SUBFAMILY APHINAE 341 
Alate Vivipara. Spring Migrant. Head and thorax black; abdomen pale yellowish green 
with dark dorsal patch (sometimes broken into bands) and lateral areas; cauda pale to dusky; 
tibiae pale to sordid with tips and tarsi black; cornicle dusky; antenna dusky to black except 
base of III; veins not smoky. Body length 1.8-2.1; across eyes .43; hind tibia 1-1.55; antenna 
2.2-2.7; rostrum hardly attaining 2d coxa. Cornicle cylindrical, not noticeably swollen. Hairs 
blunt; on side of abdomen .01. Cauda with slight constriction, bearing 3 pairs of lateral hairs. 
Fall Migrant. Yellowish and with cornicle slightly swollen. 
Ovipara. Young. Newborn, green but soon changing to the adult color. Adu/t. Apterous. 
Bright flesh or salmon. Appendages as in apterous vivipara except that hind tibia may be 
dusky. Body length 1.50-2; across eyes .36; antenna 1.20-1.45; cauda .14 on median line, .18 
on side; hind tibia with proximal half to two-thirds very slightly swollen and bearing scat- 
tered sensoria. 
Male. Alate. Same as fall migrant except as follows: Dark abdominal markings often 
more extensive; cornicle dusky to black and as figured. 
Egg. Newly laid, green to yellowish; later, shining black. Size .66 by .33. 
Collections. As winter host: On leaves, curling them, of peach and nectarine 
mostly,* but also apricot (Prunus armeniaca), sand cherry (P. besseyi), cherry 
(P. cerasus), plum (P.americana and P. domestica), flowering almond (P. japon- 
ica) and choke cherry (P. virginiana); as summer host, on leaves of hollyhock 
(Althaea rosea) Amaranthus sp., snapdragon (Antirrhinum sp.), celery (Apium 
graveolens), horseradish (Armoracia lapathifolia), asparagus fern (Asparagus 
sp.), sugar beet (Beta vulgaris), rape (Brassica napus), cauliflower and cabbage 
(B. oleracea), turnip (B. rapa), pot marigold (Calendula officinalis), shepherds- 
purse (Capsella bur a-pastoris), thistle (Cirsium sp.), lambsquarters (Chenopo- 
dium album), chrysanthemum, Cineraria sp., watermelon (Citrullus vulgaris), 
wild morning glory (Convolvulus sp.), canteloupe (Cucumis melo), squash 
(Cucurbita maxima), carnation (Dianthus sp.), foxglove (Digitalis purpurea), fe- 
tid marigold (Dyssodia sp.), strawberry (Fragaria sp.), Iresine lindeni, wild let- 
tuce (Lactuca spicata), Lepidum sp., easter lily (Lilium candidum), Lupinus sp., 
tomato Lycopersicum esculentum), apple (Malus sp.), Malva neglectus, tobacco 
(Nicotiana tabacum), bluegrass (Poa sp.), poppy (Primula africana and P. for- 
besi), Quincula lobata, radish (Raphanus sativus), calla lily (Richardia sp.), 
castor bean (Ricinus communis) watercress (Roripa nasturtium-aquaticum), 
dock (Rumex sp.), Russian thistle Salsola sp.), egg-plant (Solanum melongena), 
potato (Solanum tuberosum), Sphaeralcea coccinea, Stellaris media, Tanacetum 
vulgare, red clover (Trifolium pratense), white clover (T. repens), nasturtium 
(Tropaeolum majus), Tulipa sp., Verbena sp., Vicia sp., violet (Viola sp.), wheat 
and corn. Throughout region. Fundatrices on winter host March and April; 
apterous summer viviparae on winter host March 14 to May 22, on summer hosts 
May 15 to Nov. 2; alate viviparae (spring migrants) on winter host March 23 to 
June 15 and (fall migrants) Sept. 12 to Nov. 11, on summer hosts April 25 to 
Nov. 9; sexuales on winter host Oct. 7 to Nov. 12; very common and often in- 
jurious. 
Chief Distinguishing Characters. Pale green body with darker green longi- 
tudinal stripes in early summer aptera and dark dorsal patch (sometimes broken 
into bands) in all alate forms, slightly swollen cornicle in summer and fall 
forms and its inconspicuous imbrications, number of sensoria (10-15) in alate 
vivipara on III and their absence on IV and only very slightly swollen hind 
tibia of ovipara rather sparsely covered with sensoria. 
*Progeny of the stem mothers rarely develop well on hosts other than peach. 
