﻿REVISION 
  OF 
  TRIBE 
  CERESINI 
  CALDWELL 
  521 
  

  

  YOTHERS, 
  M. 
  A. 
  

  

  1934. 
  Biology 
  and 
  control 
  of 
  the 
  tree 
  hoppers 
  injurious 
  to 
  fruit 
  trees 
  in 
  the 
  

   Pacific 
  Northwest. 
  U. 
  S. 
  Dept. 
  Agr. 
  Tech. 
  Bull. 
  402, 
  46 
  pp. 
  

   YoTHEKs, 
  M. 
  A., 
  and 
  Allen, 
  P. 
  B., 
  Jr. 
  

  

  1941. 
  Observations 
  on 
  the 
  biology 
  and 
  control 
  of 
  the 
  treehopper 
  Heliria 
  

   praealta 
  (Fowler) 
  in 
  orchards 
  of 
  the 
  Pacific 
  Northwest. 
  U. 
  S. 
  Dept. 
  

   Agr, 
  Circ. 
  606, 
  13 
  pp. 
  (footnote 
  p. 
  1). 
  

  

  ABBREVIATIONS 
  USED 
  ON 
  PLATES 
  

  

  Each 
  illustration 
  bears 
  the 
  name 
  of 
  the 
  species 
  and 
  is 
  accompanied 
  

   by 
  key 
  letters 
  designating 
  the 
  structure 
  that 
  is 
  illustrated. 
  The 
  key 
  

   is 
  as 
  follows: 
  

  

  A=Aedeagus; 
  left 
  lateral 
  aspect. 
  

  

  C=Aedeagus 
  with 
  style 
  attached; 
  left 
  lateral 
  aspect. 
  

  

  G 
  = 
  Genital 
  capsule; 
  left 
  lateral 
  aspect. 
  

  

  L= 
  Style; 
  left 
  lateral 
  aspect, 
  usually 
  of 
  apical 
  portion 
  only. 
  

  

  = 
  Aedeagus; 
  dorsal 
  aspect 
  of 
  ventroposterior 
  arm. 
  

  

  P=Aedeagus; 
  posterior 
  aspect, 
  sometimes 
  of 
  apical 
  portion 
  only. 
  

  

  T 
  = 
  Tooth 
  of 
  lateral 
  valve; 
  left 
  lateral 
  aspect 
  except 
  festinus, 
  which 
  is 
  from 
  

  

  the 
  posterior 
  aspect. 
  

   V= 
  Style; 
  left 
  ventral 
  aspect, 
  usually 
  apical 
  portion 
  only. 
  

   Y= 
  Lateral 
  valve; 
  left 
  lateral 
  aspect, 
  sometimes 
  with 
  pygofer 
  included. 
  

  

  