HYLASTES TRIFOLII. CLOVER-ROOT BORER. 375 



It is more than probable that others of the butterflies, es- 

 pecially of the genera Colias, Melitaea and Lycaena, will be found 

 iipon further investigation to feed upon our clover ; while it is 

 not at all probable that the fourteen species of beetles named in 

 the list comprises all the enemies of the clover belonging to that 

 order. There is but little doubt that the list will be doubled. Of 

 the Orthoptera (Locusts) but five are named, and they all of the 

 genus Caloptenus. It is quite certain that all of our many 

 species of that genus, and nearly all others, may be justly in- 

 cluded in the list. Only one unnamed species of Thrips is men- 

 tioned. The past season I have found three species, one black, 

 one light yellow, and one bright red, all to be very abundant on 

 the clover blossoms, yet I could not see that they were greatly 

 injurious. 



Many of the insects named in the above list feed more gen- 

 erally on other plants. Mamestra picta prefers the cabbage, 

 Heliothis armiger feeds on the corn and cotton, Leucania uni- 

 puncta — the army worm — on oats and the grasses, so that for 

 the most part they are not serious enemies to our most valuable 

 forage plant. One of the insects named in the list, Asopia cos- 

 talis, feeds on the dry clover, either in the stack or mow, where 

 it often does very great injury. 



As our space will not permit a detailed description of all of 

 the above only those Avhose mischief is so considerable as to cre- 

 ate concern for the future of one of our most valued farm crops 

 will be described. These work on the roots, foliage, and seed, 

 and will be described in that order. 



Hylastes trifolii. Clover-root Borer. 



Order CoJeopiera. Familij Scolytidce. 



MiiUer, Mem. Soc. Dep. Mt. Tonerre I., pp. 47-64, 1807. 



Scluuitt, Stett Ent. Zeit. V., pp. 889-397, 1844. 



Lintner, Ann. Rep. N. Y. St. Agr. Soc, 1879. pp. 41-42, 111. 



Lintner. Rep. N. Y. Ag. Soc, 1882, p. 193, 111. 



Riley, Ann. Rep. Comm. Agr. 1878, pp. 248-250, 111. 



Riley, Am. Entomol., Vol. III., p. 180, 1880, 111. 



Saunders, Ont. En. Rep., Vol. XII., p. 43. 1881, 111. 



