130 NINETEENTH REPORT STATE ENTOMOLOGIST OF MINNESOTA—I1Q22 
(46) APHIS ASCLEPIADIS Fitch, 1851 
Found on Asclepias cornutus and related plants. 
48. Division PARVISENSORIA. Secondary sensoria are usually 
large, equal in size, and fewer in number (4-12), arranged in a single 
row, or nearly so. This division may also be considered under two 
sections based on the position of the sensoria on certain segments: 
a: -Sensoria, present ion, Sezments:37to) 5... asces. ce oui alent nase es Section A 49 
b: Sensoria: restricted to. the third ssesmientij.. «iis rte areas ees Section B 50 
49. Section A. Sensoria or segments 3 and 4 or 3 to 5. The fol- 
lowing species occur in Minnesota: 
(47) APHIS LUTESCENS Monell, 1879 
Found on Asclepias syriaca. 
(48) APHIS SPIRAEAE Oestlund, 1887 
Found on Spiraea salicifolia. 
(49) APHIS IMPATIENTIS Thomas, 1878 
Found on Impatiens fulva. 
(50) APHIS MONARDAE Oestlund, 1887 
Found on Manarda fistulosa. 
(51) APHIS FRONDOSAE Oestlund, 1886 
Found on Bidens frondosa. 
(52) APHIS EUPATORIL Oestlund, 1886 
Found on Eupatorium perfoliatwm. 
50. Section B. Sensoria restricted to the third segment. 
(53) APHIS POMI DeGeer, 1773 
Found on apple and Graminaceae. 
(54) APHIS SALICICOLA (Thomas) Monell, 1879 
Found on the leaves of willow. 
(55) APHIS CERASIFOLIAE Fitch, 1855 
Found on chokecherry, Prunus virginiana. 
(56) APHIS FORBESI Weed, 1889 
Found on strawberry. 
(57) APHIS RUBICOLA Oéestlund, 1887 
Found on leaves of Rubus. 
(58) APHIS APARINES Fabricius, 1775 
Found on Galium aparine, twisting the leaves. 
(59) APHIS OENOTHERAE Oeéestlund, 1887 
Found on Oenothera. 
