92 PLANT-BUGS INJURIOUS TO COTTON BOLLS. 



{Anasa tristis DeG.) by Doctor Ashmead in 1886. During the sum- 

 mer of that year it was found in Florida that about 30 per cent of the 

 eggs of Anasa tristis were parasitized by this insect. A closely 

 related Proctotrypid has been reared by Ashmead from the eggs of 

 AcantJiocepJiala (Metapodius) femorata Fab. 



A Tachinid fly, Trichopoda pennipes (fig. 22), has been reared from 

 Leptoglossus oppositus. Doctor Chittenden " states that eggs of this 

 fly were frequently noted, attached to the thorax of adults of this bug, 

 in the vicinity of Washington, D. C, in 1901. The fly has previously 



been reared from adults of the 

 squash-bug. It occurs in Texas, 

 Mississippi, Florida, and in prob- 

 ably all of the cotton-growing 

 States. It seems to be of little 

 consequence as a natural check to 

 the leaf-footed plant-bugs in 

 Texas, for among 58 specimens 

 of L. pliyllopus and 24 specimens 

 of L. oppositus in the collection 

 of the Bureau of Entomology at 

 the laboratory at Dallas, Tex., 



Fig. 22.-Trichovoda pennipes, a Tachinid para- Only a siuglc Specimen of the lat- 

 site of Coreid plant-bugs: Adult. Enlarged about 3 ter SpCCicS borC a Tachinid egg. 

 diameters. (From Chittenden.) rm • , i t i j ,i 



Ihis was attached to the upper 

 surface of the head of an adult male specimen collected by Mr. F. C. 

 Bishopp at Paris, Tex., on August 26, 1905. 



INSECTS OF THE LEAF-BUG FAMILY (CAPSIDiE) INJURIOUS TO 



COTTON. 



Thus far the only species of the family Capsidae which has proved 

 itself of importance as a cotton pest is the cotton leaf -bug {Calocoris 

 rapidus Say, fig. 23). This species was first mentioned in this con- 

 nection by Townend Glover ^ in 1856. It is widely distributed in 

 North America and is found in all the cotton-growing States. Prac- 

 tically all that is known concerning the life historj^ and habits of this 

 insect is presented by Sanderson^ in a report of observations made in 

 1904. Investigations thus far haA^e not revealed any practical 

 method of conibating the adult bugs, although destruction of nymphs 

 by a spray of kerosene emulsion may be advisable under some cir- 

 cumstances. The practicability of attracting the adults to light has 

 not been thoroughly tested. Hon. J. D. Mitchell, of Victoria, Tex., 

 captured 165 specimens by the use of 3 trap lanterns in a cotton 



a Bui. 33, Div. Ent., U. S. Dept. Agr., p. 25, 1902. 



& Agricultural Report for 1855, p. 87, PL VII, fig. 6, 1856. 



cBul. 57, Bur. Ent., U. S. Dept. Agr., pp. 44-46, 1906. 



