116 



HENRY SKINNER, EDITOR. 



marbled with black ; nectaries black pointed inwards ; wings hyaline, stigma pale 

 gray; antennae black; beak falling a little short of middle coxae; anterior legs 

 pale ochreous, with black knees and tarsi ; four hind legs with femora and tarsi 

 black, tibia pale ochreous. Measurements in [i. : nectaries 300 long, 70 broad ; 

 cauda 170; marginal cell with substigmatal portion 300; poststigmatal 500; an- 

 tennal joints, (3.) 480, (4.) 260, (5.) 210, (6a.) 100, (6b.) 300. Joint 3 crowded 

 with sensoria, 25 or more ; 4 without sensoria. 



Apterous form stout, dull green (mounted specimens dark brown), clouded ob- 

 scurely with a darker blue green; nectaries black, directed outwards; legs 

 yellowish with black tarsi ; hind femora with distal half clouded with blackish. 

 The sides of the back exhibit some very small black spots. Antennae with the basal 

 half mostly pale yellowish, apical half black. Lateral tubercles as described in 

 M. neomexicanus. No capitate hairs. 



When I first saw this, I thought I had Phorodon, but none of the 

 specimens can possibly be referred to that genus. The insect is a 

 Myzus closely related to M. neomexicanus. It has a strong super- 

 ficial resemblance to Aphis gossypii, which Pergande records from 

 Hiimulus, but it can easily be distinguished by the numerous and 

 crowded sensoria on the third antennal joint, A. gossypii having 

 only five to seven. 



Nectarophora agrimoniella Ckll., ined.* 



on Agrimouia. Color green. 

 Nectarophora corallorhizae Ckll., ined.* 



on Corallorhiza multi flora. 

 Nectarophora solidagiuis ( Fabr.). 



on Solidago. 

 Nectarophora rudeckiarum (7fcZZ.,ined.* 



on Rudbeckia. Color green. 

 Nectarophora heleniella Ckll., ined.* 



on Helenium hoopesii. Color 

 green. 

 Nectarophora martini Ckll. ined.* Color 

 dark wine red ; immature 



forms with a bluish bloom. 

 Cauda ensiform ; nectaries 

 black; stigma tapering; fe- 

 mora with apical portion 

 black; third antennal joint 

 with at least 40 prominent 

 sensoria. 

 on Helenium, Frasera, Zygade- 

 nus, Eriogonum, Potentilla 

 and Ligusticum. 

 Macrosiphum rubicola Oestlund. 

 on Rubus strigosus. 



* Descriptions will appear in Canadian Entomologist. 



