INDEX. 
Page. 
Abutilon, food plant of Tetranychus bimaculatus 16 
Alfalfa, food plant of Tetranychus bimaculatus. 16 
Amaranthus blitoides, food plant of Tetranychus bimaculatus 16 
retroflexus, food plant of Tetranychus bimaculatus 16 
Aphanogmus varipes, enemy of red spider 19 
Apios apios, food plant of Tetranychus bimaculatus 16 
Arborvitse, food plant of Tetranychus bimaculatus 16 
Arctium lappa, food plant of Tetranychus bimaculatus 16 
Asparagus plumosus, food plant of Tetranychus bimaculatus 16 
Aster, food plant of Tetranychus bimaculatus 16 
Banding with tanglefoot against hop flea-beetle and red spider 28-29 
Bean, food plant of Tetranychus bimaculatus 16 
lima, food plant of Tetranychus bimaculatus 16 
protection from red-spider injury 35 
Beets, table and sugar, food plants of Tetranychus bimaculatus 16 
Birch, food plant of Tetranychus bimaculatus 16 
Blackberry, food plant of Tetranychus bimaculatus 16 
Bouvardia, food plant of Tetranychus bimaculatus 16 
Box-elder, protection from red-spider injury 35 
Burdock. (See Arctium lappa.) 
Burgmansia arbor ea, food plant of Tetranychus bimaculatus 16 
Burr clover. (See Medicago hispida.) 
Caladium, food plant of Tetranychus bimaculatus 16 
Calceolaria sp. , food plant of Tetranychus bimaculatus 16 
Calla, food plant of Tetranychus bimaculatus 16 
Canary bird vine. (See Tropseolum peregrinum.) 
Cantaloupe, food plant of Tetranychus bimaculatus 16 
Carnation, food plant of Tetranychus bimaculatus 16 
Carnations, protection from red-spider injury 35 
Castor-oil bean, food plant of Tetranychus bimaculatus 16 
Cecidomyia coccidarum, enemy of red spider 19 
Cedar, food plant of Tetranychus bimaculatus 16 
Celery, food plant of Tetranychus bimaculatus 16 
Chayote. (See Sechium edule.) 
Cheese weed. (See Malva parviflora.) 
Chrysanthemum, food plant of Tetranychus bimaculatus 16 
Chrysanthemums, protection from red-spider injury 35 
Chrysopa californica, enemy of red spider 19 
rufilabris, enemy of red spider 19 
Clean culture against red spider on hops 34 
Clematis, food plant of Tetranychus bimaculatus 16 
Clover, burr. (See Medicago hispida.) 
food plant of Tetranychus bimaculatus 16 
37 
