150 NINETEENTH REPORT STATE ENTOMOLOGIST OF MINNESOTA—IQ22 
(136) PROCIPHILUS APPROXIMATUS Patch, 1917 
A very large form also found on ash. 
(137) PROCIPHILUS TESSELLATA (Fitch) Pergandi, 1912 
Winter host soft maple, summer host alder. 
132. Genus NEOPROCIPHILUS Patch, 1912. Type: Pemphigus 
attenuatus Osborn and Sirrine, 1893. Strongly covered with white 
matter ; living free on the host plant. 
(138). NEOPROCIPHILUS: ATTENUATUS (Osborn and Sirrine) 
Patch, 1912 
Found on the stems of Smilax. 
33. Tribe PEMPHIGINI. Antennae of migrant 6-jointed; in 
fundatrix 4-jointed; no wax glands on the head, or rarely so; media 
simple and hind wings with two oblique veins arising close together ; 
wax glands made up of a number of small, irregularly arranged, facets ; 
spring generations usually found in galls. The following genera are 
represented in Minnesota: 
a. Spur of the terminal segment short................ Genus PEMPHIGUS 134 
b. Spur of the terminal segment much longer than the basal part............ 
Genus MORDWILKOJA 135 
134. Genus PEMPHIGUS Hartig, 1837. Type: Aphis bursaria 
Linnaeus, 1758. Media of the fore wings simple; sensoria on the 
antennae transverse or oval, usually not extending around the segment ; 
spur very short. Spring generations are usually found ‘in galls or 
folds on leaves, and summer generations on roots of plants and on 
Compositae. The following species are known from Minnesota : 
(139) PEMPHIGUS BURSARIUS (Linnaeus) Hartig, 1841 is 
Found on Lombardy poplar, Populus nigra, in galls on the petiole. 
Rather plentiful around Minneapolis. 
(140) PEMPHIGUS POPULICAULIS Fitch, 1859 e 
Found in galls on the petiole of cottonwood; close to the bese of 
the leaf and with an oblique opening. 
(141) PEMPHIGUS POPULITRANSVERSUS Riley, 1879 
Found in galls on the middle of the petiole of cottonwcod leaves, 
with a small transverse opening. 
(142) PEMPHIGUS POPULIGLOBULI Fitch, 1859 
Found in a globular gall near the base of the leaf on belsam poplar. 
(143) PEMPHIGUS POPULIMONILIS Riley, 1879 
Found in small galls arranged in row along the midvein on the 
leaves of balsam poplar. (Thecabius Koch.) 
