Dicaelus dilatatus dilatatus Say, 1823

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 629

Dicaelus dilatatus dilatatus Say, 1823

Dicaelus dilatatus Say, 1823a: 68. Type locality: "Camp Hill[s] [Cumberland County], P[ennsylvani]a" (neotype label). Neotype (♂), designated by Lindroth and Freitag (1969: 343), in MCZ [# 33026]. Note. Say (1823a) did not indicate the area where his specimen(s) came from but later (Say 1825: [53]) noted that the species was "an inhabitant of Pennsylvania."

Dicaelus dejeanii Dejean, 1831: 687. Type locality: «Amérique septentrionale" (original citation), restricted to "coastal plain of Georgia" by Ball (1959: 126). Holotype [by monotypy] (♀) in MHNP (Lindroth 1955b: 17). Synonymy established by Brullé (1835c: 282).

Dicaelus planicollis LeConte, 1847: 427. Type locality: "Georgia ad montes" (original citation). Holotype [by monotypy] (♀) in MCZ [# 5709]. Synonymy established by Ball (1959: 130).

Dicaelus carolinensis Casey, 1913: 150. Type locality: "Southern Pines [Moore County], North Carolina" (original citation). Holotype [by monotypy] (♂) in USNM [# 47357]. Synonymy established by Ball (1959: 130).

Distribution.

This subspecies ranges from “Maine” (Larochelle and Larivière 1990a: 32) to west-central New York, south to northern Florida (Ball 1959: 131-132), west to eastern Texas (Sabine County, Brian Raber pers. comm. 2010).

Records.

USA: AL, CT, DC, DE, FL, GA, MA, MD, ME, MS, NC, NH, NJ, NY, PA, RI, SC, TX, VA, VT, WV

Note.

Ball (1959: 132) reported the presence of intergrade populations of this and the sinuatus forms in Mississippi, Alabama, northern Florida, Georgia, South Carolina, and North Carolina. For practical reasons, these populations are considered to belong to the nominotypical subspecies.