490 



COLEOPTERA. 



whole bod}^, while the el3'tra are furrowed and do not quite 

 cover the tip of the abdomen. C. palmarum Linn, is a large 

 black weevil, which lives in the trunks of palms. The Grain 

 Weevil, Sitopliilus granarius Linn. (Fig. 467; e, and natural 

 size), is pitchy red in color, the surface rough; 

 it is about an eighth of an inch long, and is im- 

 mensely prolific. Tliis great pest, both as a 

 larva and beetle, consumes wheat after it is stored 

 up, l)eing very abundant in granaries. Tlie larva 

 devours the inside of the hull, leaving the shell 

 Fig. i68. whole, so that its presence is not readily de- 

 tected. To prevent its attacks Harris recommends that the 

 wheat be kept cool, well ventilated, and frequently stirred. 



A similar weevil, Sitophilus oryzm Linn. (Fig. 467 ; c, a, 

 larva; J, pupa), attacks the grains of rice and also of wheat ; it 

 differs in having two lai-ge red spots on each elytron, and it is 

 abundant in the South, where it is called the "black weevil." 

 The European turnip weevil, Ceutorhynclius assimilis Paj'k.,. 

 a broad, pale gray insect, has occurred in JNIaine on the radish. 

 The Grape Curculio, Coeliodes incequalis Sa^^ (Fig. 468 ; 469 ; 

 a, grape disfigured by the larva ; b, larva), has latel}', according 



to "Walsh, been very destructive to 

 grapes, stinging the fruit and thus 

 destroying whole bunches of them. 

 The presence of the larva in the 

 grape may be known by a discolora- 

 tion on one side of the berry as if 

 prematurely ripening, though it be 

 the last of June or early in July. Late 

 in July or early in August the grub may be found fully grown, 

 when it drops to the ground and descending a little beneath 

 the surface transforms, and the beetle appears early in Sep- 

 tember. It is grayish black, the elytra black freckled with 

 gray spots, and striated, with large punctures. The legs are 

 dull brick red ; the femora are unarmed, while the four anterior 

 tibiae have a large rectangular tooth near the base. It is from 

 .09 to .11 of an inch in length. As a preventative against 

 their attacks, the vines should be thoroughly shaken each day 

 in June. 



