Published online by Cambridge University Press: 31 May 2012
1 —A dark variety, quinquepunctatus Say, occurs in Florida, in which there are only five spots, those on the thorax, and in which the elytra are wholly black on the disk. It is an exceedingly variable species, no less that22 synonyms and 16 forms having been recognized (Champion, Biol. Centr. Amer., Coleop., Vol. IV, pl. 7, pp. 149–150, 1910)
2 —Riley, C. V. Third Missouri Report, p. 60, 1871.
3 —Report Comm. Agr. for 1881–82, p. 142
4 —Insect Life, Vol. 1, . 382, 1889.
5 —Bul. 22, n. s., Div. Ent., U. S. D. A., pp.104–105, 1900.
6 —Trans. Amer. Entom. Soc., Vol. XXIII, p. 220, 1896.