Chalepus walshii (Crotch)

Eiseman, Charles S., 2014, New Host Records and Other Notes on North American Leaf-Mining Chrysomelidae (Coleoptera), The Coleopterists Bulletin 68 (3), pp. 351-359: 353

publication ID

http://doi.org/ 10.1649/072.068.0302

persistent identifier

http://treatment.plazi.org/id/FD4B87B6-3124-FFC2-FCCB-F98B0C60FE3D

treatment provided by

Valdenar

scientific name

Chalepus walshii (Crotch)
status

 

Chalepus walshii (Crotch)  

Apparently, the only documented larval hosts of this species are Elymus villosus Muhl. ex Willd.   and E. hystrix   L. ( Poaceae   ), with no notes on the larval habits (Ford and Cavey 1985). I have yet to find any leaf mines, but the conspicuous and distinctive feeding damage caused by the adults is worth mentioning. They scrape the leaf surface in regular, approximately 3-mm 2 patches, which soon turn whitish and give the leaf a checkered appearance ( Fig. 5). I have found the beetles feeding in this way on Elymus repens   (L.) Gould and Elymus virginicus   L. along the Maine coast and on Calamagrostis canadensis (Michx.) P. Beauv.   ( Poaceae   ) in both Maine and Massachusetts.