﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  34I 
  

  

  Harrington, 
  W^. 
  H. 
  Royal 
  society 
  of 
  Canada. 
  Transactions. 
  

  

  Section 
  4. 
  1893. 
  p. 
  139, 
  147, 
  148, 
  153 
  (description). 
  

  

  Cooley, 
  R. 
  A. 
  Psyche. 
  1896. 
  7 
  : 
  397 
  (wing 
  structure). 
  

  

  This 
  interesting 
  insect 
  is 
  closely 
  allied 
  to 
  U. 
  albicornis 
  of 
  a 
  preceding 
  

   page, 
  from 
  which 
  it 
  differs 
  mainly, 
  in 
  having 
  the 
  10 
  basal 
  joints 
  of 
  the 
  

   antennae 
  black, 
  and 
  only 
  the 
  hind 
  tibiae 
  and 
  tarsi 
  white-banded. 
  

  

  Description 
  of 
  the 
  imago. 
  At 
  first 
  glance, 
  this 
  insect, 
  with 
  its 
  

   wings 
  folded 
  upon 
  its 
  back, 
  looks 
  not 
  much 
  unlike 
  one 
  of 
  the 
  large 
  black 
  

   wasps 
  {Po??ipilius), 
  but 
  on 
  closer 
  examination 
  it 
  is 
  seen 
  to 
  be 
  one 
  of 
  the 
  

   peculiar 
  hymenopterous 
  forms 
  commonly 
  known 
  from 
  their 
  formidable 
  

   projecting 
  ovipositor, 
  as 
  horn-tails. 
  It 
  may 
  be 
  distinguished 
  from 
  its 
  

   allies 
  by 
  the 
  apical 
  eight 
  or 
  10 
  segmeiits 
  of 
  the 
  antennae 
  being 
  

   straw- 
  white, 
  except 
  the 
  tip 
  of 
  the 
  terminal 
  segment 
  which 
  is 
  brown; 
  the 
  

   otbers'are 
  brownish 
  or 
  black 
  in 
  color. 
  A 
  spot 
  behind 
  each 
  eye 
  is 
  yellowish, 
  

   the 
  thorax 
  black, 
  the 
  wings 
  smoky 
  brown, 
  and 
  the 
  abdomen 
  above 
  yel- 
  

   lowish 
  brown, 
  the 
  terminal 
  segments 
  being 
  darker. 
  The 
  base 
  of 
  both 
  

   tibiae 
  and 
  tarsi 
  of 
  the 
  legs 
  in 
  the 
  example 
  before 
  me 
  are 
  yellowish, 
  there 
  

   being 
  but 
  little 
  of 
  it 
  on 
  the 
  anterior 
  two 
  pairs. 
  

  

  The 
  following 
  more 
  detailed 
  description 
  is 
  from 
  Mr 
  Norton: 
  

  

  Female. 
  Black; 
  antennae 
  20-jointed, 
  the 
  10 
  apical 
  articles 
  straw 
  

   white, 
  the 
  base 
  of 
  the 
  nth 
  and 
  tip 
  of 
  the 
  apical 
  article 
  brown; 
  a 
  rufous 
  

   spot 
  (not 
  defined 
  at 
  edges) 
  back 
  of 
  each 
  eye; 
  the 
  six 
  basal 
  segments 
  of 
  

   the 
  abdomen 
  of 
  a 
  soft 
  velvety 
  violaceous 
  brown; 
  remaining 
  segments 
  

   rufous 
  : 
  cornu 
  compressed 
  at 
  base, 
  lance 
  shaped 
  ; 
  ovipositor 
  not 
  longer 
  

   than 
  iil)don!en 
  and 
  cornu 
  together; 
  legs 
  black, 
  the 
  base 
  of 
  posterior 
  

   tibiae 
  and 
  of 
  first 
  joint 
  of 
  their 
  tarsi 
  white; 
  remaining 
  joints 
  blackish; 
  

   all 
  the 
  claws 
  red 
  ; 
  wmgs 
  obscure 
  brownish 
  violaceous, 
  nervures 
  piceous 
  ; 
  

   cross 
  nervure 
  of 
  second 
  brachial 
  ceil 
  incomplete. 
  

  

  This 
  species 
  is 
  comparatively 
  rare 
  in 
  this 
  vicinity. 
  Two 
  interesting 
  

  

  varieties 
  have 
  been 
  described, 
  one 
  from 
  Albany, 
  N. 
  Y., 
  and 
  the 
  other 
  

  

  from 
  New 
  Jersey 
  (see 
  citation). 
  

  

  Life 
  history 
  and 
  distribution. 
  The 
  larva, 
  hatched 
  from 
  the 
  egg, 
  

   when 
  it 
  approaches 
  maturity, 
  is 
  able 
  to 
  excavate 
  large 
  burrows 
  within 
  

   the 
  trunk, 
  to 
  the 
  serious 
  injury 
  of 
  the 
  tree 
  that 
  it 
  infests. 
  In 
  its 
  genera^ 
  

   appearance 
  it 
  is 
  long, 
  cylindric, 
  with 
  six 
  legs, 
  a 
  small, 
  rounded 
  head, 
  and 
  

   a 
  pointed 
  horny 
  tail. 
  When 
  it 
  attains 
  its 
  growth, 
  it 
  undergoes 
  its 
  trans- 
  

   formations 
  within 
  a 
  cocoon 
  of 
  chips 
  built 
  at 
  the 
  end 
  of 
  the 
  burrow 
  and 
  

   spun 
  together 
  wdth 
  silk. 
  The 
  length 
  of 
  time 
  that 
  it 
  remains 
  in 
  its 
  grub 
  

   state 
  is 
  not 
  known. 
  

  

  This 
  insect 
  has 
  been 
  recorded 
  from 
  New 
  York, 
  New 
  Jersey 
  and 
  Penn- 
  

   sylvania. 
  Its 
  rarity 
  has 
  probably 
  prevented 
  its 
  being 
  detected 
  in 
  many 
  

   localities 
  where 
  it 
  occurs, 
  although 
  it 
  is 
  undoubtedly 
  much 
  less 
  common 
  

   and 
  with 
  a 
  more 
  restricted 
  range 
  than 
  U. 
  albicornis. 
  

  

  