26 BULLETIN 689, U. S. DEPARTMEISTT OF AGEICULTTJEE. 



In the insectary the minimum period necessary for the incuba- 

 tion of the eggs was 5 days. For the five nymphal stages the mini- 

 mum periods were 3, 4, 5, 6, and 7 days, respectively, a total of 

 30 days for the egg and nymphal stages. The temperatures to which 

 the eggs and nymphs were exposed apparently had a bearing on the 

 length of the period of any stage. Development was more rapid 

 during the summer than during the fall. 



Eggs have been found in the field at Baton Rouge as early as 

 April 13 and as late as November 8. It is probable that in this 

 latitude four generations may develop in a year. Adults are found 

 hibernating during the winter months, but they also occur on plants 

 in the field during mild periods of weather during this season. 



Four enemies have been observed, the tachinid fly TricJiopoda 

 pennipes Fab. apparently being the most important. 



As a method of control the collection and destruction of eggs, 

 nymphs, and adults is recommended where valuable vegetable 

 crops are attacked. Adults congregate on turnip and mustard 

 during the fall and a few of these plants, or others on which 

 they congregate, might be grown as trap crops in sections^ where 

 serious injury by the species occurs. The adults may be collected 

 from these plants and destroyed. 



LITERATURE CITED. 



(1) LiNNE, Carl von. 



1758. Systema Katurae, ed. 10, rev., v. 1. 824 p. Holmiae. 



Page 444: Short original description of species as Cimex viridulus , in 'LaXin. "Habitat 

 iwlndiis." 



(2) [Riley, Charles V., and Howard, Leland O.] 



1889. Special notes. In U. S. Dept. Agr. Div. Ent. Insect Life, v. 2, no. 3, p. 61. 

 Review of "Notes on Indian insect pests," which forms Number 1 of Volume I of 

 "Indian Museum Notes." First part toy E. T. Atkinson makes mention of occurrence 

 on potato halms. 



(3) [Riley, Charles V., and Howard, Leland O.] 



1893. Extracts from correspondence. The sweet-potato root- weevil. InV. S. 

 Dept. Agr. Div. Ent. Insect Life, v. 5, no. 4, p. 261. 



Sent to Washington with larvas of Cylas formicarms wjth letter from correspondent 

 in Plaquemines Parish, La., dated Decemtoer 22, 1892. 



(4) [Riley, Charles V., and Howard, Leland O.] 



1893. Extracts from correspondence. Plant-bugs injuring oranges in Florida. 

 In U. S. Dept. Agr. Div. Ent. Insect Life, v. 5, no. 4, p. 264, 265. 



Sent in by correspondent from Altoona, ria.,with letter dated December 7, 1892. 

 Puncturing rind of nearly ripe or ripe oranges on tree. 



(5) Van Duzee, Edward P. 



1904. Annotated list of the Pentatomidae recorded from America north of 

 Mexico, with descriptions of some new species. In Trans. Amer. Ent. 

 Soc, V. 30, p. 1-80. 



Given in table of species of Nezara (p. 57, 58). Statement that Dr. Uhler said that 

 species inhabited littoral plains of United States from Virginia to Florida and Louisiana. 



(6) Banks, Nathan. 



1910. Catalogue of the Nearctic Hemiptera-Heteroptera. American Ento- 

 mological Society, Philadelphia. 103-|- viii p. 

 Page 88: Synonymy. Distribution given as Southern States. . 



