SUBFAMILY APHINAE 220 
Key to Species of Siphonatrophia 
1. Antenna five-segmented; media of fore wing twice-branched (p. 225)..........:::00s000-+ cupressi 
Antenna usually six-segmented in summer viviparae; media of fore wing 
(eVeE GS SVS WV Te ACR Heyy cope a sed SE as oe oe Sg CORR a ee (Ty en Pee RE Sa gravida 
[Genotype Siphonatrophia cupressi (Swain) ] 
Cerosipha cupressi Swain, 1918b:19. 
Siphonatrophia cupressi, Gillette and Palmer, 1932b:492. 
Apterous Summer Vivipara. Body length 1.15-1.29; antenna .51-.54, III+IV .137-.17, 
V .093-.102, VI .17-.204; cauda .187-.204; hind tarsal II .119; diameter of cornicle at base .035, 
diameter of opening .021, 
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15 #238 
Alate Viy, 
= 
(After Swain), 
Fig. 263. Siphonatrophia cupressi 
Alate Vivipara. Head and thorax dark; abdomen dark green; cauda and appendages pale 
or greenish. Body length .98-1.27; antenna .493-.646; hind tarsal II .102-.119. Frontal tubercles 
lacking. Antenna five-segmented, secondary sensoria circular, in single row, 5-8 on III, 1-3 
on IV; rostrum attaining 2d coxa. Lateral tubercles not evident. Fore wing with media twice- 
forked and with 2d fork nearer to margin of wing than to lst fork. Cauda long, ensiform, quite 
conspicuous, slightly longer than eighth of body, 1.5 times length of hind tarsal II. Cornicle 
a mere raised pore, very hard to distinguish. 
Host. Cupressus guadelupensis and C. macrocarpa. (Not taken in region. ) 
Data for above description obtained from original description by Swain (op. cit.). 
Siphonatrophia gravida (Knowlton) 
The Hemispherical Juniper Aphid 
Minuticornis gravida Knowlton, 1928c:60. 
Siphonotrophia gravida, Gillette and Palmer, 1929a:12 and 1932b:493. 
Fundatrix. Light-cedar green; tinged with dusky on head; shining; antenna, except 
terminal segments and tips of preceding ones, cauda and tibiae except tips pale; cornicle 
concolorous with body. Body length 1.25; hind tibia .35-.40; antenna .40-.46. Otherwise as in 
apterous summer vivipara. 
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Fig. 264. ES aa gravida 
Apterous Vivipara. Nymph. Yellowish green; appendages colorless; cauda short, tri- 
angular. Dorsum not pronouncedly convex. Adult. Cedar-green, imitating the cedar scales; 
all appendages pale with dusky tips. Body length 1-1.7; hind tibia .40-.45; antenna .60; 
rostrum rather than broadly obtuse, attaining 3d coxa or abdomen. Body hemispherical. 
Alate Vivipara. Meso- and metathorax brown; rest of body as in apterous vivipara; 
stigma of fore wing pale. Body length 1.1-1.6; hind tibia .50-.55; antenna .66-.75. Hairs minute 
or not evident on body, very sparse, on legs .01; on cauda .03, slightly curved. Cornicle a mere 
pore on conical base. Cauda elongate-tapering, bearing about 7 hairs on each side. Fore wing 
with media once-branched. 
