410 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 6 



Ball. As Fitch has said, however, the insects feed in a great variety 

 of situations, with apparently little preference. 



Occasional observations on this insect have been made by the writer 

 in Iowa, and some new things have been learned. For that reason 

 these notes are presented for publication, together with records of 

 other writers, bringing so far as possible the knowledge of this species 

 up to date. These notes are from the files of the entomological sec- 

 tion of the Iowa Agricultural Experiment station at Ames. 



Past History. This species was first described by Say (1825), 

 who gave it the name Tettigonia odolineata. Subsequently it was 

 placed in the genus Gypona. Fitch (1851) described Gypona flavi- 

 lineata, but Osborn and Ball (1897) consider that Fitch's species is only 

 a variety of odolineata Say. 



Distribution. Doctor Forbes has given as the distribution of 

 this insect: Eastern United States, Canada to Texas. Van Duzee 

 records the variety flavilineata collected by W. J. Palmer near Lake 

 Temagami, Ontario. Lugger mentions the species as occurring in 

 Minnesota and Uhler records it in Colorado. 



Food Plants. Any list of the food plants of this ubiquitous species 

 is necessarily incomplete, on account of its adaptability to so many 

 different plants. Fitch fisted the following: Dahfia, aster, oak, wal- 

 nut, beech, maple, birch, willow and dogwood. Other records are 

 blackberry (Lugger) and sugar beet (Forbes). Osborn and Ball found 

 that the insect "occurred upon the wild grasses of woodlands espe- 

 cially." In the insectary at Ames the nymphs and adults lived on 

 apple shoots readily. 



Life History. Generations. Osborn and Ball (1897) have shown 

 that there are in Iowa two generations of this insect. In 1909 in the 

 insectary two generations were observed, for second brood nymphs 

 were reared from eggs deposited by first brood adults. The insect 

 winters in the egg stage and the eggs are placed singly in small pouches 

 in the bark of apple and probably of other trees. 



Osborn and Ball said that the first brood nymphs (half to full grown) 

 were abundant in Iowa from mid-June to mid-July; the adults from 

 the first of July to the middle of August. The writer's records are 

 generally earlier than these dates. Practically all of the notes of the 

 writer refer to the first generation. 



According to Osborn and Ball the second brood larvae appear in 

 late August and September; the adults in September and October. 



The adults of the first generation are of the flavilineata type, while 

 those of the second are usually of the odolineata type, according to 

 the observations of Osborn and Ball. The adults (all first brood) 

 reared in the insectary by the writer, were all of the flavilineata type. 



