Distinguishing Scaphinotus mannii Wickham (Coleoptera: Carabidae: Cychrini), a Species of Conservation Concern, from Similar Congeneric Species Author LaBonte, James R. 1570 Kenard Street N. W., Salem, Oregon 97304, U. S. A.; Author Kavanaugh, David H. Department of Entomology, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, California 94118, U. S. A.; Corresponding author: E-mail: dkavanaugh @ calacademy. org dkavanaugh@calacademy.org text Proceedings of the California Academy of Sciences 2022 2022-07-29 67 12 301 314 journal article 299164 10.5281/zenodo.11067099 86216775-2046-4815-aa0a-551ee95c60a5 0068-547X 11067099 Modified couplet 3 from Kavanaugh and Angel (2015) for distinguishing S. mannii from S. regularis and S. relictus 3a. Head longer and more slender, with eyes much less convex in dorsal view ( Fig. 4A ), labrum ( Fig. 5A ) with lateral lobes long and narrow, approximately twice as long as wide at the base; pronotum ( Fig. 6A ) narrow, widest at or near middle, with anterior angles little projected anteriorly beyond the median anterior margin and narrowly rounded; elytral striae ( Fig. 7A ) shallowly impressed and regular, with punctures in striae small and with most of them separated from each other by at least several times their own diameter.................................................................... Scaphinotus mannii Wickham 3b. Head shorter and broader, with eyes much more convex in dorsal view ( Figs. 4 B-C), labrum ( Figs. 5 B-C) with lateral lobes shorter and broader, no more than about 1.5 times as long as wide at the base; pronotum ( Figs. 6 B-C) broad, widest distinctly anterior to middle, with anterior angles slightly to distinctly projected anteriorly beyond the median anterior margin and broadly rounded; elytral striae ( Figs. 7 B-C) deeply or very deeply impressed and regular or irregular, with punctures in striae larger and closer together, more-or-less coalescent in some striae.................................................................... 4