TWO NEW AMERICAN ARADIDAE 
(HEMIPTERA-HETEROPTERA) 
By Nicholas A. Kormilev 1 
By the kind offices of Dr. John F. Lawrence, Museum of Com- 
parative Zoology, Cambridge, Mass., I have had the opportunity 
to study several lots of Aradidae, collected by him on bracket fungi 
( Basidiomycetes : Polyporaceae) in various parts of North America. 
Two of the species were found to be new, and are described below, 
in order to facilitate a study of fungus-feeding insects now being 
undertaken by Dr. Lawrence. In the measurements, 25 units — 
1 mm. 
Aradus oviventris, new species 
(Figs. 1 — 4) 
type data : Holotype, cf , Rustler Park, 8 mi. W Portal, Cochise 
Co., Arizona, VIII. 8. 1961, J. F. Lawrence, coll. (Lot No. 918), 
ex Fomes subroseus [— Forties cajanderi Karsten] on Pinus sp. ; de- 
posited in the American Museum of Natural History, New York. 
Paratypes, 6cf cf and 6$?, same data; in the Museum of Compara- 
tive Zoology (MCZ No. 3 1201) and the author’s collection. 
description : Male ovate, with rather broad abdomen ; female 
more narrowed posteriorly. Head (Fig. 1) slightly longer than its 
width through eyes ( cf 32.5:28, $ 33:30); anterior process stout, 
rather short, slightly widened in middle, reaching to basal 1/5 of 
antennal segment II; antenniferous spines short and stout, acute, 
and slightly divergent; lateral tooth minute, but distinct; eyes sub- 
globose. very prominent; preocular tubercles small, acute, the post- 
ocular blunt; vertex deeply and narrowly, semicircularly depressed, 
with two rows of rough granules in middle. Antennae (Fig. 2) less 
than twice as long as head ( cf 57:32.5, $ 57-5:33), and much nar- 
rower than fore femora; segment II subcylindrical, slightly widened 
in apical third, as long as head width including both eyes ( cf ) , or 
one eye (?) ; HI subcylindrical, slightly widened toward apex; IV 
elongate-ovate; proportions of antennal segments; cf 6:28:13:10, $ 
6.5:27:13:11; rostrum reaching to middle coxae, or, at most, to 
hind border of prosterum. Pronotum (Fig. 1) widest just behind 
middle, less than half as long as its maximum width ( cf 23 :53, ? 
^3 65 Lincoln PI., Apt. 2F, Brooklyn, New York 
Manuscript received by the editor March 15, 1966. 
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