! 
117 
•i a ^ s llttle to °ur previous knowledge of the insect, except to 
>rt its occurrence in destructive numbers in the orchards of Cen- 
Iowa. 
/ • 
; was not mentioned in the numerous and voluminous reports of 
Fitch as State Entomologist of New York, nor in that of Prof. 
Jtner, his successor. Dr. Fitch gives, however, a detailed account 
mother species of the genus which occurs throughout the United 
tes, and seems to have become especially destructive in New 
k, duung the ^eai 1869. This is the Lygus linccitus , of Fabricius* 
pecies whose life history, habits, and injuries to vegetation, are 
•emely similar to those of the insect under consideration. This 
common enough in Illinois to attract the attention of Dr. Le Baron 
L870, and was briefly treated by him in his first report, under 
name of the “Four-striped plant-bug, Capsus (. Phytocoris ) quad- 
ttatus, Say.” 
a the State Deports of Illinois, as already said, our “tarnished 
at bug has received no attention, beyond incidental allusions 
le to it in the second of the series (pp. 62, 65 and 66.) 
! dult. (Plate XI, Fig. 1). This species, when mature, is about 
-fifth of an inch by half that in width, oval in general outline, and 
owish or greenish yellow in general color, more or less striped 
. mottled with dusky. 
'he head forms a nearly equilateral triangle, with obtuse angles, 
upper surface is shining and nearly smooth, sparsely pilose, and 
l two rows of rather coarse punctures on either side of the 
Idle line. The eyes are prominent, rounded, and red or black 
color. The head is yellow, with a median black stripe which 
3nds on to the nasus as a black or rufous patch. Each side of 
i median stripe is another, running nearly parallel with it, which 
however, often nearly obsolete. These stripes extend to the 
es of the antennae, around which is a rufous area which sends a 
row line backward just within the upper margin of the eye. A 
dish band also extends forward upon the side of the head from 
anterior end of the eye to the base of the rostrum, where it 
3ts a similar line which passes backward along the sheath of the 
Arum. The head is sometimes wholly yellow, without markings, 
l those described may be variously obsolete or wanting. 
he thorax is trapezoidal in outline, strongly narrowed forwards, 
anterior margin being about half the length of the posterior. 
D latter is regularly rounded, the sides are straight, and not mar- 
fid. Just within the anterior border, a sub-marginal, impressed 
5 marks off a smooth, marginal callus, and behind this the ante- 
fourth of the disk of the thorax is separated by a less deeply 
iressed line, before which the surface is nearly smooth. The 
face of the pronotum generally is coarsely and rather closely 
pictured, the punctures being somewhat smaller and thicker on 
| sides and posterior declivity, where they have a tendency to a 
ial arrangement. From each puncture springs a short, pale, 
1 tk hair. 
I 
L 
