Pachybrachis (Coleoptera, Chrysomelidae, Cryptocephalinae) of Eastern Canada Author Barney, Robert J. Gus R. Douglass Land-Grant Institute, West Virginia State University, Institute, West Virginia, United States 25112 - 1000 rbarney@wvstateu.edu Author LeSage, Laurent Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, Neatby Building, Ottawa, Ontario, Canada K 1 A 0 C 6 Author Savard, Karine Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, Neatby Building, Ottawa, Ontario, Canada K 1 A 0 C 6 text ZooKeys 2013 2013-09-19 332 95 175 http://dx.doi.org/10.3897/zookeys.332.4753 journal article http://dx.doi.org/10.3897/zookeys.332.4753 1313-2970-332-95 9C1CE036FFBF8D66FF024F74FFB0FFCC 577540 Pachybrachis calcaratus Fall, 1915 Habitus 3 ; Map 3 ; Figures 5c , 7b Pachybrachys calcaratus Fall, 1915: 389 Recognition. Color dull yellow, with diffuse brown markings on pronotum, with more contrasting markings on elytra ( Habitus 3 ); ocular lines absent; front tibiae of male with subapical rectangular tooth on inner margin, due to abrupt narrowing of tibia, and with long stout curved terminal spur ( Figure 5c ); terminal spur of front tibia of female reduced to narrow spine; male size small: length 2.09 +/- 0.07 mm, width 1.106 +/- 0.04 mm. Distribution. Pachybrachis calcaratus has been found across the central portion of the United States but only in small numbers (Barney, unpublished data). Within the area of this study, it is restricted to the Carolinian Life Zone in southern Ontario ( Map 3 ). Material examined. ONTARIO: Essex Co., Roseland, 24.VI.1942, 'compared with type' , J. A. Wilcox [1♂, CDFA]; same data, except 24.VI.1944, S. D. Hicks [1♂, CNC]. Host plants. No information was recorded on the specimens collected in southern Ontario. Clark et al. (2004) reported Pachybrachis calcaratus nibbling purple loosestrife, Lythrum salicaria L. ( Lythraceae ), in Ohio. Comments. Pachybrachis calcaratus is another of Fall's (1915) Group C species that have "great variation in the degree of (elytral) maculation." The tibial spur ( Figure 5c ) is a defining character. Pachybrachis calcaratus was very likely associated with the Carolinian Life Zone in southern Ontario in the past. However, it has not been seen from there for the last 68 years.