154 APHIDS OF THE ROCKY MOUNTAIN REGION 
Aphis monardae Oestlund 
Aphis monardae Oestlund, 1887:58; Gillette and Palmer, 1932b:421. 
Apterous Summer Vivipara. “Abdomen greenish, with much mottling of black above. 
Honey tubes black’; cauda and anal plate dusky, legs mostly pale; antenna and cornicle 
dusky. Body length 1.2-1.5 width 1; hind tibia .70; hind tarsal II .10; antenna 1.1; rostrum 
attaining 2d coxa. 
Alate Vivipara. Same as aptera as to above characters. Sensoria on III 5-7 large ones 
in single row, sometimes 8-12 smaller ones in irregular double row, appearing as though re- 
sulting from dividing of normal sensoria, on IV 2-4. Hairs inconspicuous, sparse, drooping; 
on III .01 long, on hind tibia .02. Cauda bearing 3-4 pairs of lateral and one median preapical 
hair. Lateral tubercles well developed on prothorax, and abdominal I and VI. Media of fore 
wing with 2d fork varying from hardly fourth te over third of distance from margin of wing to 
1st fork. 
Male. Alate. Same as alate vivipara except as follows: Cornicle .07 and antenna bear- 
ing sensoria on III, IV and V. 
Le 
> 
23 brs 
123.22 
and ay sanatitnes fused, 
Harare Z 
[ Kalisae Kekre zor 
Fig. 172. Aphis monardae 
Collections. On leaves and flower heads of Monarda sp. Colorado: Boulder 
and Fort Collins and Canyon of Big Thompson River. Utah: Monte Cristo and 
Logan Canyon. Idaho: Twin Falls and Emigration Canyon. Apterous summer 
viviparae June 6 to Aug. 21, alate viviparae May 30 to Aug. 2, males Nov. 10; 
fairly common. Neither fundatrices nor oviparae have been taken and alatae 
were taken earlier than apterae. These facts together with the alate condition 
of males suggest the existence of an alternate host. No differences between 
this species and A. abbreviata Patch seem to be evident. This fact suggests 
Patch’s species as the winter cycle form of Oestlund’s species; but without 
biological transfer tests the synonymy cannot safely be declared. 
Cotypes. Univ. of Minn. Collection. 
Chief Distinguishing Characters. Number of sensoria (5-12) on III and 2-4 
on IV in alate vivipara, shortness of the cornicle (hardly longer than .20), 
number of caudal hairs (3-4 lateral pairs), black cornicle and occasional co- 
alescence of III with IV in both alata and aptera. 
This species is very close to A. gossypii and A. nasturtii. 
Aphis nasturtii Kaltenbach 
Aphis nasturtii Kaltenbach, 1843:76; Theobald, 1927:139; Palmer, 1936b:738. 
Apterous Summer Vivipara. Pale green; antenna, cornicle, anal plate and cauda brown- 
ish; tibiae pale with dark tips; rostral III, IV, and V and antennal V and VI dusky. Body 
length 1.5-1.9; across eyes .34; hind tibia .60-.65; antenna .62-.70 in some and .85-.95 in others 
which are otherwise identical. Cornicle cylindrical with somewhat broadened base; cauda 
parallel-sided, bearing 2 pairs of lateral hairs. Hairs inconspicuous, .02-.03 on hind tibia, .015 
on antennal ITI. 
08-15 ie # 08; rf MZ-NT: a rn ars Ie otk “inet 16-25 
Sis name : 
sigh hd Rost Eos 
Fig. 173. Aphis nasturtii 
Alate Vivipara. Head and thorax dark; abdomen pale green with lateral areas dark and 
denticulate; appendages including rostrum, dusky except tibiae which are yellowish with dark 
