﻿art. 
  20 
  THE 
  APHID 
  GENUS 
  AMPHOROPHORA 
  MASON 
  

  

  Antennal 
  measurements 
  

  

  33 
  

  

  Other 
  measurements 
  

  

  COTYPE 
  SPECIMENS 
  

  

  Apterous 
  viviparous 
  female. 
  — 
  Antennae 
  about 
  one 
  and 
  one-half 
  

   times 
  as 
  long 
  as 
  body, 
  light 
  colored, 
  distal 
  segments 
  imbricated, 
  III 
  

   with 
  7-20 
  sensoria, 
  all 
  on 
  basal 
  half, 
  not 
  in 
  a 
  straight 
  row. 
  Antennal 
  

   hairs 
  shorter 
  than 
  width 
  of 
  segment; 
  heavy, 
  not 
  pointed. 
  Antennal 
  

   tubercles 
  unusually 
  large. 
  Hairs 
  on 
  front 
  of 
  head 
  capitate. 
  Beak 
  

   reaching 
  second 
  coxae, 
  often 
  nearly 
  to 
  third. 
  Cornicles 
  light 
  colored, 
  

   rather 
  slender, 
  conspicuously 
  swollen, 
  somewhat 
  imbricated 
  at 
  tip. 
  

   Cauda 
  long, 
  broad, 
  conical, 
  not 
  constricted, 
  with 
  5-6 
  groups 
  of 
  lateral 
  

   hairs. 
  

  

  43328— 
  25t 
  3 
  

  

  