282 APHIDS OF THE ROCKY MOUNTAIN REGION 
and cornicle beyond base dusky; tibiae brownish, darker at knees and tips; tarsi blackish; 
cauda pale. Measurements as in apterous vivipara except as figured. Hairs slightly capitate 
and slightly shorter than in aptera. 
Ovipara. Apterous. Color and measurements same as in apterous vivipara except hind 
tibia dark throughout and with proximal two-thirds slightly swollen and rather sparsely cov- 
ered with scattered sensoria. 
Male. Alate. Color similar to alate vivipara. Body length 1.60; cornicle .27-.32; cauda 
.10 on median line, .13 on side. Otherwise as in alate vivipara. 
Egg. Newly laid, deep amber-yellow. Size .70 by .30. 
Collections. On leaves of Thalictrum sp. Colorado: Fort Collins. Funda- 
trices May 20, apterous summer viviparae May 20 to June 29, alate viviparae 
June 16 to 28, sexuales June 29; not common. 
Cotypes. Univ. of Minn. Collection. 
7) 
Secu. 
1g aes 
E0S8F 0S oO = 5 
Fig. 339. Kakimia purpurascens 
Chief Distinguishing Characters. Dark markings of posterior portien of 
abdomen, especially noticeable in aptera, slender elongate cauda bearing about 
4 lateral pairs of hairs, broad short rostral IV+V (.11, shorter than hind tarsal 
II) and presence of sensoria on IV in alate vivipara. 
Kakimia ribe-utahensis Knowlton 
Kakimia ribe-utahensis Knowlton, 1935b:281; Knowlton and Allen, 1939:170. 
Apterous Summer Vivipara. Body without dark markings; antenna beyond proximal 
two-thirds of II, tips of tibiae, and of cornicle and entire tarsi dusky; cauda and proximal 
parts of appendages pale. Body length 2.40-2.90; across eyes .50; hind tibia 1.47; hind tarsal 
II .09-.10; antennal III .70 with 12 sensoria, IV .35, V .41, VI .11+? (broken); cornicle .44, 
imbrications denticulate; rostral IV-+V .16-.17, attaining 3d coxa; cauda, on median line, .26, 
bearing 2 pairs of lateral hairs and one preapical one, the proximal pair being pointed and the 
last three hairs capitate. Hairs capitate; on vertex .045, on antennal III .045 (length equal 
to diameter of III) on hind tibia .04-.045 (length equal to diameter of tibia); on body (side 
of abdomen) .04. 
Alate Vivipara. Color as in apterous vivipara. Antenna 2.3, III .60 with about 38 sen- 
soria, IV_ .37, V .34, VI .10+.64; hind tibia 1.47; hind tarsal II .11; cornicle .39; rostral 
IV+V .16, attaining 3d coxa; cauda with 2-3 pairs of lateral hairs and one preapical one. 
Hairs less distinctly capitate than in aptera but blunt or flattened at tip, and .03 on antennal 
III, hind tibia and‘side of abdomen. 
Ovipara. Apterous. Body 1.5 by .88; hind tibia .53; hind tarsal II .06; antenna .90, III 
-18, IV .09, V .13, WI .07+.26; cornicle .17, imbrications denticulate; cauda .10, tapering,. 
bearing 2 pairs of lateral hairs and one preapical one. Caudal hairs are pointed or blunt but 
not noticeably capitate. Rostral IV-+V .11, attaining slightly beyond 2d coxa. Hairs on 
vertex, body and appendages blunt to slightly capitate and .03 long. 
Collections. On “native black currant (Ribes aureum).” Utah: Cedar City. 
Alate and apterous summer viviparae and apterous oviparae July 8 and 18; 
apparently rare. 
Type. Knowlton Collection. 
This species apparently differs from K. cerei structurally, only in the 
slightly shorter rostral IV-+-V (.16-.17 instead of .17-.20) and the smaller ovipara 
(1.50 instead of 1.75-1.80). The three hairs on the tip of the cauda are distinctly 
capitate (those of cerei are either pointed or blunt hardly capitate). It differs 
in life cycle in the abundant presence of sexuales in July instead of September 
