BEET INSECTS. 



43 



B. OTHER IMPORTANT BEET INSECTS. 



ACARINA. 

 Tetranychldae. 



Tetranychus tclarius Lirmseus, the red spider; Europe; very injurious to sugar-beet foliage. 



HEMIPTERA. 

 Aphididse. 



Aphis Tumicis'Linii.s&ns; Europe; sugar-beet foliage. 



ORTHOPTERA. 

 Gryllotalpidae. 



:^Gryllotalpa gryllotalpa Linnaeus {vulgaris Latreille); Europe, introduced into New Jersey; injures 

 roots. 

 Gryllidae. 



Gryllus rnelas Charp.; Europe; seriously injures tlie roots. 



COLEOPTERA. 

 SUphidae. 



■^Blitophaga opaca Linnaeus; Europe, North America; feeds as larva on foliage of beets, au imusual 

 habit for this family. It is harmless in America at present. 

 B litophaga undata MiWer; Silpha obscura Linnajus; and Phosphuga atrata Uimievis; Europe; larvae 

 feed on foliage of beets. 



Fig. 26. — The Hawaiian beet webvvorm {Hymenia fascialis): Female moth. Enlarged. (Marsh.) 



Tenebrionidae. 



Perfmus /f77!OTOHs Liimseus, and Gonocephalum {Opatrum) sabulosuvi Linnaeus; Hungary; larvae in- 

 jurious to roots of sugar beet; adults injure the foliage. 



Coccinellidae. 



Subcoccinclla S4-punctata Linnaeus; Europe; larvae and adults injure vegetation. 



Elateridae. 



Lacon murinus Linnaeus and Corymbites aeneus Linnaeus, wireworms; Europe; attack the roots of 



seedlings. 

 Athous niger Linnaeus. (See Tobacco.) 

 Agriolcs lineatus Linnfeus. (See Tobacco.) 



Meloidae. 



Epicauta rufidorsum Goeze, bUster beetle; Europe; defoUates and sometimes destroys entire plants. 



Scarabseidse. 



Melolontha vulgaris Linnaeus, June beetle, Europe; larvae feed at roots. 



Rhizotrogus xiuinoctialis Herbst; Europe; the larvae feed at the crown and roots killing many plants. 



