46 CIRCULAR 16 8, U. S. DEPARTMENT OP AGRICULTURE 



List of field-crop insects — Continued 



Distribution 



Host plants 



hemiptera— continued 



Fulgoridae— Continued. 



Ricania taeniata Stal 



Stenocranus sacchari Mats 



Tropidocephala formosana Mats 



Tropidocephala saccharivoreUa Mats... 



Vekuntia nigrolineata Muir 



Vekuntia stigmata Mats 



Aphiidae: 



Aphis formosanus Takah 



Aphis maidis Fitch. 



Cerataphis saccharivora Mats 



Macrosiphum granarium Kirby 



Oregma lanigera Zebn 



Phorodon asacola Mats 



Rhopalosiphum avenae F 



Tetraneura sp 



Yamataphis oryzae Mats 



THYSANOPTERA 



Phloeothrips oryzae Mats 



Phloeothrips pablicornis Mats 



ISOPTERA 



Termitidae: 



Capritermes sulcatus Holmg 



Procapritermes mushae 0. and M 



Termes formosanus Shir 



Termes vulgaris Hav 



ORTHOPTERA 



Gryllidae: 



Brachytrypes portentosus Licht 



Gryllotalpa africana P. de B 



Acrididae: 



Atractomorpha bedeli Boliv 



Locusta migratoria danicus L 



Locusta migratoria migratoroides Reich 

 Oxya velox Fab 



Racilia okinawensis Mats 



r. f. c. 



F. 

 F. 

 F. 

 F. 

 F. 



J. F. 

 J. F. 



F. 



J. 

 F. C. 



J. 



J. 



F. 



J. 



F. 

 F. 



C. 0. 

 F. 



K, F. C. 

 J. K. F. C. O. 



J. K. F. C. O. 



J. K. F. C. 



F. 



J. K. F. C. 0. 



F. 0. 



Rice, sugarcane. 

 Sugarcane. 



Do. 



Do. 



Do. 



Do. 



Corn, sorghum. 



Corn, wheat. 



Sugarcane. 



Rice. 



Sugarcane. 



Hemp. 



Rice, barley, wheat, millet, corn. 



Sugarcane. 



Rice. 



Rice, wheat, barley, oats. 

 Sugarcane. 



Rice. 



Do. 

 Rice, sugarcane. 

 Sugarcane. 



Rice, sugarcane. 



Rice, wheat, sugarcane. 



Rice, barley, sugarcane. 



Rice, wheat, barley, millet, corn. 



Rice, wheat, sugarcane. 



Rice, wheat, barley, sugarcane, 



cotton. 

 Rice. 



RICE INSECTS 



Nearly 100 species of insects are recorded as attacking rice in 

 Japan, Taiwan, and Chosen, and of these about 10 may be consid- 

 ered as of major importance. Kuwayama (77) mentions 39 species 

 upon this plant in Hokkaido, 14 of which are common and injurious. 

 In most of the rice-growing sections of the Far East the two pyralid 

 moths Chilo simplex and Schoenohius incertellus are of the most 

 importance and are of general distribution. 



In Hokkaido G. simplex (9, 42, 43, SI, 119, 146, 149, 206, 209) 

 usually has one brood a year, though occasionally two, in which 

 case the adults of the first brood appear in late June and July and 

 those of the second in September and October. Hibernation is in 

 the mature larval stage in the stems left in the field after cutting. 

 These larvae feed in the spring upon grasses, weeds, etc. In this 

 island the eggs are laid upon the plants in the field rather than in 

 the seed bed, and are on the upper side of the leaf blade about 2 

 inches from the tip. The duration of the stage is about 20 days. 

 The egg cluster is without a covering of felted hairs. The egg, 

 larval, and pupal stages cover 14, 50, and 12 days, respectively. The 

 larvae live gregariously for a short time after hatching, but after 

 penetrating the stalk they remain therein. Pupation takes place 



