178 



Insects mistaken for the boll weevil — Continued. Page. 

 Snowy tree cricket. See GEcanthus niveus. 

 Strawberry weevil. See Anthonomus signatus. 

 Striped Baris. See Baris striata. 

 Sunflower weevil. See Desmoids constrictus. 

 Tobacco stalk weevil. See Trichobaris mucorea. 

 Transverse Baris. See Baris transversa. 



Tribolium ferrugineum, attacks cotton seeds 67 



Trichobaris mucorea, attacks tobacco stalks 67 



Trichobaris texana, attacks stems of Spanish thistle 67 



Ty chius sordidus, attacks buckweed „ 67 



Waved sharpshooter. See Oncometopia undata. 

 White pine weevil. See Pissodes strobi. 

 Willow weevil. See Dorytomus mucidus. 

 Legislation. See under Control, artificial. 



Leaf area of cotton, increase in 58 



Leaf worm. See Alabama argillacea. 



Life cycle. See under Life history; Reproduction. 



Life history 30-48 



Adul t 39-48 



Before emergence from square 39 



Cannibalism occasionally noted when without food 48 



Changes after emergence, in color and hardness 40 



Color, variation in 42-43 



Description of adult, popular and technical 40-41 



Duration of life 44-48 



Bolls alone as food 46 



Foliage alone as food 46 



Squares alone as food 44-46 



Without food but with water 47 



Without food or water 47-48 



With sweetened water as food 47 



Emergence of adults from squares and bolls 39-40 



Egg, description of 31-34 



Deposited outside, eating of 33-34 



Deposited outside, hatching of 33 



Embryo, development observable 31-32 



Hatching, method 33 



Hatching, percentage of eggs , . 34 



Stage, duration of 32-33 



Food habits . . . .- 48-66 



Adult, female, for food and for oviposition 52 



Adult, male 51 



Choice, American or Egyptian squares 61-64 



Cotton-seed meal, is it attractive? 68-70 



Field tests prove non-attraction 69-70 



Laboratory tests indicate non-attraction 68-69 



Destruction of squares by feeding „ 59 



Feeding, destructive power by 61 



Feeding, effects upon squares and bolls 59-60 



Feeding of hibernated weevils on early cotton 52-56 



Food plant, has the weevil any other? 64-66 



Food plant, susceptibility of various cottons 61-64 



Larva, feeding; of 49 



