SCUTELLEROIDEA OF IOWA 109 
ama and Brazil and throughout the United States. Osborn re- 
corded it as common in Iowa and our collection contains many 
specimens collected in practically every locality visited. 
By far the greatest number of our specimens have been 
taken in August. We have collected them at Hampton, lowa 
City and Robinson on hazel (Corylus americana Walt.) ; at 
Ames and other places in the state we have found them on wild 
black cherry (Prunus serotina (Linn.) Reichenb.) ; and at Iowa 
City, Grinnell, Homestead and Lake Okoboji the species has 
often been found on wild grape (Vitis sp.), growing along the 
edges of woods and in more or less shaded and moist situations. 
On August 24, we found nymphs of this form common on bass- 
wood trees (Tilia americana Linn.) near Eldora and I have in 
my collection both nymphs and eggs taken on basswood, August 
15. 
Among some of the other food plants recorded for A. hilare 
are, cotton, sweet orange, trumpet creeper (Z7ecoma radicans 
(Linn.) Juss.), cowpeas and tomatoes (Kirkaldy) and it has 
been taken. by Bueno on golden-rod. It is also reported to feed 
on the larvae of the cotton moth. 
Genus BANASA 8tal 
1860. Bawnasa Stal, Svensk. Vet. Handi., 2, no. 7, 24. 
This genus is Nearctic and Neotropical in its distribution and 
contains about twenty forms of which eight have been recorded 
from North America; three of these have been reported from 
Iowa. Although the genus is closely allied to the preceding and 
indeed, has been included in the old genus Nezara by some 
authors, the differentials separating the two are of as much con- 
sequence as those separating Acrosternum from Nezara and 
hence would seem to be valid. While these differences are more 
or less difficult to put into words, the general facies of the mem- 
bers of the genus Banasa is quite distinct from that of the 
_-members of the genus Acrosternum although not a great deal of 
actual structural difference prevails. 
Body more or less elongate ovate. Head weakly sinuate before the eyes, 
the apex rounded, the lobes equal in length. Basal segment of antennae 
searcely reaching apex of head; apical antennal segment twice as long as 
second. Rostrum reaching to postcoxae. Pronotum unarmed, humeri not 
produced. Mesosternum plain; metasternum a little elevated, emarginate 
posteriorly where it receives the short ventral spine. 
