KATYDIDS INJURIOUS TO ORANGES IN CALIFORNIA. 
17 
with minute black clots in longitudinal rows, forming one crossrow 
upon each abdominal segment near hind margin; legs marked with 
more conspicuous black dots. 
Second instar (fig. 12). — Measurements: Length of body, 6 mm.; 
length of head, 2.4 mm.; length of pronotum, 1.14 mm.; length of 
posterior femur, 5.8 mm.; length 
of posterior tibia, 6 mm. ; length of 
antenna, 21.96 mm. Shape and 
color of body about as in first instar. 
Third instar (fig. 13). — Measure- 
ments: Length of body, 7.5 mm.; 
Fig. 12. — The angular-winged katydid: Second-in- 
star nymph. Somewhat over twice natural size. 
(Original.) 
Fig. 13.— The angular-winged katydid: Third-instar 
nymph. Nearly three times natural size. (Origi- 
nal.) 
length of head, 2.9 mm.; length of pronotum, 1.6 mm.; length of 
posterior femur, 8 mm.; length of posterior tibia, 8 mm.; length 
of antenna, 20.25 mm. Color and shape of body as before, except 
that black spots are less conspicuous. 
Fourth instar (fig. 14). — Measurements: Length of body, 10 mm.; 
length of head, 3.75 mm.; length of pronotum, 2.66 mm.; posterior 
femur, 10 mm.; posterior 
tibia, 11 mm.; antenna, 
20 mm. General color of 
body light green, merging 
into yellow on sides of ab- 
dominal segments; abdo- 
men white beneath, or 
nearly so. Wing-pads 
sufficiently developed to 
be distinctly recognizable 
as such, hind pair show- 
ing well-developed veins 
and just overlapping first 
abdominal segment; tips 
of wing-pads directed downward and slightly backward. 
Fifth instar (fig. 15). — Measurements: Length of body, 15 mm.; 
length of head, 4.5 mm.; length of pronotum, 4 mm.; posterior 
Fig. 14.— The angular-winged katydid: Fourth-instar nymph. 
Two and one-half times natural size. (Original.) 
femur, 13.25 mm.; posterior tibia, 14.5 
antenna, 29 mm. 
