﻿art. 
  20 
  THE 
  APHID 
  GENUS 
  AMPHOROPHORA 
  MASON 
  61 
  

  

  The 
  alate 
  male 
  and 
  oviparous 
  females 
  just 
  described 
  were 
  taken 
  

   by 
  Dr. 
  A. 
  C. 
  Baker 
  on 
  wild 
  raspberry. 
  No 
  viviparous 
  forms 
  were 
  

   taken, 
  but 
  I 
  feel 
  certain 
  that 
  the 
  specimens 
  must 
  belong 
  to 
  this 
  

   species. 
  

  

  Biology. 
  — 
  But 
  little 
  is 
  known 
  of 
  the 
  biology 
  of 
  this 
  species. 
  It 
  is 
  

   found 
  on 
  the 
  leaves 
  and 
  shoots 
  of 
  various 
  species 
  of 
  Rubus. 
  Dr. 
  

   Edith 
  M. 
  Patch 
  took 
  an 
  alate 
  female 
  with 
  eight 
  nymphs 
  on 
  wild 
  red 
  

   raspberry 
  on 
  August 
  1, 
  1906, 
  in 
  Maine. 
  In 
  Minnesota 
  Pergande 
  

   took 
  apterous 
  females 
  and 
  nymphs 
  on 
  July 
  14, 
  1903. 
  In 
  California 
  

   Shinji 
  took 
  alate 
  and 
  apterous 
  viviparous 
  females 
  on 
  March 
  20, 
  1915, 
  

   at 
  Berkeley; 
  Essig 
  found 
  them 
  at 
  the 
  same 
  place 
  on 
  March 
  29, 
  1916, 
  

   at 
  which 
  time 
  "there 
  were 
  also 
  a 
  number 
  of 
  young 
  pink 
  forms 
  not 
  

   observed 
  during 
  the 
  summer"; 
  he 
  also 
  found 
  the 
  species 
  abundant 
  

   on 
  May 
  24, 
  1916; 
  Davidson 
  took 
  them 
  in 
  the 
  hilly 
  canyons 
  of 
  Contra 
  

   Costa 
  County, 
  on 
  May 
  13, 
  1913 
  — 
  "at 
  that 
  date 
  about 
  95 
  per 
  cent 
  

   of 
  the 
  lice 
  were 
  large 
  pupae 
  or 
  recently 
  transformed 
  adults." 
  Ross 
  

   took 
  alate 
  and 
  apterous 
  forms 
  at 
  Ottawa, 
  Canada 
  on 
  July 
  21, 
  1917, 
  

   and 
  Wilson 
  at 
  Vancouver, 
  British 
  Columbia, 
  on 
  July 
  12, 
  1915. 
  

  

  Shinji 
  took 
  his 
  males 
  at 
  Berkeley, 
  Calif., 
  on 
  April 
  4, 
  1915. 
  Oest- 
  

   lund 
  found 
  them 
  in 
  Minnesota 
  "as 
  late 
  as 
  November 
  first, 
  together 
  

   with 
  the 
  oviparous 
  wingless 
  females." 
  Baker 
  took 
  the 
  sexes 
  de- 
  

   scribed 
  above 
  at 
  Guelph, 
  Ontario, 
  October 
  10, 
  1910. 
  

  

  Distribution. 
  — 
  From 
  Maine 
  to 
  California; 
  Ottawa 
  and 
  British 
  

   Columbia. 
  

  

  Host. 
  — 
  Rubus. 
  

  

  Cotype. 
  — 
  Oestlund's 
  collection. 
  

  

  AMPHOROPHORA 
  SENSORIATA 
  Mason 
  

  

  Figs. 
  158-163 
  

  

  Am-phorophora 
  sensoriata 
  Mason, 
  Proc. 
  Ent. 
  Soc. 
  Wash., 
  vol. 
  25, 
  No. 
  9, 
  

   1923, 
  p. 
  1SS. 
  

  

  As 
  explained 
  under 
  rubi 
  Kaltenbach, 
  this 
  is 
  the 
  species 
  mentioned 
  

   by 
  Gillette 
  as 
  differing 
  from 
  rubi. 
  It 
  seems 
  to 
  be 
  rather 
  common 
  on 
  

   this 
  continent 
  and 
  has 
  no 
  doubt 
  often 
  been 
  confused 
  with 
  rubi. 
  

   So 
  far 
  as 
  I 
  know, 
  it 
  is 
  not 
  found 
  in 
  Europe, 
  the 
  type 
  continent 
  of 
  

   rubi 
  Kaltenbach. 
  

  

  It 
  is 
  easily 
  distinguished 
  from 
  rubi 
  by 
  the 
  sensoria 
  on 
  IV 
  and 
  V 
  

   of 
  the 
  alate, 
  by 
  the 
  larger 
  number 
  of 
  sensoria 
  on 
  III 
  in 
  both 
  the 
  

   alate 
  and 
  apterous 
  forms, 
  by 
  the 
  shorter 
  hairs 
  on 
  the 
  antenna, 
  by 
  

   the 
  shorter 
  cornicles, 
  and 
  by 
  the 
  smaller 
  number 
  of 
  hairs 
  on 
  the 
  

   cauda. 
  

  

  Alate 
  viviparous 
  female. 
  — 
  Large 
  species. 
  General 
  color 
  green. 
  

   Antennae 
  longer 
  than 
  body, 
  dark 
  colored, 
  imbricated, 
  hairs 
  incon- 
  

   spicuous, 
  much 
  smaller 
  than 
  in 
  rubi, 
  numerous 
  sensoria 
  on 
  III, 
  IV, 
  

   and 
  some 
  on 
  V. 
  Antennal 
  tubercles 
  large. 
  Beak 
  very 
  short, 
  in 
  

  

  