350 
IOWA ACADEMY OF SCIENCE 
SCOPE OF THE PENTATOMOIDEA IN NORTH AMERICA AND 
IN IOWA. 
Nathan Banks in his “Catalogue of the Nearctic Hemiptera- 
Heteroptera’’, (Am. Ent. Soc., 1910) lists 218 species in the 
group Pentatomoidea. The four families are represented by 
the following number of species : 
Pentatomidae 149 species 
Scutelleridae 25 species 
CydnidsB 28 species 
Thyreocoridae 16 species 
As the writer ^s collection now stands all but thirteen species 
of the fifty-one recorded from Iowa by Osborn are represented 
by Iowa specimens; of these thirteen recorded species, five are 
represented in the collection but these specimens are from nearby 
states and so can not be included in the list of Iowa species 
so far as this collection is concerned. Of the 218 species of 
Pentatomoidea recorded from North America, 113 species are 
now represented in the collection. 
In addition to Osbornes list of fifty-one species, six species have 
been added to the state faunal list during the past two summers. 
One of these is the Harlequin Cabbage Bug {Murgantia histri- 
onica Hahn) which is of great economic importance in the south 
but which seems to have reached its northern limits of distribu- 
tion, at least in this longitude. But two specimens of the species 
have been found and, although the search has been continued in 
various supposedly favorable localities in the state, other speci- 
mens have not come to light. 
Since most of the species still unrepresented in the collection 
have been recorded from the western part of the state it is likely 
that a summer’s collecting in that region will yield the greater 
number of these as well as, perhaps, some new records. G-eo- 
logical and fioral conditions in western Iowa begin to take on the 
characteristics of the Great Plains farther west so that this re- 
gion in Iowa should show a hemipterous fauna at least approach- 
ing that of the plains across the Missouri river. 
TIME AT WHICH THE WRITER’S WORK WAS BEGUN. 
During the spring of 1913 the writer began assembling speci- 
mens of the group Pentatomoidea as a working basis for future 
investigations on the subject. About fifteen species donated by 
Professor Wickham and a few other species which the writer 
