THE FALSE CHINCH BUG. 29 
DESCRIPTION. 
Winged viviparous female. — Length, L.99 mm.; width, 0.58 nun.; antenna-, 1.33 
mm.; segment III, 0.33 mm.; IV, 0.27 nun.; V, 0.22 mm.; VI, 0.10mm.; VII, 0.27 
mm.; wing expanse, 6.64 nun.: cauda, 0.11 mm.; cornicles, 0.34 mm. ; metatibiae, 
0.91 mm. 
Head, thorax, antennae, cornicles, and cauda black; abdomen slightly lighter or more 
grayish-black; legs yellowish, except distal half of femora and distal fifth of tibia and 
tarsus, which are dark; stigma and insertion of wings yellowish; three lateral black- 
ish spots on margin of abdominal segments in front of cornicles, and fainter dark- 
brown markings forming broken bands on abdominal segments. Cornicles straight, 
tapering. Antennae with a row of about five sensoria on segment III. 
Apterous viviparous female. — Length, 1.H6 mm.; antenna-, 1.19mm.: segment III. 
0.25 mm.; TV. 0.15 mm.; V, 0.17 mm.; VI, 0.11 mm.; VII, 0.22 mm.; cauda, 0.13 
mm.; cornicles, 0.33 mm.; metatibiae, 0.86mm. 
Reddish or brownish black when seen under lens, but otherwise apparently shin- 
ing black; cornicles and cauda black; sutures of caudal segments whitish, pulverulent: 
antenna* yellowish, except black distal segments; legs yellowish, except tarsi, tips of 
tibiae, and tips of metafemora; cornicles slightly constricted at base, extending to 
or beyond tip of cauda. 
First and second instars. — Light yellowish brown, a lisrht stripe bounded on either 
side by a darker brownish stripe along the dorsomeson; cornicles black and connected 
by a dark rusty band: head darker, rather greenish: legs and antenna- similar to 
adult. 
Third instar (which will form pupa). — Deep pinkish, dorsal lines on abdomen as 
in previous instar; shoulders whitish, otherwise same as before. 
Pupa. — Deep pinkish. 
Fourth instar, apterous. — Deep reddish or maroon covered with whitish pulveru- 
lence; head rather greenish; at first the body is greenish or brownish, but gradually 
becomes uniform dark reddish as seen under lens, and finally blackish. 
In either this last or the adult stage the insects commence to turn 
blackish on the caudal portion, the change in color gradually extend- 
ing forward. At the same time the pruinosity is lost, and finally the 
adults become shining blackish. The color of the immature stages is 
exceedingly variable. 
THE FALSE CHINCH BUG. 
[Nysius angustatus Uhl. Fig. 15.) 
During the spring of ltK)4 the false chinch bug occurred in unusual 
numbers over widely separated localities in Texas and Louisiana, dam- 
aging all sorts of crops, many of them not heretofore known to be 
injured by it. and among them cotton. 
Attention was first called to its occurrence by the citizens oH Sabinal. 
Uvalde County, Tex., late in April; and on May *2 Mr. Sanborn visited 
tin 1 locality. The insect had been known there for several years, but 
until that spring had never done serious damage. The young bugs 
occurred at that time in countless numbers, having caused the mesquite 
trees to turn yellow, and destroyed the young cotton so as to necessi- 
tate replanting over large areas, more or less injury occurring over the 
