﻿abt. 
  1 
  AMERICAN 
  PLOIARIINAE 
  McATEE 
  AND 
  MALLOCH 
  47 
  

  

  be 
  considered 
  as 
  5-segmented. 
  This 
  is, 
  however, 
  not 
  really 
  the 
  case, 
  

   the 
  pseudosuture 
  being 
  almost 
  indistinguishable 
  in 
  cleared 
  material 
  

   and 
  much 
  less 
  so 
  in 
  dry 
  specimens. 
  

  

  Genus 
  POLAUCHEN1A, 
  new 
  genus. 
  

  

  Differs 
  from 
  Eme&a 
  in 
  having 
  only 
  2 
  discal 
  cells 
  in 
  forewing 
  (fig. 
  

   65) 
  and 
  in 
  having 
  the 
  mesonotum 
  and 
  metanotum 
  spined, 
  and 
  from 
  

   Stenolemus 
  in 
  having 
  the 
  fore 
  tarsi 
  3-segmented 
  (fig. 
  64«), 
  and 
  in 
  

   having 
  no 
  vein 
  arising 
  from 
  the 
  costal 
  margin 
  of 
  the 
  basal 
  discal 
  

   cell. 
  The 
  fore 
  femur 
  has 
  the 
  basal 
  ventral 
  spine 
  directed 
  down- 
  

   ward 
  and 
  not 
  sloped 
  backward 
  (fig. 
  64), 
  the 
  head 
  has 
  two 
  pointed 
  

   conical 
  tubercles 
  behind 
  the 
  transverse 
  constriction 
  and 
  the 
  posterior 
  

   lateral 
  angles 
  of 
  pronotum 
  have 
  divergent 
  spines 
  of 
  moderate 
  length. 
  

  

  Genotype. 
  — 
  Polauchenia 
  protentor, 
  new 
  species. 
  

  

  KEY 
  TO 
  THE 
  SPECIES. 
  

  

  1. 
  Peduncle 
  of 
  prothorax 
  but 
  little 
  longer 
  than 
  anterior 
  lobe; 
  posterior 
  lobe 
  of 
  

   prothorax 
  with 
  two 
  broader 
  stramineous 
  vittae; 
  mid 
  and 
  hind 
  tibiae 
  each 
  

   with 
  two 
  brown 
  bands 
  on 
  basal 
  half; 
  preapical 
  brown 
  band 
  on 
  hind 
  femur 
  

  

  reduced 
  to 
  a 
  small 
  spot 
  biannulata, 
  new 
  species 
  (p. 
  48). 
  

  

  Peduncle 
  of 
  prothorax 
  about 
  three 
  times 
  as 
  long 
  as 
  anterior 
  lobe 
  (fig. 
  63) 
  ; 
  

   posterior 
  lobe 
  of 
  prothorax 
  with 
  three 
  narrower 
  stramineous 
  vittae 
  on 
  

   disk; 
  mid 
  and 
  hind 
  tibiae 
  each 
  with 
  five 
  brown 
  bands 
  on 
  basal 
  half; 
  pre- 
  

   apical 
  brown 
  band 
  on 
  hind 
  femur 
  broad 
  protentor, 
  new 
  species 
  (p. 
  47). 
  

  

  POLAUCHENIA 
  PROTENTOR. 
  new 
  species. 
  

  

  Female. 
  — 
  Dark 
  brown, 
  marked 
  with 
  pale 
  yellow. 
  Basal 
  and 
  sec- 
  

   ond 
  antennal 
  segments 
  each 
  with 
  four 
  pale 
  annuli 
  ; 
  basal 
  two 
  seg- 
  

   ments 
  of 
  beak 
  pale 
  at 
  apices; 
  prothorax 
  with 
  markings 
  as 
  in 
  figure 
  

   63. 
  Spines 
  of 
  mesothorax 
  and 
  metathorax 
  pale. 
  Abdomen 
  fuscous, 
  

   spiracles, 
  lateral 
  posterior 
  angles 
  of 
  segments, 
  and 
  some 
  linear 
  marks 
  

   on 
  venter 
  yellowish. 
  Legs 
  whitish 
  yellow, 
  each 
  femur 
  with 
  five 
  

   brown 
  annuli; 
  fore 
  tibiae 
  with 
  four 
  brown 
  annuli, 
  mid 
  and 
  hind 
  

   pairs 
  each 
  with 
  five 
  brown 
  annuli 
  on 
  basal 
  half. 
  Wings 
  brown, 
  

   darker 
  apically, 
  veins 
  yellow, 
  the 
  membrane 
  along 
  the 
  cross-veins, 
  

   most 
  of 
  clavus, 
  and 
  base 
  of 
  corium 
  whitish. 
  

  

  Head, 
  antennae, 
  prothorax, 
  and 
  fore 
  coxae 
  as 
  in 
  Figure 
  63. 
  Fore 
  

   femur 
  a 
  little 
  less 
  than 
  twice 
  as 
  long 
  as 
  fore 
  coxae, 
  with 
  armature 
  

   as 
  in 
  figure 
  64 
  ; 
  spines 
  of 
  mesothorax 
  and 
  metathorax 
  short 
  and 
  

   straight, 
  pubescent. 
  Abdomen 
  broadened 
  slightly 
  beyond 
  middle, 
  

   the 
  tergites 
  angulate 
  laterally 
  but 
  without 
  well 
  developed 
  lateral 
  

   appendages; 
  venter 
  without 
  submedian 
  spines, 
  spiracles 
  but 
  little 
  

   elevated, 
  not 
  pedicillate, 
  seventh 
  pair 
  not 
  exposed. 
  Hind 
  femora 
  

   about 
  as 
  long 
  as 
  head 
  and 
  body 
  together, 
  the 
  tibiae 
  distinctly 
  longer, 
  

  

  