16 BULLETIN" 100, TJ. S. DEPARTMENT OF AGRICULTURE. 



form three transverse bars or bands, of which those on segments 4 and 5 do not quite reach 

 the lateral margins of the segments, while that on the third segment is slightly shorter 

 and but half as broad as the others. "Wings absent. Cornicles quite similar to those of 

 the winged viviparous female. Cauda globular, concolorous with the abdomen, larger 

 than that of the winged viviparous female. Anal plate large, U-shaped, extending 

 beyond the cauda when viewed from above. In reality it has a shallow incision at 

 the apex. Antennae on slight frontal tubercles, reaching to the middle of the meta- 

 thoracic segment, white, with the apices of joints 3 to 6 black. Legs very pale yellow, 

 almost hyaline; tarsi dusky gray at their apices. All six femora have the character- 

 istic black or brown knee spot. Beak yellow, the extreme tip black, reaching to the 

 second coxae. Hind tibiae not much swollen, bearing about 35 circular sensoria 

 occurring evenly on the middle two-thirds of the tibia and arranged in an irregular 

 spiral. Measurements: Length of body, 1.60 mm.; width of body, 0.81 mm.; an- 

 tenna, joint I, 0.06 mm.; joint II, 0.04 mm.; joint III, 0.22 mm.; joint IV, 0.125 

 mm.; joint V, 0.109 mm.; joint VI, 0. 081 mm.; filament, 0.023 mm. Cornicles, 0.06 

 mm. Cauda, 0.085 mm. 



Described from specimens collected in the fall of 1911 at San 

 Jose, Cal. 



THE FULL-GROWN MALE PUPA. 



In its immature stages the male pupa resembles the oviparous 

 female. A description of a single full-grown male pupa taken at 

 San Jose, Cal., October 27, 1912, is as follows: 



General color pale lemon yellow. Antennae pale, whitish, ieaching to the anterior 

 margin of the metathorax; last three joints black or dusky. Head and prothorax 

 brownish. Eyes bright red. Wing pads very pale. Legs entirely whitish, only the 

 hind femora bearing the characteristic knee spot; tarsi dusky gray. Cornicles as 

 broad as long. Cauda very small, rounded. Cornicles and cauda pale yellow. Head, 

 thorax, and abdomen with two longitudinal dorsal rows of oval black spots and with 

 two such lateral rows of circular black spots. On each of these spots is situated a tuber- 

 cle having a single capitate hair. Excluding the wing pads the body resembles that 

 of the immature sexual female. Measurements: Length of body, 1.01 mm.; width 

 of body, 0.50 mm.; antenna, joint I, 0.049 mm.; joint II, 0.035 mm.; joint III, 

 0.121 mm.; joint IV, 0.081 mm.; joint V, 0.087 mm.; joint VI, 0.063 mm.; filament, 

 0.023 mm. 



THE WINGED MALE, ADULT STAGE (FIG. 8). 



General color of the body pale yellow or greenish yellow. Head, prothorax, and 

 thorax grayish black. Scutellum black. Eyes bright red. Antennae not on frontal 

 tubercles, reaching to the posterior margin of the first abdominal segment, pale yellow; 

 joints I and II, the filament or spur, and the articulations of joints III to VI dusky 

 gray. These dark articular annulations are less pronounced than in the viviparous 

 female. Wings of medium size; costa, subcosta, and insertions pale yellowish gray; 

 stigma short and gray, with its central area paler; veins gray, second fork of third 

 discoidal nearer to the wing apex than to the first fork and arising beyond the apex 

 of the stigma tic vein; stigmatic vein evenly and gently curved, absent in the middle 

 for a space equal to one-third of its length. Legs longer in proportion to the body than 

 those of the other forms; front legs and middle tibiae very pale yellow or yellowish 

 green; distal two- thirds of the middle and hind femora shaded gray, the black knee 

 spot being present on these four femora; hind tibiae shaded gray for its proximal three- 

 fourths, its apical fourth pale yellow; all tarsi light gray. Abdomen barely as long 

 as the head and thorax combined, widest at the fourth segment, and with a pair of 



