﻿26 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  67 
  

  

  Pergande 
  left 
  the 
  following 
  notes: 
  "Pale 
  yellow 
  and 
  slightly 
  

   pruinous. 
  Apex 
  of 
  antennal 
  joints 
  3-6 
  and 
  terminal 
  one-half 
  of 
  the 
  

   spur 
  blackish; 
  apex 
  of 
  tibiae 
  and 
  tarsi 
  dusky, 
  eyes 
  brown. 
  The 
  

   nectaries 
  are 
  sometimes 
  very 
  pale 
  brownish, 
  also 
  the 
  legs, 
  with 
  

   extreme 
  tip 
  of 
  nectaries 
  dusky." 
  

  

  Biology. 
  — 
  This 
  species 
  alternates 
  between 
  various 
  species 
  of 
  

   Ribes 
  and 
  such 
  plants 
  as 
  Sonchus, 
  Lactuca, 
  etc. 
  

  

  On 
  Ribes 
  it 
  occurs 
  on 
  the 
  leaves, 
  usually 
  on 
  the 
  underside, 
  often 
  

   causing 
  them 
  to 
  curl 
  and 
  cluster. 
  Sometimes 
  it 
  is 
  associated 
  with 
  

   Myzus 
  ribis 
  (Linnaeus). 
  It 
  is 
  probable 
  that 
  a 
  few 
  individuals 
  remain 
  

   throughout 
  the 
  year, 
  but 
  most 
  of 
  them 
  have 
  left 
  by 
  the 
  latter 
  part 
  

   of 
  July. 
  

  

  On 
  the 
  summer 
  hosts 
  it 
  is 
  very 
  numerous 
  on 
  the 
  leaves, 
  stem, 
  and 
  

   flower 
  heads. 
  It 
  produces 
  two 
  or 
  more 
  generations, 
  remaining 
  on 
  

   these 
  plants 
  until 
  late 
  autumn, 
  we 
  having 
  records 
  as 
  late 
  as 
  No- 
  

   vember 
  24, 
  and 
  on 
  a 
  potted 
  plant 
  of 
  Sonchus 
  as 
  late 
  as 
  January 
  24. 
  

  

  In 
  the 
  autumn 
  it 
  returns 
  to 
  Ribes, 
  where 
  the 
  eggs 
  are 
  laid. 
  The 
  

   earliest 
  record 
  we 
  have 
  in 
  this 
  country 
  of 
  the 
  sexual 
  forms 
  is 
  October 
  

   21, 
  and 
  females 
  have 
  been 
  found 
  until 
  late 
  in 
  November. 
  

  

  The 
  eggs 
  are 
  laid 
  on 
  the 
  twigs 
  of 
  currant 
  and 
  are 
  shining 
  black 
  in 
  

   color. 
  Van 
  der 
  Goot 
  found 
  nearly 
  mature 
  oviparous 
  females 
  on 
  

   Deutzia 
  crenata. 
  

  

  Miss 
  Jackson 
  reports 
  it 
  to 
  be 
  attacked 
  by 
  Empusa 
  (Entomophthora) 
  

   aphides 
  Hoffman 
  and 
  Empusa 
  {Triplosporium) 
  fresenii 
  Nowakowaki. 
  

   Theobald 
  found 
  it 
  in 
  the 
  crops 
  of 
  young 
  fowls. 
  

  

  Food 
  plants. 
  — 
  Ribes 
  species, 
  Sonchus 
  species, 
  Lactuca, 
  Lampsana 
  

   vulgaris, 
  Viburnum 
  opulus, 
  Ciclwrium 
  endivum, 
  Picris 
  hieracioides, 
  

   Taraxicum, 
  milkweed 
  (Swain), 
  Deutzia 
  crenata 
  (Van 
  der 
  Goot). 
  

  

  Distribution. 
  — 
  United 
  States, 
  Europe, 
  India, 
  Japan, 
  Argentina, 
  

   Brazil, 
  and 
  Porto 
  Rico. 
  

  

  Type. 
  — 
  Kaltenbach's 
  type 
  of 
  lactucae 
  is 
  undoubtedly 
  lost. 
  Speci- 
  

   mens 
  which 
  I 
  am 
  considering 
  as 
  typical 
  and 
  which 
  agree 
  with 
  

   descriptions 
  of 
  other 
  authors 
  are 
  in 
  the 
  United 
  States 
  National 
  

   Museum. 
  

  

  AMPHOROPHORA 
  DAVIDSONI, 
  new 
  species 
  

  

  Figs. 
  27-32, 
  and 
  139-141 
  

  

  Amphorophora 
  rubi 
  (Kaltenbach) 
  Swain 
  (not 
  rubi 
  Kaltenbach), 
  Univ. 
  Cal. 
  

   Pub., 
  vol. 
  3, 
  No. 
  1, 
  1919, 
  p. 
  54. 
  

  

  This 
  species 
  can 
  be 
  separated 
  from 
  closely 
  related 
  ones 
  on 
  Rubus 
  

   by 
  its 
  shorter 
  cornicles 
  which 
  are 
  subequal 
  with 
  III, 
  by 
  its 
  dark 
  

   antennae, 
  the 
  distal 
  segments 
  of 
  which 
  become 
  lighter, 
  by 
  its 
  long 
  

   antennal 
  hairs, 
  and 
  by 
  the 
  larger 
  number 
  of 
  sensoria 
  on 
  III, 
  34-42. 
  

  

  Mate 
  viviparous 
  female. 
  — 
  Antennae 
  about 
  equal 
  to 
  the 
  length 
  

   of 
  the 
  body, 
  III 
  dark, 
  the 
  other 
  segments 
  lighter, 
  hairs 
  very 
  con- 
  

   spicuous, 
  usually 
  longer 
  than 
  the 
  width 
  of 
  the 
  segment, 
  distal 
  seg- 
  

   ments 
  imbricated, 
  III 
  with 
  34-42 
  sensoria, 
  not 
  in 
  a 
  row. 
  Antennal 
  

  

  