﻿THE 
  INSECTS 
  OE 
  NEW 
  JERSEY. 
  

  

  595 
  

  

  J. 
  abbreviatus 
  Say. 
  (Cephus) 
  Larva 
  

   bores 
  into 
  stems 
  of 
  willow 
  and 
  sure- 
  

   ly 
  occurs 
  in 
  New 
  Jersey. 
  

  

  TRACHELUS 
  Jur. 
  

   T. 
  tabidus 
  Fab. 
  (Calamenta 
  johnsoni 
  

   Ashm.) 
  Riverton 
  V, 
  29 
  (Jn). 
  

  

  ADIRUS 
  Konow. 
  

   A. 
  trimaculatus 
  Say. 
  Trenton 
  VII, 
  7 
  

   (Hk); 
  Hammonton 
  IX, 
  Lahaway 
  VI, 
  

   29 
  (Coll); 
  the 
  larva 
  bores 
  in 
  the 
  

   stems 
  of 
  blackberry 
  canes, 
  entering 
  

   at 
  the 
  bottom 
  and 
  eating 
  out 
  the 
  

   center 
  to 
  the 
  tip. 
  

  

  CEPHUS 
  Latr. 
  

   C. 
  pygmaeus 
  Linn. 
  (Astatus) 
  The 
  

  

  "wheat 
  stem-borei"," 
  an 
  introduced 
  

   insect 
  which 
  has 
  done 
  considerable 
  

   injury 
  in 
  New 
  Yorlv; 
  but 
  has 
  not 
  yet 
  

   been 
  actually 
  found 
  in 
  New 
  Jersey. 
  

   It 
  may 
  be 
  expected 
  at 
  almost 
  any 
  

   time 
  in 
  the 
  northern 
  counties. 
  

  

  Ing. 
  J40. 
  — 
  Wheat 
  stem-borer, 
  Cephus 
  

  

  pygmccus: 
  a, 
  larva 
  in 
  outline; 
  b, 
  

  

  same, 
  enlarged; 
  c, 
  larva 
  in 
  wheat 
  

  

  stalk; 
  c, 
  adult, 
  enlarged; 
  f, 
  

  

  a 
  parasite 
  infesting 
  larva, 
  

  

  -ilso 
  enlarged. 
  

  

  Family 
  ORYSSID^. 
  

  

  Species 
  in 
  which 
  the 
  antennae 
  are 
  situated 
  just 
  above 
  the 
  mandibles 
  

   under 
  a 
  sharp 
  edge; 
  the 
  thorax 
  and 
  abdomen 
  are 
  so 
  closely 
  united 
  as 
  to 
  

   be 
  almost 
  immobile. 
  

  

  ORYSSUS 
  Latr. 
  

  

  O. 
  sayi 
  Westw. 
  Ashland, 
  Long 
  Branch 
  (Jn). 
  

   O. 
  terminalis 
  Newn. 
  Long 
  Branch 
  VI, 
  11 
  (Jn). 
  

  

  Super-family 
  CYNIPOIDEA. 
  

  

  The 
  insects 
  of 
  this 
  series 
  are 
  "gall-wasps" 
  or 
  "gall 
  flies," 
  largely 
  par- 
  

   asitic 
  upon 
  plants, 
  though 
  many 
  of 
  them 
  are 
  true 
  insect 
  parasites. 
  Some 
  

   also 
  are 
  guests 
  or 
  inquiiines, 
  inhabiting 
  galls 
  originally 
  caused 
  by 
  other 
  

   species. 
  Hence 
  it 
  is 
  not 
  unusual 
  to 
  breed 
  from 
  a 
  large 
  multicellular 
  

   gall 
  several 
  species 
  of 
  minute 
  Hymenoptera; 
  the 
  true 
  gall-maker 
  in 
  

   small 
  numbers, 
  the 
  guests 
  and 
  parasites 
  sometimes 
  in 
  great 
  quantity. 
  

   The 
  galls 
  are 
  abnormal 
  plant 
  growths 
  produced 
  by 
  the 
  irritation 
  of 
  the 
  

   minute 
  larvae 
  upon 
  the 
  plant 
  tissue, 
  and 
  each 
  species 
  produces 
  its 
  own 
  

   peculiar 
  gall, 
  so 
  that 
  classification 
  is 
  possible 
  from 
  these 
  abnormal 
  

  

  