﻿U. 
  S. 
  D. 
  A., 
  B. 
  E. 
  Bui. 
  116, 
  Part 
  III. 
  D. 
  F. 
  I. 
  I., 
  Issued 
  January 
  31, 
  ,1913. 
  

  

  PAPERS 
  ON 
  DECIDUOUS 
  FRUIT 
  INSECTS 
  AND 
  INSECTICIDES. 
  

  

  THE 
  CHERRY 
  FRUIT 
  SAWFLY. 
  

  

  (Hoplocampa 
  cookei 
  [Clarke]). 
  

  

  By 
  S. 
  W. 
  Foster, 
  

  

  Entomological 
  Assistant. 
  

  

  INTRODUCTION. 
  

  

  The 
  cherry 
  fruit 
  sawfly 
  is 
  an 
  insect 
  comparatively 
  little 
  known 
  to 
  

   science. 
  It 
  was 
  first 
  described 
  by 
  Prof. 
  W. 
  T. 
  Clarke 
  in 
  the 
  Cana- 
  

   dian 
  Entomologist, 
  volume 
  38, 
  No. 
  11, 
  page 
  353, 
  under 
  the 
  name 
  

   Dolerus 
  cookei. 
  In 
  1910 
  specimens 
  of 
  this 
  species 
  were 
  brought 
  to 
  

   the 
  attention 
  of 
  Mr. 
  S. 
  A. 
  Rohwer, 
  of 
  the 
  Bureau 
  of 
  Entomology, 
  

   who 
  referred 
  it 
  to 
  the 
  genus 
  Hoplocampa. 
  As 
  he 
  was 
  unfamiliar 
  

   with 
  the 
  type 
  of 
  cookei, 
  he 
  considered 
  that 
  it 
  represented 
  an 
  unde- 
  

   scribed 
  species, 
  for 
  this 
  latter 
  was 
  destroyed 
  in 
  the 
  insect 
  collections 
  

   by 
  the 
  San 
  Francisco 
  fire. 
  Mr. 
  Rohwer, 
  however, 
  as 
  a 
  result 
  of 
  the 
  

   examination 
  of 
  abundant 
  material, 
  has 
  come 
  to 
  the 
  conclusion 
  that 
  

   his 
  and 
  Clarke's 
  species 
  are 
  the 
  same 
  insect, 
  which 
  should 
  now 
  be 
  

   known 
  under 
  the 
  name 
  of 
  Hoplocampa 
  cookei 
  (Clarke) 
  . 
  Mr. 
  Rohwer's 
  

   description 
  of 
  the 
  species 
  as 
  Hoplocampa 
  californica 
  is 
  given 
  herewith, 
  

   as 
  taken 
  from 
  Technical 
  Series 
  No. 
  20, 
  Part 
  IV, 
  of 
  this 
  bureau, 
  page 
  

   143: 
  

  

  Female. 
  — 
  Length 
  3.5 
  mm. 
  Clypeus 
  broadly, 
  shallowly, 
  angulately 
  emarginate, 
  

   lobes 
  broad, 
  obtusely 
  triangular; 
  supraclypeal 
  area 
  convex, 
  finely 
  granular; 
  antennal 
  

   furrows 
  waDting, 
  antennal 
  foveae 
  small; 
  middle 
  fovea 
  elongate, 
  shallow, 
  not 
  well 
  

   defined; 
  ocellar 
  depression 
  small, 
  distinct, 
  not 
  sharply 
  defined; 
  postocellar 
  area 
  well 
  

   defined 
  on 
  all 
  sides; 
  head 
  and 
  mesoscutum 
  with 
  small, 
  separate, 
  well-defined 
  punc- 
  

   tures; 
  antennae 
  rather 
  slender, 
  third 
  and 
  fourth 
  joints 
  equal; 
  sheath 
  slightly 
  concave 
  

   above, 
  slender, 
  convex 
  below 
  from 
  apex; 
  cerci 
  short, 
  stout; 
  stigma 
  broadest 
  near 
  base, 
  

   strongly 
  tapering 
  to 
  apex; 
  transverse 
  radius 
  strongly 
  oblique, 
  in 
  apical 
  third 
  cell; 
  

   third 
  cubital 
  cell 
  longer 
  than 
  first 
  and 
  second 
  combined. 
  Black; 
  clypeus, 
  labrum, 
  

   mandibles 
  (except 
  piceous 
  apices), 
  orbits, 
  occiput 
  (except 
  postocellar), 
  teguhe, 
  

   anterior 
  legs 
  (except 
  coxae), 
  intermediate 
  femora, 
  and 
  part 
  of 
  posterior 
  femora 
  reddish 
  

   yellow; 
  posterior 
  femora 
  in 
  part, 
  most 
  of 
  four 
  hind 
  tibia', 
  and 
  tarsi 
  black 
  or 
  brownish; 
  

   wingB 
  hyaline, 
  iridescent; 
  venation 
  pale 
  brown, 
  stigma 
  in 
  part 
  pallid. 
  

  

  Paratopotypes 
  show 
  that 
  the 
  four 
  hind 
  logs 
  may 
  be 
  mostly 
  black, 
  the 
  posterior 
  

   orbits 
  pale 
  and 
  the 
  pale 
  spots 
  of 
  the 
  occiput 
  reduced 
  in 
  Bize. 
  

  

  •6713°— 
  13 
  73 
  

  

  