﻿art. 
  20 
  THE 
  APHID 
  GENUS 
  AMPHOROPHORA 
  MASON 
  9 
  

  

  AMPHOROPHORA 
  ALNI, 
  new 
  species 
  

  

  Figs. 
  1-3 
  

  

  Apterous 
  viviparous 
  female. 
  — 
  Antennae 
  longer 
  than 
  body, 
  slender; 
  

   hairs 
  shorter 
  than 
  width 
  of 
  segments, 
  one 
  to 
  three 
  small 
  sensoria 
  

   near 
  base 
  of 
  III, 
  antennal 
  measurements 
  as 
  follows: 
  

  

  Antennal 
  tubercles 
  large 
  and 
  prominent. 
  Capitate 
  hairs 
  present 
  

   on 
  vertex 
  and 
  on 
  basal 
  antennal 
  segments. 
  Beak 
  reaching 
  third 
  

   coxae. 
  Cauda 
  long, 
  broad, 
  not 
  constricted, 
  with 
  two 
  sets 
  of 
  lateral 
  

   hairs. 
  Cornicles 
  very 
  long, 
  moderately 
  swollen 
  on 
  distal 
  half, 
  dis- 
  

   tinctly 
  reticulate 
  at 
  tip. 
  

  

  Last 
  Instar 
  Apterous 
  Nymph 
  

  

  Described 
  from 
  specimens 
  submitted 
  by 
  Miss 
  Patch, 
  taken 
  at 
  

   Orono, 
  Me., 
  on 
  Alnus 
  incana, 
  August 
  7, 
  1916 
  (Maine 
  No. 
  127-16). 
  

   Three 
  apterous 
  viviparous 
  females 
  and 
  several 
  nymphs. 
  No 
  alates. 
  

  

  