90 



PLANT-BUGS INJURIOUS TO COTTON BOLLS. 



Leptoglossus oppositijs Say. 



Leptoglossus opfositus (figs. 20, 21) is of somewhat less common 

 occurrence in cotton fields than L. pJiyllopus, but east of the Mis- 

 sissippi River and north of Florida it 

 ^v ^ apparently exceeds that species in gen- 



p S I a/ I eral abundance. It has been referred 



to by Dr. Chittenden as the '' northern 

 leaf -footed plant-bug." 



On September 21, 1905, in Menard 

 County, Tex., the writer found, on two 

 bolls which were situated close together 

 on a cotton plant, between 25 and 30 

 specimens of this species in the third 

 nymphal instar. Twenty specimens 

 were collected and brought to the lab- 

 oratory at Dallas. These molted be- 

 tween September 21 and 23. On Sep- 

 tember 29, 2 molted again although 3 

 specimens were still in the fourth stage 

 on October 3. One of those which 

 molted on September 29 became adult 

 on October 21; all others died before reaching maturity. 



Prof. H. Garman, entomologist of the Kentucky Agricultural 

 Experiment Station, records the finding of nymphs supposed to be 



Fig. 20.— The northern leaf-footed plant- 

 bug (Leptoglossus oppositus): a, Mature 

 bug; b, string of eggs; c, egg from end; 

 d, sculpture of egg; e, egg from side, 

 showing opening from which young has 

 escaped, a, b, c, e, Natural size; d, about 

 twice natural size. From Chittenden. 



Fig. 21. — The northern leaf-footed plant-bug: a, Nymph of first instar; b, second 

 Instar; c, third instar; d, fourth instar; e, fifth instar. Enlarged about 3 diameters. 

 From Chittenden. 



this species in large numbers on Spanish bayonet or '^bear grass" 

 ( Yucca filamentosa) at Lexington, Ky., July 7, 1899. With this excep- 

 tion information concerning wild food plants of this species is wanting 

 but with little doubt various weeds, including thistles and ''bear 

 grass," will be found to be included in the list. 



