48 THE BEAN THRIPS. 
Page. 
Lotus americanus, food plant of bean thrips 31 
glaber, food plant of bean thrips 16, 31 
Mirabilis calif ornica, food plant of bean thrips 31 
Nasturtium. (See Tropxolum major.) 
Nematode parasite, enemy of bean thrips 42 
Nicotiana glauca, food plant of bean thrips 31 
Nicotine solutions, against bean thrips 16 
sulphate against bean thrips 16 
Oil. (See Distillate oil and Soap, "Whale-oil.) 
Orange, food plant of bean thrips 31 
Chrysomphalus aurantii 16 
medium in dispersion of bean thrips 15 
Parasite of bean thrips, artificial distribution 44 
Peach, food plant of bean thrips 16. 31 
Pea, food plant of bean thrips 14, 1 6, 28 
wild. (See Lotus americanus.) 
Pear, food plant of bean thrips 16. 1 7, 28 
Pine, food plant of bean thrips 16 
Polygonum aviculare, food plant of bean thrips 31 
Poplar, tulip, bean thrips found thereon 31 
Potato, food plant of bean thrips 28 
Radish, food plant of bean thrips 31 
Rains in control of bean thrips 40-41 
Soap, whale-oil, and blackleaf tobacco extract against Heliothrips rubrocinctus 
and bean thrips 44 
Sonchus oleraceus, food plant of bean thrips 31 
Sphserophoria sulphuripes, enemy of bean thrips 41-42 
Tacsonia mellissimus, food plant of bean thrips 31 
Thistle, sow. (See Sonchus oleraceus.) 
Thripoctenus russelli, artificial distribution 44 
parasite of bean thrips 16, 41, 42 
Thrips, bean, adult female, description 9 
habits 17-23 
male, description 10 
adults, recently described, description. 10 
bibliography 44-45 
control, artificial 42-44 
natural 40-42 
description 8-9 
distribution 14-16 
egg, description 10 
hatching 23-25 
stage, length at Compton, Cal 31-32 
in Imperial Valley 37-38 
enemies, natural 41-42 
feeding habits 20-21 
flight 21 
food piants 27-31 
generations, number, at Compton, Cal 37 
habits of adult 17-23 
larva 23-26 
prepupa and pupa 26-27 
hatching of eggs 23-25 
