ATHYSANUS OBTUTUS VAN D. 93 
into July, disappearing before the end of the month, and appearing 
again toward the end of August and through September. There is 
nothing to be added in regard to the treatment for this species in 
addition to what can be recommended for the other species. Atten- 
tion to the grasses in which it primarily breeds is evidently the most 
important consideration so far as present knowledge serves to indicate 
measures of control. 
ATHYSANUS OBTUTUS Van D. 
Athysanus obtutus Van D. (fig. 24) is another species with a very 
wide range, especially to the south and southwest, being known to 
} 
Fic. 24.—A thysanus obitutus: a, Adult from beneath; b, from side; c, dorsal view; d, female genitalia; e 
male genitalia; f, nymph; g, eggs; h, egg, more enlarged; 7, eggs in grass stem, natural size. All but 
ienlarged. (After Osborn and Ball.) 
occur all the way from Iowa to Central America, and from Wash- 
ington, D. C., into South Carolina, Georgia, and other Gulf States. 
The adults are very similar to bicolor in size and form, but differ 
distinctly in color, whichisa pronounced chocolate-brown. The vertex 
is lemon-yellow, with two large brown spots just before the middle, 
and two small oblique dashes near the base darker. The apical cells of 
the elytra are nearly transparent, but the apical veins are distinctly 
blackish. The last ventral segment of the female is about the same 
length as the preceding segment, nearly straight or slightly con- 
caveonthe hind border. The male valve is triangular; the apex is 
