144 NINETEENTH REPORT STATE ENTOMOLOGIST OF MINNESOTA—IQ22 
(120) AMPHOROPHORA AMPULLATA Buckton, 1876 
What is considered to be this species was once taken at Minne- 
apolis on the Ostrich fern, but has not since been seen and may 
have been an escaped form from some greenhouse; sensilla on 
antennae short and small. 
104. Subtribe PENTALONII. The Pentalonii have certain ab- 
normalities in venation and otherwise that separate them from the 
typical Macrosiphii. A very interesting biological question is asso- 
ciated with this peculiarity of tropical or subtropical forms. One 
representative is known from Minnesota: 
a. Hind wings much reduced and without oblique veins.................... 
Genus MICROPARSUS 105 
105. Genus MICROPARSUS Patch, 1909. Type: Microparsus 
variabilis Patch, 1909. A peculiar genus characterized by the media 
of the fore wings with only one branch, and by the reduced hind 
wings with only a stump of an oblique vein or altogether wanting. 
(121) MICROPARSUS VARIABILIS Patch, 1909 
Found on tick trefoil or Desmodium. 
106. Subfamily PEMPHIGINAE. Specialized Aphididae in 
which the typical Aphidian characters are specialized in the line of 
reduction or loss, as seen in the number of segments to the antennae, 
in the spur, sensilla, and sensoria; reduction in venation is also carried 
further in this subfamily than in the preceding. The subfamily is 
typically subterraneous or protected in habitat, and found in folds 
of leaves, in crevices of bark, or in galls. Positive pemphigian char- 
acters are seen in the position of the antennae and in the great develop- 
ment of the dermal glands. The antennae are usually shorter than 
half the length of the body, and inserted on the under side of the head 
in depressions not seen from above; sensoria are often crowded and 
therefore usually transverse or annulate; media of the fore wings 
usually simple, or with one branch, rarely with two branches ; cornicles 
very short and appear as pores, or are wanting. It may be noticed 
that in Lachnea the antennae are inserted on the sides of the head in 
front of the eyes, in the Aphidea and the Macrosiphea lines they tend 
to become dorsal, while in the Pemphiginae they have moved to a 
ventral position. Only one series is recognized : 
a.” The Mindarea=Pemphigea - series. 22): car. enacts a ie te ene ere ee 107 
107. Series MINDAREA-PEMPHIGEA. The characters of the 
series are the same as those for the subfamily. The following super- 
tribes are at present recognized : 
