12 INSECT ENEMIES OF THE BOLL WEEVIL. 



galplius has since been described as Urosigalphus anihonomi Crawford 

 (Crawford, 1907a). 



In 1906 Mr. Nathan Banks described a mite, Tyroglyphus treviceps, 

 collected at Victoria, Tex., from boll-weevil larvae (Banks, 1906). 



In 1907 the senior author of this bulletin added Hydnocera puhescens 

 LeConte as a predaceous enemy of the boU weevil (Pierce, 1907a, 1907b, 

 1907c). In the same year Dr. Hinds published two papers in which 

 the work of Solenopsis geminata Fab. (fig. 16, p. 70), variety xyloni 

 McCook, as a predator on the boU weevil was fully discussed, and 

 considerable statistical data on the parasitic control of the weevil 

 were presented (Hinds, 1907a, 1907b). Mr. Morgan published a 

 brief account of the predatory attack of a bug, Apiomerus spissipes 

 Ssij C^Iorgan, 1907). Mr. J. C. Crawford described as parasites of 

 the boll weevil Torymus anthonomi, Urosigalplius anthonomi, and 

 UrosigalpJius schwarzi (Crawford, 1907a). 



In 1908 the senior author of this report recorded Catolaccus antho- 

 nomi Ashmead as a boll-weevil parasite and Caihartus cassise Reiche 

 {gemeUatus Duval) as a predator (Pierce, 1908a, 1908b, 1908c, 1908d). 

 Mr. Crawford described Ceramhycohius cushmani and Catolaccus 

 Jiunteri as new parasites of the boll weevil (Crawford, 1908). During 

 the same year two new predaceous enemies of the boll weevil were 

 recorded from Louisiana, namely, Evarihrus sodalis LeConte and 

 Evarihrus sp. (Newell and Trehearne, 1908). Mr. Townsend, in a 

 paper on the muscoidean flies, recorded Ennyomma glohosa Townsend 

 as a parasite of the boll weevil (Townsend, 1908). During 1909 Mr. 

 Crawford described TetrasticTius Jiunteri as a parasite of the boll weevil 

 (Crawford, 1909b). 



SCOPE OF PRESENT REPORT. 



The present report is supplement ar}" to a former bulletin which 

 was based on investigations prior to 1907 (Pierce, 1908a). The 

 matter contained herein has mainly been gathered during the years 

 1907, 1908, and 1909. Only such notes as are of value for the sake of 

 comparison have been repeated from the previous report. 



The work is divided into three parts : 



I. The status of the cotton boll weevil and its enemies. 



II. The biological complex. 



III. The economic application. 



PART I. THE STATUS OF THE COTTON BOLL WEEVIL AND ITS 



ENEMIES. 



Part I of this bulletin shows the large mass of statistical material 

 gathered during the four years of the parasite investigation, and 

 attempts to place this material in such form as to show its economic 

 value and significance. 



