﻿ART. 
  20 
  

  

  THE 
  APHID 
  GENUS 
  AMPHOROPHORA 
  MASON 
  

  

  35 
  

  

  Van 
  der 
  Goot 
  describes 
  the 
  oviparous 
  female 
  and 
  the 
  male. 
  

  

  Described 
  from 
  three 
  alate 
  viviparous 
  females 
  and 
  four 
  apterous 
  

   viviparous 
  females 
  taken 
  by 
  Dr. 
  Edith 
  M. 
  Patch 
  on 
  Onoclea 
  sensibilis 
  

   at 
  Orono, 
  Me., 
  July 
  21, 
  1922 
  (Maine 
  No. 
  172-22). 
  Paracotype 
  

   specimens 
  were 
  taken 
  by 
  T. 
  L. 
  Guyton 
  at 
  Inglenook, 
  Pa., 
  July 
  1, 
  1920 
  

   (Guyton 
  number 
  20-58), 
  by 
  Hayhurst 
  at 
  Sheridan, 
  N. 
  Y. 
  (Hayhurst 
  

   No. 
  209, 
  Pergande 
  No. 
  9986), 
  and 
  were 
  received 
  from 
  Takahashi 
  

   (Q 
  No. 
  22018). 
  

  

  Host 
  plants.— 
  Onoclea 
  sensibilis, 
  O. 
  struthiopteris, 
  Polystichum 
  

   species, 
  Asplenium 
  species. 
  

  

  Distribution. 
  — 
  United 
  States 
  (Maine, 
  New 
  York, 
  Pennsylvania, 
  

   Minnesota), 
  England, 
  Holland, 
  Russia, 
  Japan. 
  

  

  Cotypes— 
  Returned 
  to 
  Maine 
  Agricultural 
  Experiment 
  Station. 
  

   Paracotypes 
  deposited 
  in 
  U. 
  S. 
  National 
  Museum. 
  Cat. 
  No. 
  26373. 
  

  

  AMPHOROPHORA 
  MAXIMA, 
  new 
  species 
  

  

  Figs. 
  174-176 
  

  

  This 
  is 
  one 
  of 
  the 
  largest 
  species 
  of 
  Amphoropliora 
  I 
  have 
  seen. 
  We 
  

   have 
  only 
  a 
  single 
  alate 
  specimen 
  and 
  several 
  nymphs. 
  Like 
  rubicola 
  

   Oestlimd 
  the 
  cornicle 
  is 
  conspicuously 
  longer 
  than 
  segment 
  III, 
  but 
  

   it 
  can 
  be 
  distinguished 
  from 
  rubicola 
  by 
  its 
  light-colored 
  antennae 
  

   and 
  by 
  the 
  smaller 
  number 
  of 
  sensoria 
  on 
  III, 
  about 
  13-17. 
  The 
  

   wings 
  are 
  torn, 
  so 
  that 
  I 
  am 
  unable 
  to 
  determine 
  whether 
  or 
  not 
  it 
  

   has 
  a 
  dusky 
  spot. 
  

  

  Alate 
  viviparous 
  female. 
  — 
  Antennae 
  longer 
  than 
  the 
  body, 
  light 
  

   colored, 
  ends 
  of 
  segments 
  and 
  VI 
  darker, 
  hairs 
  about 
  as 
  long 
  as 
  

   width 
  of 
  segment, 
  III 
  with 
  13-17 
  sensoria 
  on 
  outer 
  side; 
  other 
  seg- 
  

   ments 
  inbricated; 
  length 
  of 
  segments 
  as 
  follows: 
  

  

  Antennal 
  tubercles 
  prominent. 
  Head 
  0.608 
  mm. 
  across 
  eyes. 
  

   Beak 
  reaching 
  third 
  coxae. 
  No 
  dorsal 
  tubercles 
  showing 
  on 
  head 
  

   or 
  prothorax. 
  Lateral 
  tubercles 
  present 
  on 
  prothorax 
  and 
  abdomen. 
  

   Cornicles 
  dark 
  colored, 
  1.056-1.072 
  mm. 
  long, 
  distinctly 
  reticulated 
  

   for 
  0.08-0.144 
  mm., 
  the 
  remainder 
  conspicuously 
  imbricated; 
  widest 
  

   diameter, 
  0.112-0.064 
  mm.; 
  flange, 
  0.08 
  mm. 
  Cauda 
  light 
  colored, 
  

   0.32 
  mm. 
  long, 
  rather 
  broad, 
  distinctly 
  constricted, 
  tip 
  somewhat 
  

   upturned. 
  

  

  Described 
  from 
  one 
  specimen 
  taken 
  on 
  salmon-berry 
  in 
  California 
  

   in 
  1911. 
  The 
  slide, 
  which 
  bears 
  a 
  number 
  of 
  very 
  young 
  nymphs 
  

   has 
  the 
  Pergande 
  number 
  124121. 
  Pergande's 
  notes 
  under 
  this 
  

   number 
  give 
  no 
  additional 
  data, 
  except 
  that 
  they 
  were 
  received 
  in 
  

   August. 
  

  

  Cotypes. 
  — 
  Deposited 
  in 
  U. 
  S. 
  National 
  Museum. 
  Cat. 
  No. 
  26378. 
  

  

  