84 APHIDS OF THE ROCKY MOUNTAIN REGION 
minutely denticulate. Cornicle mere ring. Fore wing with media usually twice-branched; hind 
wing with veins rather faint. Rostral IV-+V very broad .05 long by .06 at base, barely sur- 
passing Ist coxa. 
rere SEM /ipof Abdomen xh TR 
Alate Viv. 26-40 : oa 2 
Alate Viv ) 
5 
a 
Fig. 89. Thripsaphis producta 
Collections. On leaves of Carex nebraskensis. Colorado: Fort Collins. Utah: 
Salt Lake City. Apterous summer viviparae June 20 to Oct. 16, alate viviparae 
June 3 to 20; common. 
Type. U.S.N.M., No. 41948. Paratypes, Colo. Agr. Exp. Sta. Collection. 
This species differs from T. ballii as follows: Darker body (especially in the 
aptera), presence of secondary sensoria on antenna of aptera, greater number 
of sensoria (more than 7) on III of alata, more produced vertex in aptera, and 
usually more U-shaped cleft in anal plate. 
Thripsaphis utahensis Knowlton and Hall 
Thripsaphis utahensis Knowlton and Hall, 1950:41. 
Apterous Summer Vivipara, (Mounted on slide), pale except as follows: Antenna, espe- 
cially beyond base of III dusky, legs slightly dusky. Dorsum sparsely denticulate to papulate. 
Vertex with wartlike projection rising gradually. Tergite VIII rounded. Body length 1.3; 
across eyes .41-.44; antenna 1.12; hind tibia .56; hind tarsal II .15; rostrum attaining between 
SOI Tire ose TSS} 
5-20 Sen. 
© 0 380 0,400 
06 2 28 22°90 0005 
©2069 0,99 00 = 
Fig. 90. Thripsaphis utahensis 
Alate Vivipara. (Mounted on slide), pale except as follows: Head, thorax, dorsal bands 
and lateral areas on abdomen, antenna, cornicle and tarsi dark; legs, cauda and anal plate pale 
to dusky. Dorsal surface coarsely and sparsely denticulate. Body length 1.65; across eyes .40; 
antenna 1.33; hind tibia .65; rostral IV+V .06 long, surpassing 1st coxa. Vertex with median 
projection rising gradually. 
Ovipara. Apterous. Markings same as apterous vivipara with the addition of slightly 
dusky lateral areas on abdomen. Body length 2.25; across eyes .45; hind tibia with proximal 
half somewhat swollen and covered with scattered sensoria. 
Male. Apterous. Body length 1.45; across eyes .35; antenna 1.16; hind tibia .45. Other- 
wise as in vivipara. 
Collections. On grass. Utah: Brigham and Logan. Apterous viviparae May 
24 and Oct. 15, alate viviparae May 24, sexuales Oct. 15; rare. 
Type. Knowlton Collection. 
Chief Distinguishing Characters. Wartiike projection on vertex which arises 
gradually, not abruptly, absence of sensoria on III of aptera and length of 
unguis (.12). 
Thripsaphis verrucosa Gillette 
Brachycolus ballii Gillette, 1908b:67 (ovipara-misidentification). 
Thripsaphis verrucosa Gillette, 1917c:194; Gillette and Palmer, 1931:911; Hottes and 
Frison, 1931a:271; Strom, 1942:334 (synonymy). 
Thripsaphis caricicola Swain, 1918a:367. 
A pterous Vivipara. Same as ovipara except hind tibia which is not swollen. 
