314 APHIDS OF THE ROCKY MOUNTAIN REGION 
Male. Alate. Head and thorax yellowish brown; abdomen yellowish olive-green to yel- 
low-brown. Measurements as in alate vivipara or slightly smaller. Antenna with numerous 
sensoria on III and IV and a row along posterior edge of V. 
Collections. On leaves of Artemisia vulgaris, A. ludoviciana, A. ludoviciana 
subsp. typica, Eurotia lanata and Tanacetum sp. Throughout region. Funda- 
trices Mar. 16, alate and apterous summer viviparae June 20 to Oct. 16, sexuales 
Oct. 15 to 26; common. 
Type. Lost, according to Hottes and Frison (1931a:315). 
& A 
9 oy ee L . . - 
-~< BoP OR a TER 3 
alse a TNT estes) CSE cee etnenrmamntiig cee 
' ; RRR s | C19 “ogy. 
C7/- 1.20) 
SYS 
yy? 
y 52) 4) 
) ne) 
! 
) 
) 
bebe! 
Fig. 374. Macrosiphum ludovicianae 
Chief Distinguishing Characters. Glaucous green body, long reticulated 
area on cornicle (.23-.40, about half length of cornicle), cornicle length (shorter 
than antennal III, hardly as long as V but distinctly longer than cauda), nu- 
merous sensoria on III and on hind tibia of ovipara, numerous hairs on cauda, 
pale color of cauda and anal plate and acute but not needlelike rostral IV-+V 
in length coequal with hind tarsal II. 
This species is very close to M. tanacetaria (Kaltenbach) and M. artemisiae 
Boyer de Fonscolombe but differs according to description by Theobald (1926: 
161 and 164) and from apterous specimens determined by Hille Ris Lambers as 
follows: Color of cauda, anal plate and head (not black), sensoria on HI (more 
numerous than 5-7 except in fundatrix) and length of cornicle (distinctly longer 
than cauda). . 
Macrosiphum macrosiphum (Wilson) 
The Long-legged Serviceberry Aphid 
Illinoita macrosiphum Wilson, 1912a:155. 
Macrosiphum macrosiphum, Gillette and Palmer, 1934:188; Hottes, 1949a:45. 
=X 
9 1 aa Va pt se TT) R. cy Tt 
AON IM oot ys ! (55-.60) (sen. 0-2) 
Wage oe QQ Co. (68 to) 
set 
Se 
Ng30- = Se 
(55-63) (.57~.63) 
15-19) e (90- 1.35) 
Ss) Hd, Co. (t18- 1.35) 
14 Ta. 
Fig. 375. Macrosiphum macrosiphum 
Apterous Summer Vivipara. Head light to medium amber-yellow; remainder of dorsum 
green to yellow; cauda and anal plate pale; tip of rostrum, cornicle beyond proximal fifth 
which is sordid yellow and antenna beyond base of III dusky to blackish; tibiae brownish, 
darker at knees and tips. Body length 1.5-1.9; across eyes .39-.43; hind tibia 1.5-1.8; antenna 
3-3.8; rostrum attaining 2d coxa. Hairs slightly capitate; on side of abdomen .01. Cornicle 
often with slight suggestion of enlargement on distal third, without reticulation, sometimes 
bearing a few inconspicuous hairs. Cauda parallel-sided to tapering, bearing 2 lateral pairs 
and 3-4 dorsal or dorsolateral hairs. 
Alate Vivipara. Same as apterous vivipara except as follows: Rostrum hardly attaining 
2d coxa and hairs slightly shorter also differences as figured. 
