SUBFAMILY APHINAE 47 
wings hyaline with veins bordered and tipped with dusky, stigma pale medially, radial sector 
faint, especially proximally. Body length 2; hind tibia .75-.9; hind tarsal II .12; antenna 1.3. 
Hairs on vertex, .05, on body hardly evident; on hind tibia .05 long. Rostrum obtuse, IV+V 
.10 long attaining 2d coxa. Tubercles on lateral margins of all abdominal segments and a pair 
on occiput and on vertex. Imbrications on cornicle and dofsum of body denticulate. 
Apterous Summer Vivipara. Same in color and measurements as alate vivipara except 
as figured. Hairs pointed, curved, .10-.15 long on vertex and body; .10-.15 on hind tibia and 
.02 on antenna.* “ 
Ovipara. Apterous. Same as apterous vivipara except with hind tibia very dark, slightly 
swollen on proximal half and bearing numerous rather large weak sensoria. Abdomen not 
noticeably or only slightly drawn out to form ovipositor. ; 
Male. Alate. Same as alate vivipara except III bearing 13-15 sensoria. 
Fig. 79: Neosymydobius arnulatus 
Collections. On leaves of Betula alba and papyrifera. Colorado: Fort Col- 
lins, Denver, Greeley and Boulder. Utah: Fielding, Ogden, Hopper and Logan. 
Apterous and alate viviparae July 4 to Oct: 8, oviparae Sept. 16 to Oct. 3, males 
Oct. 3; rather rare. 
Our specimens differ slightly from Koch’s description in color in being 
rather lighter on body and darker on legs. 
This species does not entirely fit Neosymydobius; disagreeing in the pres- 
ence of more distinct frontal tubercles and longer unguis. 
N eosymydobius intermedius Gillette and Palmer n n. comb. 
Y B rm 
2 SFG eaal. f 
ee anrer lo- 15 
Hd. Ti 
> 
a 
19 . NSS 
Gated and anal plate. » 
3 aa V/'y, 3 
ESS = 
Fig. 80. N eosymydobius intermedius 
Symydobius intermedius Gillette and Palmer, 1930:544 and 1931:896. 
Fundatrix. Tawny olive to greenish with dusky crossbands, often coalescing, on ab- 
domen; cornicle pale; antenna annulated; legs dusky to black. Body length 2.66; hind tibia 
1.50; antenna 2.2, III .89, IV .47, V .44, VI .19+.07, sensoria on III 8-13. Other characters 
as in apterous summer vivipara. 
Alate Vivipara. Color of body same as fundatrix; fore wing with veins heavily bordered, 
the media and cubitus most broadly bordered. Body length 2; hind tibia 1.4; hind tarsal II 
.20; antenna 2.4; rostrum attaining 2d coxa. 
*Koch (op. cit., Fig. 10 and 11) shows long hairs on antennae of both alate and 
apterous females but describes (p. 8) ‘‘antennae without bristles.” 
