•78 



PLANT-BUGS INJURIOUS TO COTTON BOLLS. 



even when in the same fields parasitized specimens of other genera 

 are numerous. 



A Proctotrypid parasite, Trissolcus euscTiisti Ashm., has been 

 recorded as having been reared from the eggs of Euschistus servus in 

 Kansas. It has been stated in connection with the subject of egg 

 parasites of the conchuela that the important agent in checking the 

 multiphcation of that species, Telenomus ashmeadi Morrill, in the 

 laboratory does not hesitate to oviposit in the eggs of Euschistus 

 servus and that adult parasites have duly emerged in such cases. 

 This parasite is not at present known to occur in cotton-growing 

 sections where the brown cotton-bug is found . in abundance, but 

 doubtless other Proctotrypids have more or less influence on the rate 

 of multiplication of this bug. 



PENTATOMID BUGS OF THE GENUS NEZARA. 

 THE GREEN SOLDIER-BUG. 



{Nezara hilar is Say.) 



HISTORY. 



The frequent injuries by the green soldier-bug (PL I, fig. 3; text figs. 

 14, 15) to various crops and its wide distribution throughout the United 



States have resulted in its be- 

 ing one of the most generally 

 known plant-bugs. A good 

 general historical account of 

 the species has been given by 

 Sanderson in a previous bul- 

 letin of this Bureau.^ The 

 bug was first recognized as a 

 cotton pest in 1855, Townend 

 Glover ^ referring to its abun- 

 dance on cotton in Florida 

 and briefiy describing the na- 

 ture of its injury, evidently 

 misidentifying it specifically. 

 It was figured in 1878 by the 

 same author^ with insects 

 injurious to cotton under the name Nezara pennsylvanicus. This 

 error in identification has been indicated by Comstock.^ A corre- 

 spondent of the Division of Entomology^ reported damage to cotton in 

 Florida in 1890 by the green soldier-bug, and Sanderson (1. c.) briefly 

 mentions damage to cotton in Texas from this insect in 1903 and 1904. 



a Bui. 57, Bur. Ent., U. S. Dept. Agr., pp. 47-49, 1906. 



b Agricultural Report for 1855, p. 93. 



c Manuscript Notes from My Journal, etc., pi. 16. 



d Report on Cotton Insects, 1879, p. 167. 



« Insect Life, Vol. Ill, p. 403, 1891. 



Fig. 14. — The green soldier-bug (iVezar a Jiilaris) :Njmph, 

 first instar. Enlarged 21 diameters. (Original.) 



