INSECT PESTS AND THEIR CONTROL 983 



1 — Eutettix tenella: a, adult; b, nymph; c, wing; d, e, genitalia; /, eggs, greatly 

 enlarged; g, section of beet stem, showing fresh eggs in place; h, same, showing eggs 

 ready to hatch; i, old egg-scars on beet stems; j, small leaf of sugar-beet, showing 

 characteristic "curly-leaf" condition; k, enlarged section of back of an extreme case of 

 "curly-leaf," showing "warty" condition of veins. 2 — Eutettix strobi: a, work of 

 nymphs on sugar-beets; b, leaf enlarged. 3 — Eutettix scitula: adult. 4 — Eutettix 

 clarivida: a, wing; b, head and pronotum; c, d, genitalia. 5 — Eutettix nigridorsum: 

 work of nymphs on leaf of Helianthus. 6 — Eutettix straminea: work of nymphs on 

 leaf of another Helianthus. 7 — Eutettix insana: wing. 8 — Eutettix stricta: a, b, 

 genitalia. 



Treatment. — Apply arsenicals until the cabbage head is half grown. 

 If spray is used, add resin fish-oil soap as a sticker. 



Harlequin Cabbage Bug (Murgantia histrionica). 1 



A — Adult. B — Egg mass. C — First stage of nymph. D — Second stage. 

 E— Third stage. F — Fourth stage. G— Fifth stage. All enlarged. 



The Cabbage Maggot (Pegomya brassicce, Bouche). — Soft white mag- 

 gots work in the roots of cabbage, turnip and cauliflower, eating away the 

 root hairs and scarring the surface of the larger roots. This maggot is the 

 larva of a two-winged fly which lays its eggs in the ground near the plants. 



Treatment. — Fit a disk of tarred paper about four inches in diameter 

 around the stem of each plant, letting it lie flat on the ground to keep the 



1 Bur. Ent. Cir. 103. 



