﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHRYASTINI 
  — 
  DAVIS 
  533 
  

  

  the 
  rostrum 
  obsolctcly 
  extending 
  to 
  the 
  inter-ocular 
  portion 
  of 
  the 
  head, 
  thelatero- 
  

   anterior 
  lobe 
  of 
  the 
  prothorax 
  less 
  prominent, 
  and 
  the 
  depressed 
  basal 
  jjortion 
  of 
  

   the 
  prothorax 
  more 
  produced 
  in 
  the 
  middle 
  behind. 
  The 
  ucck-likc 
  constriction 
  

   to 
  the 
  base 
  of 
  the 
  elytra 
  separates 
  O. 
  roUnris 
  from 
  0. 
  tuberosum, 
  lituberosus, 
  and 
  

   basalts, 
  the 
  last 
  mentioned 
  insect, 
  moreover, 
  having 
  the 
  median 
  sulcus 
  of 
  the 
  

   rostrum 
  extending 
  upwards. 
  The 
  dark 
  markings 
  may 
  be 
  partly 
  due 
  to 
  abrasion 
  

   or 
  discoloration. 
  Both 
  examples 
  are 
  figured. 
  

  

  No 
  representative 
  of 
  tliis 
  species 
  was 
  available 
  for 
  study, 
  so 
  I 
  have 
  

   placed 
  collaris 
  in 
  the 
  key 
  where 
  it 
  seemed 
  to 
  belong 
  from 
  the 
  above 
  

   description. 
  

  

  OPHKYA9TES 
  TUBEROSUS 
  LeConte 
  

  

  Figure 
  70 
  

   Ophryaslea 
  tuberosus 
  LeConte, 
  1853, 
  p. 
  143. 
  

  

  Broadly 
  elongate 
  oval, 
  dorsum 
  slightly 
  depressed. 
  Head 
  gray, 
  

   pronotum 
  gray-black, 
  elytra 
  gray-black, 
  intervals 
  1 
  and 
  3 
  apically 
  and 
  

   5 
  and 
  7 
  for 
  nearly 
  their 
  entire 
  length 
  light 
  ashy 
  gray, 
  logs 
  light 
  gray. 
  

   Rostrum 
  stout, 
  not 
  greatly 
  arched 
  at 
  apex 
  above, 
  slightly 
  or 
  not 
  at 
  all 
  

   constricted 
  at 
  base 
  beneath; 
  median 
  sulcus 
  deep, 
  acute, 
  wide, 
  not 
  

   interrupted 
  by 
  a 
  fovea 
  apically, 
  and 
  terminating 
  at 
  junction 
  of 
  head 
  

   and 
  rostrum; 
  lateral 
  sulci 
  well 
  defined 
  apically, 
  vague 
  and 
  broad 
  

   basally, 
  and 
  continuing 
  upon 
  the 
  head 
  above 
  the 
  eyes, 
  causing 
  large 
  

   "supra-orbital" 
  ridges. 
  Head 
  evenly 
  rounded, 
  not 
  separated 
  from 
  the 
  

   rostrum 
  by 
  a 
  transverse 
  impression, 
  although 
  head 
  and 
  rostrum 
  have 
  

   slight 
  separate 
  convexities 
  as 
  viewed 
  from 
  the 
  side, 
  caused 
  by 
  the 
  great 
  

   development 
  of 
  the 
  intersidoal 
  ridges 
  upon 
  the 
  rostrum; 
  head 
  and 
  

   rostrum 
  finely, 
  or 
  at 
  most 
  only 
  moderately 
  coarsely 
  punctate. 
  Pro- 
  

   notum 
  two-fifths 
  wider 
  than 
  long, 
  base 
  wider 
  than 
  apex, 
  quadrate 
  in 
  

   outline, 
  widest 
  across 
  basal 
  tuberosities; 
  tuberosities 
  large, 
  subequal 
  

   in 
  size; 
  basal 
  margin 
  squarely 
  transverse, 
  apical 
  margin 
  rounded, 
  i)ro- 
  

   duced 
  in 
  the 
  center; 
  punctation 
  of 
  disk 
  coarse 
  and 
  close, 
  median 
  sulcus 
  

   of 
  pronotum 
  subobsolete. 
  Elytra 
  widest 
  at 
  about 
  the 
  middle, 
  humeii 
  

   lacking; 
  punctures 
  of 
  elytral 
  striae 
  large, 
  round, 
  separate; 
  interval 
  o 
  con- 
  

   spicuously 
  wider 
  and 
  elevated, 
  otheis 
  sub('(|ui'l 
  in 
  width 
  and 
  slightly 
  

   convex; 
  setae 
  extremely 
  sniall 
  and 
  inconspicuous, 
  white. 
  Legs 
  stout; 
  

   anterior 
  tibiae; 
  nnidi 
  curved, 
  and 
  terminated 
  in 
  a 
  distinct 
  iiook; 
  apices 
  

   of 
  liind 
  til)iao 
  rounded, 
  not 
  truncate. 
  'JMie 
  f«)rii'oiiig 
  description 
  is 
  

   that 
  of 
  the 
  type 
  in 
  the 
  ijcConte 
  collection. 
  

  

  Female, 
  prnilfilia 
  (fig. 
  70, 
  a, 
  h, 
  c).— 
  (ienital 
  tuhe 
  heavily 
  cliitini/.cd; 
  

   apical 
  plates 
  strongly 
  curved 
  downward, 
  concave 
  beneath, 
  pointed 
  at 
  

   apices. 
  The 
  inner 
  dorsal 
  edge 
  of 
  each 
  is 
  raised 
  into 
  a 
  thin 
  keel 
  ex- 
  

   tending 
  to 
  the 
  apical 
  one-half 
  or 
  two-fifths. 
  Coxites 
  large, 
  rounded; 
  

   styli 
  small, 
  placed 
  upon 
  large, 
  semi-membranous 
  areas 
  upon 
  i\w 
  dorso- 
  

   lateral 
  faces 
  of 
  the 
  coxites. 
  Eighth 
  .sternitc 
  with 
  the 
  external 
  corners 
  

   rounded, 
  and 
  a 
  large, 
  obtuse 
  emargination 
  Jit 
  apex. 
  

  

  