PROC. ENT. SOC. WASH., VOL. 22, NO. 5, MAY, 1920 83 



Pupa case. Broadly elliptical in shape; size 0.84 mm. long, 0..~>4 mm. in 

 width: color varies from a very light yellow to an orange yellow. The darker 

 color is always found where the body contents show through; submarginal 

 area lighter in color than the rest of the dorsum. Margin finely crenulate 

 and evenly rounded at the apex, with sutures extending mesad from each 

 tooth 0.016 mm. The thoracic tracheal comb consists of six small teeth, 

 the caudal comb of nine teeth. Both the caudal and tracheal combs are 

 made up of unchitinized and uncolored teeth and appear as indented portions 

 of the margin with very small marginal teeth. Dorsum unmarked, with 

 two small setae on the thorax; abdominal segments distinct. Vasiform 

 orifice elongate, cordate in shape, the caudal floor of the orifice crossed with 

 folds of the orifice membrane; operculum sub-cordate, filling one-half of the 

 orifice, caudal margin blunt and rounded, cephalic margin straight; lingula, 

 projecting beyond the operculum, setose, bi-lobccl and with one pair of setae 

 arising at the margin of the caudal lobe; cephalad and laterad of the orifice 

 are found two small setae. A pair of setae, 0.64 mm. in length, is found 

 caudad of the vasiform orifice and on either side of the caudal tracheal 

 comb. 



Adult female. Color of body light yellow with legs and antennae lighter 

 in color, wings immaculate, eyes dark brown. Length of body from vertex 

 to tip of genitaha 0.99 mm.; length of fore-wing 1.12 mm., width 0.40 mm. 

 Antennae seven jointed, Seg. Ill, 0.089 mm. with a fringed sensorium and a 

 setae near the distal portion of the segment, Seg. IV, 0.026 mm. ; Seg. V, 

 0.028 mm.; Seg. VI. 0.039 mm.; Seg. VII, 0.033 mm. in length and with a 

 slender distal setae. The venation of the wings is usual for Aleyrodes, the 

 remnant of the media in the fore- wing is very faintly shown. 



Adult male. The coloring of the male is the same as in the female. Length 

 of body from vertex to tip of genitalia 0.92 mm.; wing measurements the 

 same as in the female; genitalia long and slender, claspers upcurved, 0.10 

 mm. long, with two small and one large teeth on the inner margin near the 

 tip. Only three or four spines present on the claspers; penis slender, up- 

 curved, three-fourths as long as the claspers. Antennae seven jointed, 

 Seg. Ill, 0.07 mm. long, with a sensorium and setae; Seg. IV, 0.02 mm.; 

 Seg. V, 0.028 mm.; Seg. VI, 0.08(5 mm.; Seg. VII, 0.038 mm. in length, and 

 with a distal slender setae. 



Type. Cat. Xo. >M>1> U. S. N. M. 



EXPLANATION OF PLATE. 



1 Adult pupa case. '2 Caudal tracheal comb of teeth. 3- -Thoracic 

 tracheal comb of teeth. 4 Margin of pupa case. ."> Vasiform orifice. 

 6 Forewing of adult female. 7 Antennae of adult female. S Tarsus of 

 adult. 9 Adult claw. 10 Male genitalia. 



