﻿AKT. 
  20 
  

  

  THE 
  APHID 
  GENUS 
  AMPHOROPHORA 
  MASON 
  

  

  73 
  

  

  Pergande 
  left 
  the 
  following 
  note: 
  

  

  "5591? 
  Rhop.lactucaef 
  December 
  4.94. 
  Found 
  one 
  winged 
  male 
  

   on 
  under 
  side 
  of 
  leaf 
  of 
  turnip, 
  which 
  may 
  belong 
  to 
  this 
  species. 
  

   Dark 
  parts 
  black; 
  light 
  parts 
  yellow. 
  Pro 
  thorax 
  in 
  front 
  and 
  behind 
  

   orange; 
  base 
  and 
  end 
  of 
  abdomen 
  orange, 
  rest 
  yellow, 
  six 
  dusky 
  

   transv. 
  medio-dorsal 
  spots; 
  lateral 
  spots 
  black. 
  Mounted 
  in 
  balsam." 
  

  

  Quaintance 
  No. 
  22023, 
  Bragg 
  No. 
  117 
  

  

  Taken 
  on 
  grass 
  at 
  Marblehead, 
  Mass., 
  October 
  11, 
  1920, 
  by 
  L. 
  C. 
  

   Bragg. 
  

  

  Alate 
  Male. 
  — 
  Antennae 
  dark 
  colored, 
  very 
  tuberculate. 
  Hairs 
  

   long, 
  heavy, 
  conspicuous. 
  Antennal 
  tubercles 
  very 
  short. 
  Beak 
  

   reaching 
  second 
  coxae. 
  No 
  prothoracic 
  or 
  abdominal 
  tubercles 
  

   showing. 
  Cornicles 
  long, 
  moderately 
  swollen, 
  dark 
  colored, 
  lighter 
  

   at 
  base, 
  inconspicuously 
  reticulate 
  at 
  tip. 
  Cauda 
  long, 
  slender, 
  

   constricted. 
  Measurements 
  as 
  follows: 
  

  

  Antennal 
  measurements 
  

  

  Other 
  measurements 
  

  

  Last 
  instar 
  nymph 
  

  

  43328— 
  25f- 
  

  

  VI 
  

  

  0. 
  08 
  + 
  0. 
  784 
  

   0. 
  08+ 
  ? 
  

  

  Head 
  

  

  0. 
  608 
  

  

  Cornicle 
  

   length 
  

  

  0. 
  416 
  

   0. 
  416 
  

  

  Cornicle 
  

   width 
  

  

  0. 
  096 
  

   0. 
  112 
  

  

  