Vol. XXvii] ENTOMOLOGICAL NEWS. 365 



Color Characters : Head and thorax black; eyes deep reddish brown; 

 antennae, legs and distal extremity of rostrum black or dusky ; abdo- 

 men greenish orange or brownish green, with the cauda, anal and 

 genital plates and a row of patches on either side of the abdomen 

 dusky to black. No large black spot is present in the middle of the 

 abdomen. 



Summer Apterous: Morphological characters: Antenna! segments 

 as follows: I, 0.08 mm.; II, 0.08 mm.; Ill, 0.128 mm.; IV, 0.064 mm.; 

 V, 0.08 mm.; VI (0.096 + 0.048 mm.). Segments with no sensoria ex- 

 cepting the usual ones, but with very many prominent hairs thickly 

 covering all the segments. Labium extending about to the hind coxae; 

 length from vertex to tip of cauda about 1.6 mm. Entire body covered 

 with rather long somewhat curved hairs. Some specimens are consid- 

 erably larger than the specimens measured. 



Color Characters : General color milky or pale yellowish and covered 

 with a fine white powder. Abdomen with rows of small blackish mark- 

 ings along the sides and several broken dusky bands in the region of the 

 cornicles. Antennae dusky. 



Summer Alate : Morphological characters : Antennal segments as 

 follows: I, 0.064 mm.; II, 0.064 mm.; Ill, 0.224 mm.; IV, 0.096 mm.; 

 V, 0.112 mm.; VI, (0.08 + 0.033 mm.). Segment III, sometimes armed 

 with two or three minute circular sensoria very much like the smaller 

 sensoria upon the corresponding segment of the spring migrant; other 

 sensoria normal. All segments armed with the prominent curved hairs 

 similar to those of the apterous form. In some cases there are no 

 sensoria present on segment III. Labium extending about to the hind 

 coxae. Total length from vertex to cauda about 1.6 mm.; entire body 

 covered with prominent curved hairs. 



Color Characters: Head, antennae and thorax black: abdomen whit- 

 ish or pale yellowish with blackish transverse bands between the corni- 

 cles and with a large quadrate patch on dorsum. Lateral spots of the 

 same color are present on the margins of the abdomen. 



Fall Migrant. This form and the sexes have been described by 

 Weed (1888). Only the measurements of this form will, therefore, be 

 given here. 



Antennal Segments : I, 0.064 mm - ; II, 0.032 mm. ; III, 0.208 mm. ; IV, 

 0.112 mm.; V, 0.128 mm.; VI (0.128 + 0.048 mm.). Segment Til is 

 armed with 6 to 7 subcircular sensoria; segments IV and V with usu- 

 ally 2 each and segment VI, with the usual large one and the small 

 accessory ones. This form has the large quadrate patch upon the abdo- 

 men similar to that of corni Fab. 



LITERATURE CITED. 



1857. Kficn. C. F. Die Pflanzenlause Aphiden, p. 275. 

 1858. FITCH, ASA. Fifth Kept, of State Ent. of New York, p. 804. 



