A NEW WEBWORM ENEMY OF CRUCIFEROUS PLANTS. 51 



The wild cucumber, Echinocystis lobata, is also a favorite with this 

 beetle and it would be worth trying as a trap crop. 



THE WESTERN STRIPED CUCUMBER BEETLE. 



Two of our correspondents write concerning what they designate as 

 the striped cucumber beetle and by which they probably mean Diabro- 

 tica trivittata Mann., a S}3ecies or subspecies which replaces vittata, 

 which it very closely resembles, on the Pacific coast. 



Mr. K. W. Motheral states that this species occurs at Hanford, Cal., 

 but not in sufficient numbers to do any great amount of damage. He 

 noticed particularly its occurrence upon ripe apricots. 



Mr. E. J. Wickson, Berkeley, Cal., writing under date of May 19, 

 1898, states that this species is abundant in California on all cucurbits, 

 associated with D. soror, which may be considered to be merely a geo- 

 graphical or racial variety of D. 12-panctata. The latter, as is well 

 known, does great injury to fruit blossoms and to ripe fruits, but in 

 this it is not, according to our correspondent, followed by vittata. The 

 same is true of the destruction of the petals of many garden flowers. 



A NEW WEBWORM ENEMY OE CABBAGE AND OTHER CRUCIF- 

 EROUS PLANTS. 



The farmer and market gardener who grow cabbages, turnips, horse- 

 radish, and other cruciferous crops, in the more Northern and Western 

 States may consider themselves fortunate in having only such species 

 as the cabbage louse, " cabbage worms," flea-beetles, and the diamond- 

 back moth to contend with. In the District of Columbia and nearby 

 localities in Maryland and Virginia the cultivation of these crops has 

 been in a most precarious condition for several years past, the most 

 injurious species here being the harlequin cabbage bug and the cab- 

 bage looper, Plusia brassicce. If the cabbages are not completely 

 stripped to the midrib and larger sideribs by the looper, as happened 

 during the season of 1898, they are almost certain to fall a prey to the 

 harlequin bug. Practically all- of the cruciferous pests of the north 

 also occur here, as well as farther south, and a host of other insects are 

 usually present in fields of cabbage, horse-radish and the like and 

 assist in the destruction of these crops. 



To add to this there is now the threatened danger of the introduc- 

 tion from the South of a new and pernicious cruciferous pest, the cater- 

 pillar of a small moth, which last season caused great injury in Georgia 

 in the vicinity of Augusta. 



INJURY BY THIS WEBWORM AT AUGUSTA, GA. 



Our first advice concerning injuries by this insect was received Sep- 

 tember 6, 1898, from Mr. W. 31. Scott, State entomologist of Georgia, 

 located at Atlanta. Specimens of the larvae and adults were received 

 in alcohol with the statement that the species was doing considerable 

 damage in the vicinity of Augusta, Oa., to cabbage, turnips, beets, etc. 



