zt IOWA STUDIES IN NATURAL HISTORY 
Amnestus pallidus Zimmer 
1910. Annectus (sic) pallidus Zimmer, Can. Ent., XLII, 166, fig. 10. 
1911. Ammnestus pallidus Zimmer, Univ. Neb. Contrib. Dept. Ent., no. 4, 25. 
1917. Ammnestus pallidus Parshley, Occ. papers Bost. Soc. Nat. Hist., VII, Fauna 
N; Eng 4, 46: 
Form of A. pusillus but more sparsely, coarsely punctate. General 
color pale yellowish brown. Head coarsely punctate, rounded in front, 
the tylus slightly longer than juga and with four heavy terminal teeth; 
juga each bearing five teeth. Antennae yellowish brown, second segment 
minute, third segment longest, four and fifth subequal. Pronotum with 
transverse impressed line distinct and closely, coarsely punctured; back 
of this line to the posterior submargin the punctures are sparse and 
coarse; anterior half of pronotal margins convex, the posterior half dis- 
tinctly coneave; disk of pronotum finely punctate; a submarginal row of 
small punctures along anterior edge. Scutellum coarsely, sparsely punc- 
tate, a transverse impressed line separating the basal impunctate portion 
from the rest; a submarginal impressed line in which the punctures are 
regularly and closely arranged. Hemelytra paler than pronotum, more 
sparsely punctate than in A. pusillus, the disk impunctate; corium deep- 
ly trisinuate at apex, the external angle surpassing the abdomen and more 
pointed than in A. pusillus. Venter reddish yellow, finely punctate and 
thickly covered with fine, yellowish decumbent hairs. Ostiolar canal about 
as in A. pusillus. Legs yellowish to yellowish brown, the anterior femora 
of the female with a large bifid tooth as in A. spinifrons; anterior tibiae 
moderately expanded, thickly haired and with five large teeth on outer 
side; all the tibiae more thickly haired than in A. pusillus. Length, 2.0- 
2.75 mm. Width across pronotum, 1.0-1.5 mm. 
In Zimmer’s original description (l. c.) this species is, pre- 
sumably through a typographical error placed in the genus 
““Annectus’’ but obviously this is a mistake since the form un- 
questionably falls in the genus Ammestus. In Zimmer’s later 
paper on the Pentatomidae of Nebraska (I. c.) the error is cor- 
rected. 
Amnestus pallidus is very similar to A. pusillus, the most 
obvious difference between the two forms being the presence of 
five teeth on each jugum in pallidus while in pusillus there are 
but four. 
Two specimens of this form which is here recorded from the 
state for the first time are at hand from Iowa City; both were 
taken in June. One specimen was swept from plantain-leaved 
everlasting (Antennaria plantaginifolia (li.) Rich.). Zimmer’s 
type was from Nebraska. Parshley (J. c.) has recently recorded 
