78 NEW YORK STATE MUSEUM 
ee Length 1.5mm; dorsal plate deeply emarginate, the lobes 
produced laterally and roundly emarginate; reared from 
fleshy leat gallvongAmelanchier.. 2/0) =i es race oie 
canadensis Felt, C. a1859 
eee Length 1 mm; dorsal plate lobes diverging, rounded....... 
recurvata Felt; C. 361 
eeee Length .75 mm; dorsal plate roundly emarginate, the lobes 
hardly diverging, obliquely truncate............ wale paras 
fragariae Felt, C. 328 
dd Abdomen yellowish red, length .75 mm; dorsal plate short, tri- 
angularly emarginate, the lobes obliquely truncate; fifth 
antennal segment having the stems two and one-half and three 
times their diameters........emarginata Felt, C. 421, 34 
ddd Abdomen dark brown, length 1 mm; dorsal fifth antennal seg- 
ment having the stems three and four and one-half times their 
Giametersy i tainet sees oe tet oe ruricola Felt, C. 293 
bb Ventral plate deeply and roundly emarginate, the lobes not diverging 
strongly 
c Fifth antennal segment having the stems equal or nearly so 
d Lobes of the ventral plate diverging apically : 
e Abdomen dark brown, length 1 mm; fifth antennal segment 
having the stems each with a length three and one-half 
times its diameter.......... apicalis Felt, C. 409, 367 
dd Lobes of the ventral plate nearly parallel, not diverging apically 
e Lobes of the dorsal plate not strongly diverging 
f Lobes of ventral plate slender 
g Abdomen pale yellowish orange or yellowish brown, 
length 1 mm; fifth antennal segment having the 
stems each with a length three and one-half 
timesptskdiametensan. 5.25 saree an aCe ee 
agraria Felt, C. 247, 621, 626, 632 
gg Abdomen dark yellowish brown, length .75 mm; 
fifth antennal segment having the stems with a 
length three and three and one-half times their 
diametersse maa: ce ae terrestris Belt (Ci 379 
ggg Abdomen dull red, length 1 mm; fifth antennal seg- 
ment having the stems each with a length three 
and one-half times their diameter; fourth palpal 
sepment as\long as thei third) 3 .5..5-050e eee 
sanguinia Felt, C. 385 
gggg Abdomen reddish orange, length 1 mm; fifth anten- 
nal segment having the stems each with a length 
two and one-half times their diameters; fourth 
palpal segment one-fourth longer than the third; 
reared) fromuanvappleyap hides wien 
aphidivora Felt, a2316a 
ff Lobes of ventral plate short, stout 
g Abdomen dark brown, length 2 mm; fifth antennal 
segment, stems each with a length two and one- 
half: timesvitsidiameters 5.) cn see eee ee ae 
apralis Belt iC. 144 
