﻿art. 
  1 
  AMERICAN 
  PLOIARIINAE 
  McATEE 
  AND 
  MALLOCH 
  61 
  

  

  PLOIARIA 
  PILICORNIS, 
  new 
  species. 
  

  

  Male. 
  — 
  Similar 
  to 
  bispina 
  in 
  color 
  but 
  the 
  fore 
  femur 
  has 
  a 
  faint 
  

   subapical 
  fuscous 
  annulus. 
  

  

  The 
  head 
  is 
  slightly 
  broader 
  than 
  in 
  bispina 
  (fig. 
  78), 
  the 
  pro- 
  

   notum 
  is 
  not 
  sulcate 
  and 
  is 
  more 
  constricted 
  before 
  the 
  hind 
  margin, 
  

   the 
  fore 
  femora 
  are 
  stouter, 
  the 
  short 
  spines 
  are 
  less 
  numerous, 
  the 
  

   long 
  spines 
  are 
  longer, 
  the 
  longest 
  fully 
  as 
  long 
  as 
  the 
  femoral 
  

   diameter, 
  and 
  the 
  apical 
  one 
  is 
  at 
  one-third 
  the 
  length 
  of 
  femur 
  from 
  

   apex. 
  Hind 
  border 
  of 
  hypopygium 
  as 
  in 
  figure 
  79. 
  

  

  Length, 
  5.5 
  mm. 
  

  

  Holotype.— 
  Higley, 
  Ariz., 
  June 
  27, 
  1917, 
  E. 
  G. 
  Holt 
  (U.S.N.M.). 
  

  

  Type— 
  Cat. 
  No. 
  26723 
  U.S.N.M. 
  

  

  PLOIARIA 
  UNISERIATA, 
  new 
  species. 
  

  

  Male. 
  — 
  Brownish 
  fuscous, 
  dorsum 
  of 
  mesonotum 
  yellowish-testa- 
  

   ceous, 
  antennae 
  and 
  legs 
  brown, 
  not 
  noticeably 
  annulated. 
  Wings 
  

   with 
  dusky 
  reticulation 
  and 
  a 
  more 
  prominent 
  spot 
  in 
  discal 
  cell 
  

   and 
  in 
  area 
  of 
  wing 
  just 
  posterior 
  to 
  it 
  on 
  inner 
  side. 
  

  

  Eyes 
  large, 
  as 
  high 
  as 
  head 
  and 
  nearly 
  half 
  its 
  length, 
  width 
  of 
  

   one 
  above 
  equal 
  to 
  space 
  between 
  them 
  ; 
  posterior 
  margin 
  of 
  anterior 
  

   lobe 
  of 
  head 
  and 
  anterior 
  margin 
  of 
  posterior 
  lobe 
  each 
  with 
  a 
  short 
  

   deep 
  sulcus 
  in 
  center, 
  on 
  each 
  side 
  of 
  which 
  the 
  surface 
  is 
  slightly 
  

   tumid; 
  antennae 
  long-haired. 
  Pronotum 
  not 
  much 
  tapered, 
  very 
  

   slightly 
  flared 
  posteriorly 
  ; 
  mesonotum 
  gradually 
  widened 
  posteriorly, 
  

   with 
  a 
  shallow 
  median 
  dorsal 
  sulcus 
  ; 
  mesonotum 
  ending 
  in 
  a 
  rounded 
  

   knob; 
  metanotum 
  with 
  the 
  margin 
  raised 
  and 
  three 
  discal 
  carinae. 
  

  

  Fore 
  coxa 
  slender, 
  about 
  1.25 
  as 
  long 
  as 
  pronotum 
  ; 
  trochanter 
  with 
  

   one 
  long 
  curved 
  spine 
  and 
  one 
  or 
  two 
  shorter 
  bristles 
  ; 
  femur 
  curved, 
  

   a 
  little 
  thicker 
  than 
  coxa, 
  postero-ventral 
  series 
  of 
  spines 
  consisting 
  

   of 
  about 
  six, 
  their 
  bases 
  distinctly 
  swollen, 
  the 
  longest 
  more 
  than 
  

   twice 
  as 
  long 
  as 
  femoral 
  diameter, 
  the 
  spines 
  bent 
  outward; 
  ventral 
  

   surface 
  fine-haired, 
  with 
  a 
  series 
  of 
  short 
  erect 
  setulae 
  on 
  median 
  

   third 
  ; 
  antero-ventral 
  spines 
  much 
  shorter 
  than 
  postero-ventral, 
  about 
  

   seven 
  in 
  number, 
  inwardly 
  curved, 
  a 
  wider 
  space 
  in 
  the 
  series 
  near 
  

   base 
  for 
  the 
  reception 
  of 
  the 
  tarsus 
  ; 
  tibia 
  two-thirds 
  as 
  long 
  as 
  coxa, 
  

   with 
  fine 
  setulae 
  along 
  antero-ventral 
  surface 
  which 
  are 
  about 
  as 
  long 
  

   as 
  tibial 
  diameter; 
  tarsus 
  about 
  as 
  long 
  as 
  tibia, 
  basal 
  segment 
  with 
  

   microscopic 
  setulae 
  posteriorly 
  (fig. 
  80). 
  Transverse 
  vein 
  at 
  one- 
  

   third 
  of 
  the 
  distance 
  from 
  tip 
  of 
  wing 
  to 
  apex 
  of 
  discal 
  cell, 
  the 
  latter 
  

   as 
  in 
  figure 
  81. 
  Hypopygium 
  rather 
  long, 
  black 
  and 
  polished 
  

   medianly, 
  claspers 
  long 
  and 
  slender, 
  much 
  curved 
  and 
  tapered 
  on 
  

   apical 
  half; 
  apical 
  tergite 
  convex 
  posteriorly. 
  

  

  Female. 
  — 
  Similar 
  to 
  the 
  male 
  in 
  armature 
  of 
  the 
  fore 
  legs. 
  The 
  

   eyes 
  are 
  much 
  smaller; 
  there 
  are 
  only 
  small 
  wingpads 
  present; 
  the 
  

  

  