Pachybrachis obsoletus Suffrian, 1852

Barney, Robert J., 2022, Monitoring of Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae) Diversity and Abundance in Illinois for 140 Years: Recent Detections and Presumed Extirpations, The Coleopterists Bulletin 76 (4), pp. 489-496 : 494

Pachybrachis obsoletus Suffrian (RelatiVely Secure)

Pachybrachis obsoletus has been found at low levels in Illinois since the late 1880s ( Table 2). Barney (2018b) reported this species from New England to the 100 th meridian, usually on Salix species.