpoint of shaft, ventral margin evenly arcuate in basal three-fourths, distinctly deflected ventrally in apical one-fourth in lateral aspect ( Fig. 11b), widest near midpoint of shaft length, slightly deflected right, narrowed and parallel-side in apical one-fourth, angularly tapered to a flattened point apically in dorsal aspect ( Fig. 11a), armature of internal sac as in Fig. 11.

GEOGRAPHICAL DISTRIBUTION.— This species is known from southeastern British Columbia, northern and central Idaho and southeastern Washington ( Gidaspow 1973; Bergdahl 2014).

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.