﻿NO. 
  1970. 
  yE 
  ARCTIC 
  0RTH0PTER0U8 
  INSECTS— 
  CAUDELL. 
  601 
  

  

  c^. 
  Anal 
  field 
  of 
  the 
  wing 
  with 
  two 
  or 
  more 
  folds, 
  or 
  apterous 
  with 
  the 
  pronotum 
  

   smooth. 
  

  

  d}. 
  Supraanal 
  plate 
  of 
  both 
  sexes 
  apically 
  notched 
  Blaberin^. 
  

  

  <P. 
  Supraanal 
  plate 
  of 
  both 
  sexes 
  apically 
  entire 
  PANESTHiNiE. 
  

  

  The 
  subfamily 
  Nyctoborinae 
  is 
  represented 
  with 
  us 
  by 
  two 
  genera, 
  

   the 
  first, 
  Atta'phila 
  Wheeler, 
  comprising 
  only 
  the 
  minute 
  myrmeco- 
  

   philous 
  species 
  /un^-icoZa- 
  Wheeler 
  from 
  Texas, 
  and 
  the 
  second, 
  Nycto- 
  

   hora 
  Burmeister, 
  a 
  genus 
  of 
  very 
  large 
  roaches, 
  of 
  which 
  three 
  species 
  

   have 
  been 
  recorded 
  from 
  within 
  our 
  boundaries, 
  all 
  three 
  being 
  

   introductions. 
  

  

  Of 
  the 
  subfamily 
  Blattinse 
  we 
  have 
  several 
  genera, 
  which 
  may 
  be 
  

   distinguished 
  by 
  the 
  following 
  superficial 
  key.^ 
  

  

  Key 
  to 
  genera 
  of 
  subfamily 
  Blattinx. 
  

  

  a'. 
  Larger, 
  the 
  pronotum 
  7 
  mm. 
  or 
  more 
  in 
  length. 
  

  

  h^. 
  Elytra 
  extending 
  nearly 
  or 
  entirely 
  to 
  the 
  tip 
  of 
  the 
  abdomen. 
  

   c^. 
  Elytra 
  extending 
  considerably 
  beyond 
  the 
  tip 
  of 
  the 
  abdomen. 
  

  

  Periplaneta 
  Burmeister. 
  

   c~. 
  Elytra 
  not 
  or 
  barely 
  exceeding 
  the 
  tip 
  of 
  the 
  abdomen. 
  .Pelmatosilpha 
  Dohrn. 
  

   ¥. 
  Elytra 
  falling 
  considerably 
  short 
  of 
  the 
  tip 
  of 
  the 
  abdomen, 
  

   c'. 
  Pronotum 
  uniformly 
  black. 
  

  

  (P 
  . 
  Arolia 
  small, 
  less 
  than 
  one-half 
  as 
  long 
  as 
  the 
  claws 
  Blatta 
  Linnaeus. 
  

  

  dr. 
  Arolia 
  large, 
  fully 
  one-half 
  as 
  long 
  as 
  the 
  claws 
  Eurycotis 
  St&l. 
  

  

  c^. 
  Pronotum 
  with 
  yellowish 
  markings 
  Blatta 
  Linnaeus. 
  

  

  a-. 
  Smaller, 
  the 
  pronotum 
  less 
  than 
  7 
  mm. 
  in 
  length. 
  

   6'. 
  Antennae 
  setaceous, 
  sparsely 
  pilose, 
  

   c^ 
  Elytra 
  of 
  the 
  male 
  extending 
  beyond 
  the 
  tip 
  of 
  the 
  abdomen; 
  subgenital 
  

   plate 
  of 
  the 
  female 
  entire. 
  

   d^. 
  Small, 
  entire 
  length 
  no 
  more 
  than 
  8 
  mm. 
  

   e\ 
  Elytra 
  of 
  female 
  falling 
  much 
  short 
  of 
  the 
  tip 
  of 
  the 
  abdomen. 
  

  

  Ischnoptera 
  Burmeister. 
  

   e^. 
  Elytra 
  of 
  both 
  sexes 
  extending 
  nearly 
  or 
  quite 
  to 
  the 
  tip 
  of 
  the 
  abdomen. 
  

  

  Ceratinoptera 
  Brunner. 
  

   d'. 
  Larger, 
  entire 
  length 
  more 
  than 
  8 
  mm. 
  

   e^. 
  Disk 
  of 
  pronotum 
  shiny 
  black 
  with 
  a 
  bright 
  yellow 
  stripe 
  bounding 
  it, 
  

   this 
  stripe 
  being 
  marginal 
  laterally 
  and 
  separated 
  from 
  the 
  edge 
  narrowly 
  

  

  in 
  front 
  and 
  broadly 
  behind 
  (fig. 
  9) 
  Phyllodromica 
  Fieber. 
  

  

  €-. 
  Disk 
  of 
  pronotum 
  not 
  as 
  above. 
  

   /'. 
  Posterior 
  ulnar 
  vein 
  of 
  wing 
  with 
  some 
  of 
  the 
  branches 
  incomplete 
  or 
  

   ending 
  in 
  the 
  dividing 
  vein 
  (fig. 
  10). 
  

   g^. 
  Cerci 
  extending 
  distinctly 
  more 
  than 
  one-half 
  its 
  own 
  length 
  beyond 
  

  

  the 
  tip 
  of 
  the 
  supra-anal 
  plate 
  Ischnoptera 
  Burmeister. 
  

  

  g^. 
  Cerci 
  not 
  extending 
  distinctly 
  more 
  than 
  half 
  its 
  own 
  length 
  beyond 
  

  

  the 
  tip 
  of 
  the 
  supra 
  -anal 
  plate 
  Phoetalia 
  Stal. 
  

  

  p. 
  Posterior 
  ulnar 
  vein 
  of 
  wing 
  simple, 
  or 
  with 
  all 
  the 
  branches 
  extending 
  

  

  to 
  the 
  apex 
  of 
  the 
  wing, 
  or 
  the 
  vein 
  connected 
  to 
  the 
  dividing 
  vein 
  by 
  

  

  parallel 
  cross 
  veins. 
  

  

  g^. 
  Anterior 
  inferior 
  margin 
  of 
  the 
  fore 
  femora 
  armed 
  on 
  the 
  basal 
  half 
  

  

  with 
  from 
  three 
  to 
  five 
  or 
  six 
  strong 
  spines 
  succeeded 
  distally 
  by 
  a 
  

  

  row 
  of 
  smaller 
  close-set 
  spinules 
  (fig. 
  11); 
  elytra 
  of 
  nearctic 
  forms 
  

  

  unicolorous 
  Blattella 
  Caudell. 
  

  

  I 
  Epilampra 
  does 
  not 
  appear 
  in 
  this 
  table. 
  It 
  is 
  known 
  In 
  our 
  fauna 
  by 
  a 
  single 
  unnamed 
  specimen, 
  a 
  

   female 
  from 
  New 
  Jersey, 
  in 
  the 
  collection 
  of 
  the 
  Academy 
  of 
  Natural 
  Sciences 
  in 
  Philadelphia. 
  

  

  