No. 34-] HEMIPTERA OF CONNECTICUT: APHIDIDAE. 275 



Calaphis Walsh. 



Cornicles present, distinct, truncate; antennae of six segments 

 armed with oval sensoria and placed on more or less distinct 

 antennal tubercles. Fore wing with the media twice branched, the 

 radial sector either absent or faintly indicated, sometimes, however, 

 complete ; hind wing with both media and cubitus present. Cauda 

 distinctly knobbed, anal plate bilobed. 



Forms more or less solitary upon the foliage ; sexes not markedly 

 different from the other forms; oviparous female producing 

 several eggs and possessing sensoria upon the antennae. 



Key to Species. 



1. Unguis of segment vi of antenna between two and three times as 



long as base 2 



Unguis of segment vi four times or more as long as base 4 



2. Head and thorax not striped longitudinally 3 



Head and thorax longitudinally striped with black; all wing veins 



heavily bordered with black or dark brown betuella 



3. Transverse bands upon the abdomen as well as the cornicles black 



or dark brown ; unguis of segment vi shorter than width of head 



across the eyes annulata 



Abdomen without such dark markings ; cornicles yellow ; unguis 



of segment vi longer than width of head across the eyes 



betulaecolens 



4. Antennae uniform dusky or black with the exception sometimes of 



i and ii and the basal portion of iii 5 



Antennae alternately banded with yellow and black ; media thinner 

 than other veins of wing; unguis of segment vi about five times 

 as long as base castaneoides 



5. Unguis of segment vi about four times as long as base 6 



Unguis of segment vi about six times as long as base; media 



about the same as other veins of the wing alni 



6. Media thinner than other veins of wing, with the radial sector 



faintly indicated castaneae 



All veins of the wing about the same and bordered with brown; 

 radial sector totally absent myricae n. sp. 



C. myricae Patch, n. sp. 



This conspicuous aphid is very common on sweet fern (Myrica 

 asplenifolia) in the vicinity of Orono, Maine, and has been held in 

 the collection under the manuscript name of Calaphis myrica since 

 1906, when it was first taken. The body of both the apterous and 

 alate females is green. The cornicles are black throughout or else 

 green at the base and black at the tip. 



Alate viviparous female : Relative lengths of the antennal seg- 

 ments iii to vi indicated by 20, 14, 12, 4+ 17. Segment iii has 

 from about twenty to twenty- four sensoria extending in a some- 

 what irregular row, the basal one-sixth and the distal one-fourth 

 of segment without sensoria. Frontal tubercle prominent, nearly 

 as long on the inner margin as the inner margin of segment i of 

 antenna. Veins of fore wing heavy and about uniformly shaded 

 with dark brown. Radial sector absent. Cauda as long as 



