Sphaeroderus nitidicollis Guerin-Meneville , 1829

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 154

Sphaeroderus nitidicollis Guerin-Meneville, 1829

Sphaeroderus nitidicollis Guérin-Méneville, 1829: plate 7. Type locality: «Terre-Neuve» ( Guérin-Méneville 1844a: 24). Holotype [by monotypy] in UMO (Lindroth 1969a: 1108). Note. This name has been credited to Chevrolat by almost all authors. The validation of the specific name is by association with an illustration drawn by Guérin-Méneville and published in Guérin-Méneville’s Iconographie du Règne Animal under the name " Sphaeroderus nitidicollis Chevr." The nomenclature act was done by Guérin-Méneville and he is to be credited with the species name.

Sphaeroderus brevoorti LeConte, 1847: 443. Type locality: «Maine» (original citation). Syntype(s) in MCZ [# 617]. Synonymy established by Roeschke (1907a: 266).

Sphaeroderus granulosus Chaudoir, 1861b: 497. Type locality: "Terre Rupert, près de la baie d’Hudson» (original citation). Syntype(s) [2 ♂ originally cited] in MHNP. Synonymy established by LeConte (1866: 78).

Distribution.

This species ranges from Newfoundland (Lindroth 1955a: 23) to east-central Saskatchewan (Hooper 1978: 19), south to northeastern Minnesota (Gandhi et al. 2005: 923), northern Wisconsin along Lake Superior (Wickham 1896c: 131), the Adirondack Mountains in northeastern New York (Notman 1928: 208), and New England [see Lindroth 1963a: Fig. 68]. The record from southwestern Ohio (Dury 1906: 257) is probably in error. Roeschke (1907a: 268) statement that this species is found “Küstengebiet von Maine bis Washington D.C." is in error. Fossil remnants, dated between 22,200 and 25,200 years B.P., have been unearthed in central Illinois (Schwert 1992: 76).

Records.

CAN: MB, NB, NF, NS (CBI), ON, QC, SK USA: ME, MN, NH, NY, VT, WI

Note.

Lindroth (1961a: 29) retained brevoorti as "a weak subspecies, at most." I studied several specimens from Newfoundland, the Maritimes, and Quebec, including Anticosti Island, and found no structural differences between populations of the forms nitidicollis and brevoorti except for the fact that adults of the nitidicollis form are on average slightly larger than those of the brevoorti form.