CABBAGE INSECTS 



95 



Spring these hatch into the stem-mothers that live 

 on the tender sprouts from the cabbage stumps; 

 there is generation after generation of the winged 

 and wingless aphids during the season until the 

 sexes are produced again in the fall ; this aphid has 

 many parasitic and predaceous enemies. 



Control — Destroy cabbage stumps and all refuse 

 in the fail; spray plants with whale-oil soap or 

 nicotine sulphate, three-fourths of a pint to lOO 

 gallons of water with 4 pounds of soap added. 



The cabbage looper (Autographa brassiccu) 

 Order — Lepidoptera 



A very injurious species on Long Island; it lacks 

 some of the abdominal legs and therefore loops 

 like a Geometrid; the white ribbed egg is deposited 

 on the leaves; the larva at first is dark green with 

 longitudinal white lines on sides of body; later it 

 becomes pale green and lines become fainter; the 

 pupa is in a thin white cocoon in fold of leaf on 

 underside; apparently 3-brooded on Long Island; 

 often injurious in greenhouses. 



Control — Same treatment as for other cabbage 

 caterpillars but the looper is harder to hold in 

 check ; cleaning up the fields in the fall is important 

 in order to destroy the pupae that pass the winter 

 among the refuse. 



The harlequin cabbage bug (Murganfia his- 

 trionic a) 

 Order — Hemiptera 



A very destructive Southern cabbage pest which 

 has gained a foothold on long Island and is work- 

 ing northward in Ohio ; has been found as far north 

 as Elmira, N. Y. ; it lays its barrel-shaped eggs on 

 leaves; they hatch in a few days and the nymphs 

 complete their growth in mid-summer in probably 



