CORN INSECTS. 85 



Description: A mottled grayish weevil with short, blunt snout. Larva hairy. 



Distribution: Cosmopolitan. 

 Tucker, E. S. U. S. Dept. Agr., Bur. Entomology, Bui. 64, pt. 7, 1909, pp. 60-64, 



pi. 3, fig. 18. 

 Chittenden, F. H. U. S. Dept. Agr., Bur. Entomology, Bui. 8, n. s., 1897. 



Dichocrocls punctiferalis Gucn^e. 



(Pyralidse; Lepidoptera.) 



Hosts: Maize, peach, pawpaw, apple, orange, loquat, guava, cassia, custard apple, 

 granadilla, banana, millet, Canavalia indica, senna bean, Dahlia, castor bean, cacao, 

 sunflower. 



Injury: Although primarily a maize pest, it is becoming quite a serious enemy of 

 fruit trees in Cleveland District, Queensland. Breeds in pods of castor bean and 

 cacao, and heads of sunflower in India. 



Description and biology: Adult measures about 24 mm. in wing expanse; color pale 

 orange yellow, marked with numerous black dots on wings and body. Egg presum- 

 ably deposited on leaf stalk near or at point of junction with main stem or young fruit; 

 larva on hatching penetrates into the hollow stalk or fruit, and after feeding for a time 

 bores into the crown, in which it remains until ready to pupate. On leaving the 

 crown of the fruit it crawls to some convenient crevice and constructs a loose silken 

 web under which it transforms to a reddish brown pupa. 



Distribution: Australia, Japan, China, India, Burma, Ceylon. 

 Jarvis, E. Queensland Agricultural Journal, 1913, p. 33, July. 

 Maxwell-Lefroy, H. Mem. Dept. Agric. India, vol. ], 1907, p. 211. 



Siphonella pumilionis Bjerk. 



(Corn Fly. Oscinidae; Diptera.) 

 Host: Corn. 



Injury: Mines stem and young ears. 



Description and biology: Fly yellow, thorax with three broad black stripes, abdomen 

 with brown median line and four broad brown cross bands; beak very long and thin; 

 appendages yellow; length 3-4 mm. Larva 6-7 mm. long, shining yellowish white. 



Distribution: Europe. 

 SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, p. 411. 

 B. IMPORTANT CORN PESTS. 



HEMIPTERA. 

 Cercopidae. 



Tomaspis vaiin FabriciuE. T. postica Walker, T. lepidior Font.; South America. (Se»Sugar cane.) 



COLEOPTERA. 

 Elateridae. 



Agriotes lineatus Linnfpus. (See Tobaeco.) 



Chrysomelidae. 



Diabrotica graminea Ballnu; Porto Kico; adults very injurious to flowers. 



Brachyrhinidae. 



Biaprepes abbret'iatus Linna&m: West Indies. (See Sugar cane.) 



LEPIDOPTERA. 

 Noctuidse. 



Sesamia cretica Led.; Europe, Asia Minor, Egypt, Sudan; bores in ears. (See Sugar cane. ) 



Calamistis/usca Hampson; Soutli Africa; a serious pest. 



Cirphis kucostichaHaxapson; East Africa; cobworm. 



Pyralidae. 



Pt/rausta nubilalis Huhtier; Europe; bores in stalks. (See Grains.) 

 Chilo simplex Butler; India, Formosa. (See Sugar cane.) 

 Chilo auricilia Dudgeon; India. (See Rice.) 



Hepialidae. 



HepialushuinuliUnniGus; Europe. (See Hops.) . 



