72 Thomas Albert Williams 



Genus Amphorophora 



90. Amphorophora arrlpullata Buckton? 



Buckton, Mon. Brit. Aph., I, p. 187, pi. XXXVII, fig. 4 (1876). 



Oestlund, Syn. Aph. Minn., p. 77 (1887). Rhopalosiphum ampullata. 

 Apterous viviparous female: Bright green, often with the color deepen- 

 ing on the dorsum and along the sides of the abdomen. Antennae very 

 long, nearly or quite twice the length of the body, on very large frontal 

 tubercles ; pale, with the articulations blackish. Eyes dark red. Legs 

 greenish, with tibial tips and tarsi black, rather large and long. Honey 

 tubes reaching beyond the tip of the abdomen ; green, with black tips ; very 

 much dilated in the middle. Tail hardly one third as long as the honey 

 tubes, yellowish, upcurved. The young can be seen very plainly within 

 the parent insect. Length of body about 3.10 mm. 



On under side of leaves of an undetermined rosaceous plant. 

 Ashland, October, 1889; quite common. I do not think that this 

 species can be placed in the genus Rhopalosiphum, as is done by 

 Oestlund. It differs from the typical members of that genus in 

 too many particulars. 



Genus Siphonophora 



91. Siphonophora ambrosiae Thomas. 



Thomas, Bull. 111. St. Lab. Nat. Hist., No. 2, p. 4 (1878). 

 Thomas, Ins. Ill, 8th Rep., p. 50 (1879). 

 Oestlund, Syn. Aph. Minn., p. 84 (1887). 



Apterous viviparous female: Color dull reddish brown. Elongate oval. 

 Antennae longer than the body, on large, conspicuous tubercles ; I dark 

 brown, II and base of III pale, remaining joints black; VII longer than 

 III; hairy. Eyes dark red. Beak reaching hind coxae. Legs yellowish, 

 with femoral and tibial tips and tarsi black. Abdomen with dorsum tuber- 

 cled. Honey tubes black, reaching beyond tip of abdomen, 0.90 mm. long. 

 Tail two thirds of the honey tubes in length, yellowish, upcurved, acute. 



Pupa: Similar to the female, but with limbs generally shorter. Wing- 

 pads dusky black. 



Winged viviparous female: General color dark seal brown, shining. An- 

 tennae slightly longer than body, pale at base, rest black, with capitate 

 hairs; VII longest. Abdomen without the tubercles of the apterous female. 

 Wings with the discoidals much curved. Legs blackish except base of 

 femora, long. Beak, honey tubes and tail much as in the apterous form, 

 but generally a little shorter. Length of body about 2.75 mm., to tip of 

 wings 4.75 mm. 



On Ambrosia trifida, during the seasons of 1888-90; very com- 

 mon. Weeping Water, Ashland, Lincoln. 



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