24 BULLETIN 826, U. S. DEPARTMENT OF AGRICULTURE. 



Genus NEOPHYLLAPKIS Takahashi. 



1920. Ncophyllaphis Takahashi, Can. Ent., v. 52, p. 20. 

 Characters. — Cornicles slightly elevated. Antennas of six segments, with narrow, 

 transverse sensoria. Fore wings with media twice branched, hind wings with both 

 media and cubitus present. Cauda and anal plate rounded, cauda sometimes slightly 

 constricted. Oviparous females winged and possessing annular sensoria. Forms wax 

 secreting and living free on the plants. 



Type (monotypical), Neophyllaphis podocarpi Takahashi. 



Genus PHYLLAPHIS Koch. 

 Plate IV, FF, GG. 

 1857. Phyllaphis Koch, Die Pflanzenlause Aphiden, p. 24S. 



The well-known genus Ph}dlaphis Koch is represented by fagi*L., 

 but as indicated under Tamalia has been made to include species of 

 somewhat different structure. 



Characters. — Cornicles present as chitinized rings which are very slightly elevated on 

 low conical bases. Antennas of six segments, long and slender, minutely setose, sen- 

 soria narrowly oval. Fore wings with the media twice branched ; hind wings with both 

 media and cubitus faintly indicated. Cauda knobbed, anal plate slightly divided. 



Forms living upon the foliage, sometimes producing a curling of the leaves. Males 

 usually winged ; oviparous form apterous, producing several eggs. 



Type (monotypical), Aphis fagi L„ 



Genus TAMALIA n. gen. 

 Plate IV, HH, II. 



The genus Tamalia Baker is erected for Pemphigus coweni Ckll., 

 a species which has since been placed in Phyllaphis. It is, however, 

 quite distinct from the type of the genus and undoubtedly represents 

 a new genus. Mr. Theodore Pergande received this species, coweni, 

 from California and made some notes on the material, thinking, how- 

 ever, that it was a new species. He gave it a provisional name and 

 the new generic name here used. This name, as far as our knowledge 

 goes, never was published. Among the large number of new genera 

 conceived by Pergande this is one of the few valid ones and his man- 

 uscript name, therefore, is used here. 



Characters. — Cornicles present as mere flanges on low, broad, conical bases. Antennas 

 of six segments minutely setose and with narrow sensoria. Fore wings with media 

 once branched, hind wings with both media and cubitus present. Cauda and anal 

 plate both rounded. Abdominal wax plates present. 



Forms living in pseudogalls. Sexes sometimes both winged, oviparous form pro- 

 ducing several eggs. 



Type, Pemphigus coweni Ckll. 



Genus SHIV APHIS Das. 

 1918. ShivapMs Da?, Mem. Ind. Mus., vol. 6, p. 245. 



The genus Shivaphis was erected with celti Das as type, and celti is 

 evidently the species redescribed as CJiromaphis celticolens by Essig. 1 



1 Essig, E. O., and Kuwana, S. I. Some Japanese Aphididffi. In Proc. Cal. Acad. Sci., v. 8, no. 3, 

 p. 95, 1918. 



