234 APHIDS OF THE ROCKY MOUNTAIN REGION 
Alate Vivipara. Head and thorax pale, brown to dark golden brown on thoracic lobes; 
abdomen lemon-yellow, marked with grass-green in 4 quadrate spots, 2 on dorsum of abdomi- 
nal I and IV each; cornicle and cauda and anal plate pale; appendages blackish; rostrum 
and cornicle pale with dusky tip. Measurements same as in apterous vivipara except hind 
tibia which is 145. Hairs blunt to slightly capitate; on side of abdomen .015. 
Ovipara. Apterous. Color a little darker than apterous vivipara; measurements about 
the same. Proximal half or more of hind tibia moderately swollen and bearing many sensoria. 
Male. Alate. Color same as in alate vivipara. Body length 1.70; antenna 2.70; corni- 
cle .28. 
Egg. Newly laid, sordid pale greenish; later, black, shining. Size .80 by .36. 
Collections. On leaves of Crataegus sp. Colorado: Denver and Fort Collins. 
Utah: Coalville, Logan, Hoytsville, Mount Timpanogos and Provo Canyon. 
Idaho: Hollister. Fundatrices May 18 to 30, apterous summer viviparae July 28 
to Oct. 6, alate viviparae July 28 to Sept. 18, males Sept. 23 to Oct. 2, oviparae 
Sept. 23 to Oct. 18; rather common, infestations sometimes heavy and injurious. 
Type. Davis Collection. 
Chief Distinguishing Characters. Color of body (pale yellow marked with 
green in 2 longitudinal lines or 4 dorsal spots), imbricated surface of antenna 
especially I and II, short cornicle, without reticulation and moderately swollen 
on distal two-thirds, absence of sensoria on III of apterous vivipara, presence 
of sensoria on IV of the male and short, tapering cauda with 3 pairs of lateral 
hairs. 
Amphorophora crystleae Smith and Knowlton 
Amphorophora crystleae Smith and Knowlton, 1939:241. 
Apterous Summer Vivipara. ‘‘Pale whitish-green.”” (Mounted on slide), pale throughout 
body and appendages, dusky only on tarsi and tip of rostrum. Body length 3-4.6; antenna 
6.4-‘‘6.9’’; hind tibia ‘‘3.12’’-4; rostrum attaining about to 3d coxa; cauda tapering, bearing 6-8 
hairs on each side. 
ante ick Rae eee rl & 3t A219 
1.50 1.58 Ms ae bead Hd. Tib: are 
Ta. SH) popekices! er 
Fig. 274. me ohorontere crystleae 
Male. Alate. “Body length 2.3-3.2; antenna 6.12-6.24, III 1.16, IV 1.13, V 1.14, VI 
.30-+2.16, sensoria about as follows: 70 on III, 40 on IV, 33 on V; hind tibia 3.02; hind tarsal 
II .17; cornicle .91, reticulated area .12; rostral IV+V .15; hairs on antennal III .027; cauda 
.3, tapering and bearing 5-6 hairs on each side.”’ 
Collections. On leaves of Lonicera involucrata. Utah and Idaho: Beaver 
Creek area of Logan Canyon. Apterous viviparae July 25 and Aug. 22, alate 
males Aug. 22. 
Chief Distinguishing Characters. Numerous sensoria (more than 15) on III 
in the apterous vivipara, long IV (as long as III) and fewer than 7 hairs on 
each side of cauda. 
Amphorophora fronki Knowlton 
Amphorophora fronki Knowlton, 1945b:206. 
Apterous Summer Vivipara. ‘‘Green.’”? (Cleared and mounted on slide), pale, with ap- 
pendages pale except tarsi, distal third of cornicle, tips of tibiae and antennal segments and 
most of rostrum which are brownish. Body length 2.10-2.30-‘‘2.40’’; across eyes .46-.48; antenna 
about 3; hind tibia 1.60-2.00; rostrum attaining 3d coxa. 
Alate Vivipara. ‘‘Green.’’ (Cleared and mounted on slide), head and thorax brownish; 
abdomen pale; entire rostrum and appendages brownish; cauda and cornicle pale, the latter 
darker distally; tarsi and tips of tibiae blackish. Body length 2 or more; antenna 2.60-“‘2.75”; 
hind tibia 1.65-‘1.72”; rostrum attaining 2d coxa. Cauda parallel-sided to slightly spoon- 
shaped, bearing 3-4 pairs of lateral hairs and one preapical one. 
