﻿art. 
  1 
  AMERICAN 
  PLOIARIINAE 
  McATEE 
  AND 
  MALLOCH 
  105 
  

  

  GHILIANELLA 
  MINIMULA, 
  new 
  species. 
  

  

  Male. 
  — 
  Head 
  and 
  body 
  dark 
  reddish-brown, 
  legs 
  and 
  antennae 
  

   yellowish, 
  fuscous 
  near 
  joints; 
  head 
  and 
  thorax 
  decidedly 
  granulate, 
  

   pubescence 
  short 
  and 
  sparse. 
  Frontal 
  spine 
  strong, 
  porrect, 
  head 
  

   with 
  a 
  pair 
  of 
  divergent 
  pointed 
  tubercles 
  just 
  behind 
  transverse 
  

   sulcus. 
  Abdomen 
  widest 
  at 
  the 
  anterior 
  part 
  of 
  fifth 
  segment, 
  

   tapering 
  gradually 
  both 
  fore 
  and 
  aft; 
  seventh 
  tergite 
  narrowing 
  

   rather 
  rapidly 
  from 
  middle 
  to 
  the 
  rather 
  broadly 
  rounded 
  apex 
  which 
  

   projects 
  a 
  little 
  beyond 
  hypopygium. 
  Hind 
  margins 
  of 
  all 
  sternites 
  

   emarginate 
  medianly, 
  those 
  of 
  5 
  and 
  6 
  most 
  so, 
  that 
  of 
  7 
  very 
  broadly 
  

   and 
  shallowly, 
  and 
  that 
  of 
  8, 
  narrowly 
  and 
  slightly. 
  Hypopygium 
  

   short, 
  opening 
  upward, 
  claspers 
  short, 
  tapering 
  from 
  base 
  to 
  apex. 
  

  

  Female. 
  — 
  Color, 
  granulation 
  and 
  pubescence, 
  also 
  spine 
  and 
  tuber- 
  

   cles 
  of 
  head 
  as 
  in 
  male. 
  Abdomen 
  widening 
  to 
  end 
  of 
  seventh 
  ter- 
  

   gite, 
  which 
  has 
  a 
  moderate 
  median 
  tubercle 
  a 
  little 
  farther 
  produced 
  

   than 
  the 
  hind 
  angles. 
  Eighth 
  tergite 
  short, 
  semi-elliptical, 
  ninth 
  

   moderately 
  long, 
  rounded 
  at 
  apex, 
  each 
  with 
  a 
  median 
  carina 
  and 
  

   transverse 
  corrugations. 
  Sutures 
  between 
  sternites 
  on 
  the 
  same 
  plan 
  

   as 
  in 
  male, 
  hind 
  margin 
  of 
  seventh 
  prominent 
  but 
  not 
  produced 
  

   medianly, 
  concave 
  laterally; 
  eighth 
  visible 
  only 
  on 
  sides. 
  

  

  Length, 
  15-17 
  mm. 
  

  

  Holotype. 
  — 
  Male, 
  paratype 
  female, 
  allotype, 
  female, 
  Chapada, 
  

   Brazil, 
  September, 
  no 
  date, 
  and 
  August, 
  respectively 
  (Carnegie 
  

   Mus.). 
  

  

  GHILIANELLA 
  SUCCINCTA, 
  new 
  species. 
  

  

  While 
  this 
  species 
  runs 
  in 
  our 
  key 
  to 
  the 
  same 
  couplet 
  with 
  G. 
  pro- 
  

   ductilis, 
  it 
  is 
  not 
  as 
  closely 
  related 
  to 
  that 
  species 
  as 
  is 
  persimilis, 
  

   lacking 
  the 
  long 
  terete 
  head 
  and 
  characteristic 
  dark 
  dots, 
  in 
  addition 
  

   to 
  having 
  a 
  distinctively 
  shaped 
  abdomen. 
  

  

  Female. 
  — 
  Fuscous, 
  spotted 
  and 
  marbled 
  with 
  ochraceous; 
  head 
  

   and 
  thorax 
  indistinctly 
  granulate, 
  but 
  with 
  plentiful, 
  short, 
  crinkly, 
  

   pale 
  reddish 
  hair, 
  abdomen 
  more 
  sparsely 
  provided 
  with 
  similar 
  but 
  

   straight 
  hairs; 
  the 
  seventh 
  tergite 
  is 
  but 
  little 
  longer 
  than 
  wide 
  (in 
  

   productilis 
  it 
  is 
  twice 
  as 
  long 
  as 
  wide) 
  ; 
  lateral 
  pieces 
  of 
  this 
  tergite 
  

   produced 
  posteriorly 
  as 
  short 
  rounded 
  angles, 
  the 
  hind 
  margin 
  be- 
  

   tween 
  them 
  slightly 
  convex 
  but 
  not 
  tuberculate 
  medianly; 
  eighth 
  

   tergite 
  semi-elliptical, 
  with 
  broad 
  median 
  carina 
  and 
  transverse 
  cor- 
  

   rugations 
  ; 
  ninth 
  as 
  described 
  in 
  key. 
  Hind 
  margin 
  of 
  sixth 
  sternite 
  

   slightly 
  emarginate 
  medianly 
  and 
  less 
  so 
  laterally, 
  of 
  seventh 
  rather 
  

   strongly 
  concave, 
  with 
  a 
  short 
  triangular 
  process 
  in 
  the 
  middle. 
  

  

  Length, 
  23 
  mm. 
  

  

  Holotype. 
  — 
  Female, 
  Para, 
  Brazil 
  (Carnegie 
  Mus.). 
  

   94993—25 
  8 
  

  

  