134 NINETEENTH REPORT STATE ENTOMOLOGIST OF MINNESOTA—I922 
65. Genu QUIPPELACHNUS gen. nov. Type: Euceraphis gil- 
lettei Davidson, 1915. Spur of terminal antennal segment shorter than 
the base; stigmal vein distinct; cornicles swollen or bulging at base. 
Habitat Alnus. 
(7o) QUIPPELACHNUS GILLETTEI (Davidson) 
A conspicuous western and northern form with tufts of flocculent 
strands on body and legs. 
66. Genus EUCERAPHIS Walker, 1870. Type: Aphis betulae 
Koch. Spur shorter than the base; stigmal vein distinct; cornicles 
cylindrical; anal plate usually entire. 
(71) EUCERAPHIS BETULAE (Koch) 
Sensoria on the third joint, crowded on the enlarged basal part. 
Found on Betula. 
(72) EUCERAPHIS ALNIFOLIAE (Fitch) 
Sensoria not crowded. Found on Alnus. 
67. Genus. CALLIPTERINELLA- Van der Goot, 1913.) bype= 
Aphis betularius Kaltenbach, 1843. Spur of the antennae longer than 
the base; stigmal vein indistinct on the basal half or more; cornicles 
cylindrical. 
(73) CALLIPTERINELLA BETULAECOLENS (Fitch) 
Rather common on Betula, 
68. Tribe CALLIPTERINI. Size moderate to small; cornicles 
short and truncate; cauda globate at apex; antennae with the spur 
shorter or much longer than the base. This large and interesting 
tribe has long been a favorite with aphidologists: Their classification 
is still unsatisfactory, but of great phylogenetic value as it gives a 
picture of a very remote condition of the family that has become 
lost by all the other tribes. The following subtribes are represented in 
Minnesota: 
a. Found on woody parts of trees (Corticola group)..Subtribe SYMYDOBII 69 
b. Found on leaves of walnut and hickory (Juglans-Myrica group).......... 
Subtribe PANAPHIDII 71 
c. Found on leaves of linden and oak (Tilia-Quercus group)................ 
Subtribe CALLIPTERII 76 
69. Subtribe SYMYDOBII. Corticola group. Antennae about as 
long as the body; spur of the terminal segment about equal to the 
base; cornicles short and truncate and cauda slightly emarginated ; 
abdomen with lateral tubercles and rather hairy; sensilla spine-like. 
A genus that stands midway between the Chaitophorea and the Callip- 
terea but is usually considered to belong to the latter. 
a> With characters “of thepsubtribe..... Ses «ns cmen se Genus SYMYDOBIUS 70 
