INSECTS'ATTACKING CUCURBITACEOUS PLANTS. 805 



INSECTS ATTACKING CUCURBITACEOUS PLANTS 

 IN CONNECTICUT. 



Cucurbitaceous plants such as cucumbers, squashes, pumpkins 

 and melons, which are extensively grown in Connecticut, are 

 attacked and injured by a number of species of insects. For 

 several years we have been making observations on them, and the 

 present paper is for the purpose of giving in a few pages a fairly 

 comprehensive account of the principal insect pests of these 

 plants. 



For the hasty identification of such insects the following key 

 may be found useful : 



BORING IN THE ROOTS AND STEM — 



Small, slender larvae tunneling in the main 



root or stem below ground 



Striped Cucumber Beetle, Diabrotica viitata, p. 807. 

 Large, stout larvae boring in squash stems 



above ground 



Squash Borer, Melittia satyriniformis, p. 806. 



DEVOURING THE LEAVES 



Small (s-7 mm.) yellowish beetles feeding 

 upon the leaves. 

 Body yellow, marked with three longi- 

 tudinal black stripes 



Striped Cucumber Beetle, Diabrotica vittata, p. 807. 

 Body greenish yellow, marked with 



twelve black spots 



Southern Corn Root Worm, Diabrotica xii-pwnctata, p. 809. 

 Large (8-10 mm.) hemispherical beetle, 

 orange marked with black spots, or yellow 



larva with black spines 



Squash Lady-beetle, Epilachna borealis, p. 810. 



SUCKING SAP FROM THE UNDER SIDE OF THE LEATOS — 



Small dark green or brownish plant lice, 



often very abundant 



Melon Aphis, Aphis gossypii, p. 813. 

 Larger bright green plant lice usually not 



abundant 



Squash Aphis, Nectarophora cucurbitae, p. 814. 

 Gray bug with spicy odor (15 mm. when 



full-grown) 



Squash Bug, Anasa tristis, p. 811. 



