KATYDIDS INJURIOUS TO ORANGES IN CALIFORNIA. 



17 



with minute black dots 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 ligbt green, merging 

 into yellow OB sides of ab- 

 dominal segments; abdo- 

 men white beneath, or 

 nearly bo. Wing-pads 

 sufficiently developed to 

 be disl incl ly recognizable 

 as such, hind pair show- 

 ing well-developed reins 

 and j'i i overlapping first 

 abdominal segment; tips 

 of wing-pads directed downward and slightly backward. 



Fifth instar (fig. 15). Measurements: Length of body, L5 mm.; 

 length of head, 1.5 nun.; length of pronotum, 1 nun.; posterior 

 femur, 13.25 nun.; posterior tibia, 14.5 nun.; antenna, 29 nun. 



14, The angular-winged katydid: Fourth-lnstar nymph. 

 i o and one-half times natural size. (Original.) 



