﻿58o 
  REPORT 
  OF 
  NEW 
  JERSEY 
  STATE 
  MUSEUM. 
  

  

  Altogether 
  the 
  list 
  now 
  presents 
  a 
  very 
  fair 
  picture 
  of 
  our 
  Hymenopter- 
  

   ous 
  fauna, 
  although 
  even 
  yet 
  far 
  from 
  complete. 
  

  

  PHYTOPHAGA. 
  

  

  The 
  species 
  of 
  this 
  series 
  have 
  little 
  in 
  common 
  save 
  that, 
  with 
  few 
  

   exceptions, 
  they 
  feed 
  directly 
  or 
  Indirectly 
  on 
  vegetable 
  matter; 
  directly 
  

   when, 
  as 
  with 
  the 
  saw-flies, 
  the 
  entire 
  tissue 
  is 
  eaten; 
  indirectly 
  when, 
  as 
  

   in 
  the 
  gall-flies, 
  a 
  distortion 
  of 
  growth 
  is 
  caused, 
  upon 
  the 
  secretions 
  of 
  

   which 
  the 
  larva 
  is 
  nourished. 
  

  

  Super-family 
  TENTHREDINOIDEA. 
  

  

  These 
  are 
  the 
  saw-flies, 
  in 
  which 
  the 
  ovipositor 
  of 
  the 
  female 
  is 
  modi- 
  

   fied 
  into 
  a 
  pair 
  of 
  plates 
  variably 
  serrated 
  at 
  the 
  edges, 
  working 
  between 
  

   a 
  pair 
  of 
  sheaths. 
  They 
  are 
  usually 
  rather 
  compactly 
  built 
  but 
  not 
  very 
  

   hard 
  species, 
  head, 
  thorax 
  and 
  abdomen 
  of 
  nearly 
  equal 
  width, 
  abdomen 
  

   sessile 
  or 
  united 
  to 
  the 
  thorax 
  for 
  its 
  full 
  width, 
  without 
  trace 
  of 
  stalk, 
  the 
  

   wings 
  folded 
  over 
  the 
  abdomen 
  when 
  at 
  rest, 
  the 
  secondaries 
  with 
  a 
  

   broad 
  anal 
  lobe, 
  making 
  them 
  wider 
  than 
  the 
  primaries. 
  The 
  flies 
  are 
  

   sometimes 
  sluggish 
  and 
  may 
  be 
  picked 
  off 
  the 
  plants 
  on 
  which 
  they 
  rest 
  

   with 
  the 
  fingers. 
  

  

  The 
  larvae 
  vary 
  greatly 
  in 
  feeding 
  habits, 
  some 
  forming 
  galls, 
  others 
  

   living 
  in 
  stems, 
  a 
  few 
  in 
  fruits, 
  many 
  as 
  leaf-miners, 
  some 
  as 
  leaf 
  skele- 
  

   tonizers, 
  while 
  the 
  majority 
  eat 
  openly 
  upon 
  their 
  food 
  plants. 
  In 
  a 
  

   general 
  way 
  they 
  resemble 
  caterpillars 
  in 
  form; 
  but 
  have 
  at 
  least 
  five 
  

   pairs 
  of 
  abdominal 
  pro-legs. 
  Many 
  have 
  the 
  habit 
  of 
  characteristically 
  

   curling 
  up 
  the 
  hind 
  portion 
  of 
  the 
  body 
  while 
  feeding, 
  and 
  quite 
  a 
  number 
  

   are 
  viscid 
  and 
  slug-like 
  in 
  appearance. 
  They 
  are 
  usually 
  kept 
  in 
  check 
  

   with 
  arsenical 
  poisons 
  or 
  with 
  white 
  hellebore, 
  dry 
  or 
  in 
  decoction, 
  to 
  

   which 
  they 
  are 
  peculiarly 
  susceptible. 
  Against 
  some 
  of 
  the 
  slimy 
  forms 
  

   dry 
  hydrate 
  of 
  lime 
  or 
  even 
  very 
  fine 
  road-dust 
  is 
  satisfactorily 
  available. 
  

  

  Family 
  XYELID.F.. 
  

  

  ODONTOPHYES 
  Konow. 
  

   O. 
  avingrata 
  Dyar. 
  Ft. 
  Lee. 
  Plainfield: 
  on 
  hickory 
  and 
  butternut 
  (Dyar). 
  

  

  MACROXYELA 
  Kirby. 
  

  

  M. 
  infuscata 
  Nort. 
  (senea 
  Nort.) 
  Staten 
  Island 
  III 
  (Ds) 
  ; 
  larva 
  on 
  

   leaves 
  of 
  elm. 
  

   "M. 
  ferruginea 
  Say" 
  will 
  probably 
  not 
  be 
  found 
  in 
  New 
  Jersey, 
  but 
  

   "bicolor 
  MacG." 
  and 
  "distincta 
  MacG." 
  are 
  likely 
  to 
  occur. 
  

  

  XYELA 
  Dalm. 
  

  

  X. 
  minor 
  Nort. 
  Riverton 
  IV, 
  17, 
  Clementon 
  V, 
  19 
  ( 
  Jn) 
  ; 
  larva 
  on 
  pine 
  

   (Dyar). 
  

  

  