<b 



42 THE CANADIAN ENTOMOLOGIST. 



Thorax with a denser line of gray pubescence each side, 

 black, coarsely punctured, pubescence thin, grayish 

 or (in Pacific Coast specimens) fulvous. .32- 



.36 in mxsta, Lee. 



Thoracic pubescence uniform. Black, densely clothed 

 throughout with cinereous pubescence, less coarsely 



punctured. .44-. 48 in concoler, Lee. 



Some of the recorded food plants of the species of Saperda are as 

 follows : ^V. obliqua has been found in the adult state on black alder ; 

 S. calcarata breeds in various poplars and in basswood ; S. ca?idida in 

 apple, crab apple, mountain ash, juneberry and hawthorn ; S. puncticollis 

 in poison ivy ; S. lateralis in hickory, elm and witch-hazel ; S. tridentata 

 chiefly in elm, also in maple ; S. cretata and S. fayi in thorn (Cratce- 

 ^^iis); S. vestita in basswood; S. discoidea in hickory and butternut; 6". 

 7n«sia in poplars ; and 6". concolor in poplars and willows. 



EuPOGONius, Lee. 

 Three species are known from Canada. They may be known thus : 

 A. Elytra black, punctuation coarse quite to apex. Thorax black, with 

 a broad line of yellow pubescence near each lateral margin. 



.28 — .32 in siibarmatus, Lee. 



AA. Elytra piceous or castaneous, punctuation finer or even obliterated 

 towards apex ; Elytra castaneous, punctuation finer, almost oblit- 

 erated at tip ; pubescence grayish or yellowish, forming reticula- 

 tions. .28 — .32 in tomeiitosus, Hald. 



Elytra piceous, punctuation stronger, pubescence luteous, forming 



small mottlings or patches. .24 — .36 in vestitus, Say. 



Of these, E. subarmatus bores in elm, E. tomeiitosus in pine and 

 hickory, E. vestitus in hickory. 



HoPLOsiA, Muls. 

 Represented by H. nubila, Lee, which is described by the author as 

 being .35 in. long, blackish piceous, polished, irregularly clothed with 

 short, dense cinereous pubescence, thorax with acute lateral spine, 

 elytra with large, closely placed punctures anteriorly, tip rounded. It 

 lives on basswood. 



POGONOCHERUS, Latr. 

 Two small blackish species belong here. They are variegated with 

 whitish or grayish pubescence, and the elytra are truncate, more or less 

 dentate at tip. P. pe?iicillatus, Lee, is .24 in. long, blackish ; elytra with 



