﻿PA.CKARD,] 
  

  

  PARASITES 
  OF 
  THE 
  LOCDST. 
  

  

  661 
  

  

  end 
  is 
  divided 
  into 
  two 
  portions, 
  of 
  whicli 
  the 
  upper 
  forms 
  a 
  slope, 
  on 
  the 
  lower 
  edge 
  

   of 
  which 
  are 
  situated 
  six 
  acute 
  tubercles, 
  of 
  which 
  the 
  three 
  lower 
  are 
  the 
  larger. 
  In 
  

   the 
  center 
  of 
  the 
  sloj)e 
  are 
  two 
  small, 
  prominent 
  spiracles, 
  or 
  breathing-holes. 
  Below 
  

   this 
  slope 
  is 
  a 
  transverse 
  ridge, 
  from 
  which 
  arise 
  three 
  sharp 
  tubercles 
  situated 
  above 
  

   the 
  large 
  anal 
  tubercle 
  or 
  foot. 
  Length 
  about 
  a 
  third 
  (0.30) 
  of 
  an 
  inch. 
  

  

  I 
  adopt 
  Professor 
  Eiley's 
  identification 
  of 
  this 
  maggot. 
  

  

  Oar 
  figure 
  is 
  not 
  drawn 
  from 
  specimens 
  taken 
  in 
  this 
  country, 
  but 
  

   copied 
  from 
  Curtis's 
  Farm 
  Insects. 
  It 
  is 
  sufficiently 
  accurate, 
  however, 
  

   to 
  represent 
  our 
  form. 
  

  

  Professor 
  Eiley 
  says 
  that 
  this 
  maggot 
  "is 
  quite 
  common, 
  and 
  has 
  

   been 
  found 
  in 
  Minnesota, 
  Iowa, 
  Nebraska, 
  various 
  parts 
  of 
  Kansas, 
  

   Missouri, 
  and 
  even 
  Texas. 
  It 
  has 
  destroyed, 
  in 
  many 
  instances,- 
  as 
  many 
  

   as 
  10 
  per 
  cent, 
  of 
  them." 
  These 
  small 
  maggots 
  are 
  found 
  in 
  the 
  locust- 
  

   egg 
  pods, 
  either 
  singly 
  or 
  in 
  varying 
  numbers, 
  there 
  sometimes 
  being 
  a 
  

   dozen 
  packed 
  together 
  in 
  the 
  same 
  jjod. 
  They 
  exhaust 
  the 
  juices 
  of 
  the 
  

   eggs 
  and 
  leave 
  nothing 
  but 
  the 
  dry 
  and 
  discolored 
  shells, 
  and 
  when 
  

   they 
  are 
  not 
  numerous 
  enough 
  to 
  destroy 
  all 
  the 
  eggs 
  in 
  the 
  pod, 
  their 
  

   work, 
  in 
  breaking 
  open-a 
  few, 
  often 
  causes 
  ail 
  the 
  others 
  to 
  rot. 
  

  

  " 
  VVhen 
  fed 
  to 
  repletion, 
  this 
  maggot 
  contracts 
  to 
  a 
  little 
  cylindrical 
  

   yellowish-brown 
  pupa 
  [case], 
  about 
  half 
  the 
  length 
  of 
  the 
  outstretched 
  

   and 
  full-grown 
  larva, 
  and 
  rounded 
  at 
  both 
  ends. 
  From 
  this 
  pupa 
  [-case] 
  

   in 
  the 
  course 
  of 
  a 
  week 
  in 
  warm 
  weather, 
  and 
  longer 
  as 
  the 
  weather 
  is 
  

   colder, 
  there 
  issues 
  a 
  small 
  grayish, 
  two-winged 
  fly, 
  about 
  one-fifth 
  of 
  

   an 
  inch 
  long, 
  the 
  wings 
  expanding 
  about 
  one-third 
  of 
  an 
  inch, 
  and 
  in 
  

   general 
  appearance 
  resembling 
  a 
  diminutive 
  house-fly. 
  

  

  The 
  common 
  jUsli-fly 
  [Bar 
  eophaga 
  carnaria, 
  Plate 
  LXIV, 
  Figs. 
  1-3). 
  — 
  The 
  

   maggot 
  (Plate 
  LXiV, 
  Fig. 
  1) 
  of 
  this 
  fly 
  also 
  feeds 
  on 
  the 
  eggs, 
  but 
  prob- 
  

   ably 
  on 
  those 
  which 
  are 
  addled. 
  It 
  is 
  larger 
  than 
  the 
  Anthomyia 
  mag- 
  

   got, 
  with 
  no 
  spines 
  around 
  the 
  end 
  of 
  the 
  body 
  ; 
  and 
  the 
  pupa-case 
  

   (Plate 
  LXiy, 
  Fig. 
  2, 
  enlarged) 
  is 
  much 
  larger, 
  truncate 
  at 
  the 
  end, 
  and 
  

   tapering 
  toward 
  the 
  headend. 
  I 
  have 
  received 
  two 
  specimens, 
  half- 
  

   grown, 
  of 
  the 
  maggots 
  of 
  this 
  species, 
  taken 
  from 
  the 
  abdomen 
  of 
  a 
  locust 
  

   [G. 
  spretus) 
  on 
  the 
  Vermejo 
  Eiver, 
  New 
  Mexico, 
  June 
  29, 
  by 
  Lieut. 
  W. 
  

   L. 
  Carpenter, 
  U. 
  S. 
  A. 
  

  

  The 
  two-lined 
  Telephorus 
  gruh. 
  — 
  I 
  have 
  also 
  received 
  from 
  Mr. 
  Whit- 
  

   man, 
  of 
  Saint 
  Paul, 
  Minn., 
  a 
  specimen 
  of 
  the 
  larva 
  of 
  Telephorus 
  hilinea- 
  

   tus, 
  said 
  by 
  him 
  to 
  be 
  destructive 
  to 
  the 
  locust. 
  I 
  add 
  a 
  description 
  

   copied 
  from 
  ray 
  first 
  report 
  as 
  State 
  entomologist 
  of 
  Massachusetts. 
  

  

  

  ^ 
  

  

  t 
  

  

  Fig. 
  2. 
  — 
  Head 
  of 
  larva 
  of 
  two-lined 
  Tdepliorus, 
  enlarged. 
  

  

  a, 
  top 
  view 
  of 
  head 
  and 
  prothoracic 
  segment 
  ; 
  at, 
  antennas 
  ; 
  md, 
  mandibles 
  ; 
  h, 
  under 
  

   side 
  showing 
  vq) 
  the 
  maxiilary 
  palpi 
  ; 
  Ijy, 
  labial 
  palpi 
  ; 
  /, 
  hrst 
  pair 
  of 
  feet. 
  

  

  The 
  beetles 
  of 
  this 
  and 
  other 
  species 
  which 
  belong 
  to 
  the 
  family 
  of 
  

   fire-flies 
  feed 
  on 
  the 
  leaves 
  of 
  forest 
  deciduous 
  trees, 
  especially 
  the 
  birch. 
  

  

  