138 NINETEENTH REPORT STATE ENTOMOLOGIST OF MINNESOTA—19Q22 
82. Genus DREPANAPHIS Del Guercio, 1909. Type: Siphono- 
phora acerifolii Thomas, 1878. The excessive length of the antennae, 
conspicuous dorsal tubercles with white flocculent patches, indicate a 
high development similar to what is found in the Macrosiphni. 
(88) DREPANAPHIS ACERIFOLII (Thomas) Del Guercio, 1909 
Rather common on the leaves of soft maple. 
83. Supertribe MACROSIPHEA. Size large or moderately large, 
with abdomen more or less pointed posteriorly ; antennae usually longer 
than the body ; spur of terminal segment very long ; sensilla on antennae 
and parts of the body with a glandular, globate, or spearshaped apex, 
sometimes only fingerlike and blunt; cornicles long and cylindrical, 
rarely short, sometimes swollen; reticulations on cornicles usually 
continuous and forming closed cells; cauda long and usually curved. 
The three tribes may be separated as follows: 
a. Frontal tubercles enlarged or swollen on the inner side and strongly reticu- 
lated'--sensilla. clobatetate os acctac reco ere one ret Tribe MYZINI 84 
b. Frontal tubercles not swollen on the inner side; cornicles very short..... 
Tribe MICROSIPHINI 90 
c. Cornicles long and cylindrical; sensilla on antennae spear-shaped.......... 
Tribe MACROSIPHINI 92 
84. Tribe MYZINI. Size moderately large to small; frontal tu- 
bercles with obvious swelling on the inner side, strongly reticulated 
and provided with glandular hairs like those on the antennae ; cornicles 
usually long and slender, cylindrical or slightly swollen apically. The 
Myzini partake in form both of the Aphidini and the Macrosiphini, 
but their glandular, capitate sensilla appear to be a distinct type that 
may be directly traced from the Callipterini, while the Macrosiphini 
are traced from the Calaphidini. The following genera are represented 
in Minnesota: 
a. Antennae usually shorter then the body; sensilla short in the aptera; 
latéral-tuberclesu-present...nsanctacce ee eter eet er Genus MYZUS_ 85 
b. Antennae longer than the body; sensilla short in aptera; no lateral 
tubercles present on the abdomen; spurea sometimes with sensoria on 
the “third segment =:28-. 2 Gace cate Cae eee Genus NEOMYZUS & 
ce. Antennze usually equal to or shorter than the body; sensilla long in the 
aptera: 10 Sensoria in Sputease...-ace een Genus CAPITOPHORUS 87 
d. Antennae much longer than the body; sensilla long in the larval forms; 
sensoria many and scattered on segments 3-5 in the migrant........... 
Genus CRYPTOMYZUS._ 88 
e. The swellings on the frontal tubercles are produced into projecting horn- 
like tubercles, best seen in the spurea............ Genus PHORODON 8&9 
