IOWA ACADEMY OP SCIENCES. 
181 
Larv 80 were found June 16th, small to half grown, continuing 
abundant until the middle of July. Adults appeared about the 
first of July, continuiDg till the middle of August. Second 
brood larvae occurred into the latter part of August, and on 
through September. Adults appeared in September and 
October. 
This is by far the most abundant species of the genus, and 
occurs throughout the entire region east of the Rocky moun- 
tains from Canada to Texas, at least, and is closely related to 
the South American lineata of Burmeister, if not identical 
with it. 
In common with other jassids which have a wide distribu- 
tion, it does not seem to be confined to any particular food plant, 
but may be found almost everywhere, preferring rank growths 
in shaded situations. It is the only representative of the retic- 
ulated elytral group occurring at Ames, and is unique in that 
it is two-brooded, while the other species are all apparently only 
single-brooded. 
GYPONA BIPUNCTULATA WOOD. 
Gyponabipunctulata, Woodworth, Bull. 111. State Lab. Nat. Hist., Ill, p. 30, 1887.( 9 ) 
Gypona nigra, Woodworth, Bull. 111. State Lab. Nat. Hist., Ill, p. 31, 1887. ( ^ ) 
This is the largest jassid known to occur on grasses in Iowa, 
and presents a very marked difference between the males and 
females. The females described as bipunctulata by Woodworth 
are bright green, stout, deep-bodied. The vertex is short, ocelli 
small, and there are distinct black dots on the pronotum, one 
each side about half way from the middle to the margin; also a 
distinct dot on the base of each elytron just under the outer 
angle of the pronotum. 
The male, which was described as Gypona nigra by Wood- 
worth, has the head and pronotum black, margined with light 
green. The black color nearly conceals the dots of female pro- 
notum. The elytra are hyaline and allow the black tergum to 
show through, so in most specimens there is usually a quite 
uniform dark color to the whole upper surface except the 
margin. The genital plates are broad, shorter than sixth seg- 
ment, truncate at apex. 
Woodworth described this species from Illinois, and we have 
specimens from Kansas aside from numerous examples taken 
in Iowa. 
The adults appear the middle of July, the males about a 
week before the females, and continue to the latter part of 
September. They have been taken only from grasses. 
