TRANSACTIONS 
OF THE 
AMERICAN ENTOMOLOGICAL SOCIETY 
VOLUME XLVII 
ESSAY ON THE AMERICAN SPECIES OF ARADUS 
(HEMIPTERA) 
BY II. M. PARSHLEY 
Smith College 
Every entoinoloi>:ist is in a seneral way familiar with the “flat- 
hugs” of the Hemipterous genus Anuliis, which are often met with. 
l)eneath the dead liark of trees, ])ut no systematic treatment 
of the numerous New World species has ever been attempted 
and they have remained for the most part indeterminable by 
the majority of students. Bergroth, “le grand inaitre des Arad- 
ides,” published in 1892 a list of the nineteen lioreal American 
species then known, with four doulitful species of Walker, giving 
indications of their distribution, and in other papers he has made 
various important contrilmtions to our knowledge, describing new 
forms with great clarity and elucidating the synonymy of the 
older species. Say, Stal, Uhler, Heidemann, Osborn, and others 
have given some attention to the group, mostly in the way of 
descriptions of supposedly new forms or notes on ethology, and 
Van Duzee, in his Catalogue of 1917, lists thirty-nine species 
in the genus, including three unrecognized species of Walker and 
Fyles. To Van Duzee w'e are further indebted for a very recent 
contrilmtion (1920) in which are made known some new forms 
from the west. The palaearctic representatives of the genus have 
been very fully treated by Kiritshenko (1913) in a most excellent 
TRANS. AM. ENT. SOC., XLVII. 
