58 Thomas Albert Williams 



Monell, Bull. U. S. Geol. Sur. Ten, V, i, p. 23 (1879). Aphis setariae. 

 Oestlund, Syn. Aph. Minn., p. 67 (1887). Aphis setariae. 



Apterous viviparous female: Subglobose. General color brownish red. 

 Antennae on inconspicuous tubercles, reaching to base of honey tubes; I, 

 II, tips of IV and V and all of VI and VII brown; VII longest. Eyes 

 dark red. Legs yellowish, with dusky femoral and tibial tips and tarsi. 

 Honey tubes tapering, dusky to black, 0.36 mm. long. Tail short, slender, 

 pale. 



Pupa: Elongate. Head brown. Antennae similar in color but less than 

 half the body in length. Wing-pads brownish. Honey tubes similar but 

 shorter. Tail not noticeable. 



Winged viviparous female: Antennae at least as long as the body, on 

 inconspicuous frontal tubercles; III-V with sensoria; VII one and one 

 half to two times as long as III. Thorax dull black. Prothorax with 

 lateral tubercles. Legs pale, with black joints and tarsi. Wings hyaline; 

 discoidals equidistant at base; second branch of cubital arising much 

 nearer the apex of wing than to first branch ; stigma acute, dusky. Abdo- 

 men pale to reddish brown. Honey tubes dusky to black, 0.20-0.30 mm. 

 long. Tail pale, nearly as long as the honey tubes. Length of body about 

 1.35 mm., to tip of wings 3 mm. 



On barnyard grass (Panicum crus-galli), foxtail (Setaria 

 glauca and S. viridis), and many other grasses. Ashland, Lin- 

 coln, Weeping Water. 



Specimens in the collection of the University of Nebraska (nos. 

 89, 90) and of the U. S. National Museum (no. 114). 



J2. Aphis solidaginifoliae n. sp. 



Apterous oviparous female: When young they are of a bright reddish 

 brown color, with eight longitudinal rows of impressed dots on the dor- 

 sum. The mature individuals are dark red-brown, with transverse bands 

 of blackish brown on each segment of the body; these are paler on the 

 prothoracic segments. A row of impressed dots extends along each side 

 of the body from the head to the tail. Head brown. Eyes black. An- 

 tennae with no frontal tubercles; tips of the joints black; VII longest and 

 imbricated; III-V with a few scattered sensoria, and each with several 

 stiff spreading hairs; all the joints irregular in shape. Beak hardly reach- 

 ing the middle coxae. Legs very short, reddish, with tips of tibiae and 

 tarsi dusky. Coxae brown. Honey tubes short (0.10 mm.), black. Tail 

 short, conical, black. Anal plates blackish brown. Whole insect more or 

 less covered with long, spreading hairs. Outline elongate oval, rather 

 drawn out at each end. Length of body 2 mm. 



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