80 IOWA STUDIES IN NATURAL HISTORY 
tate with sometimes a black point near the middle of each. Legs pale 
yellow with black points, the tibiae furnished with numerous, short, rather 
heavy and acute spines; tarsi pale clay yellow, the second segment small- 
est, the first largest; apices of tarsal segments and tarsal claws dusky. 
Length, 12.5-15.0 mm. Width across humeri, 7.0—9.0 mm. 
This form resembles somewhat the following species, E. eus- 
chistoides, but the apex of the head is not at all or at most only 
very slightly incised, the maculated margins of the abdomen 
project beyond the hemelytra, thus giving the insect a more 
robust appearance and the punctuation of the embolium is 
deeper and coarser. In addition, the sinuation at the sides of 
the head before the eyes is not so well marked as in L. euschis- 
toides. 
Euschistus servus seems to be more characteristic of our south- 
eastern states where it replaces the more northern form euschis- 
tovdes; the two forms are very closely allied and a tendency to 
intergradation seems to be manifest. 
While Osborn reported a single specimen of EH. servus from 
Iowa (Proc. Ia. Acad. Sci., I, Pt. II, 121, 1892), the record is 
not satisfactory ; it reads as follows, ‘‘One spec. Loe. ?’’. After 
a careful study of my material I find that I have but one Iowa 
specimen which I can with certainty attribute to this species; it 
is a female taken at Iowa City, October 1. The species has been 
reported as feeding on maize (Zea mays Linn.) and orange 
(Citrus aurantium Linn.) and it probably also feeds on various 
plants and grasses as do its congeners. 
Euschistus euschistoides (Vollenhoven) 
1868. Diceroeus euschistoides Vollenhoven, Verls. Ak. Amst. Nat. (2), II, 180. 
1871. Evuschistus fissilis Uhler, Proc. Bost. Soc. Nat. Hist., XIV, 96. 
1872. Euschistus fissilis Uhler, Report U. S. Geol. Surv., V, 396. 
1872. Euschistus fissilis Stal, Svensk. Vet. Handl., 10, no. 4, 26. 
1878. Huschistus fissilis Uhler, Proc. Bost. Soe. Nat. Hist., XTX, 374. 
1904. Euschistus fissilis Van Duzee, Trans. Am. Ent. Soc., XXX, 44. 
1909. Euschistus euschistoides Kirkaldy, Cat. Hem. (Heterop.), I, 64. 
General color of £. servus. Form narrower than that species, the abdo- 
men not extending beyond the sides of the hemelytra; body above dis- 
tinetly depressed, below markedly convex. Apex of head deeply incised 
but the lateral lobes do not meet in front; punctuation of the head a little 
coarser than in £. servus and the sinuation before the eyes more marked 
than in that form; a black line from eyes to base of antennae. Antennae 
reddish yellow, the apical three-fourths of the third segment and all but 
the very narrow base of the fourth segment fuscous to black; second seg- 
ment distinctly shorter than the third. Rostrum extending between posterior 
