﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHRYASTINI 
  — 
  DAVIS 
  543 
  

  

  fourth, 
  thonco 
  moiT 
  rapidly 
  to 
  an 
  acutely 
  rouiulod 
  apox; 
  iiKHliiin 
  

   orilico 
  broacil}' 
  oval, 
  subtruncntc 
  basalJy, 
  thrcc-sovenths 
  longer 
  than 
  

   wiilo. 
  

  

  Type 
  /ora/?/?/.— 
  Albuquerque, 
  N. 
  ^^ex. 
  No 
  specimens 
  have 
  been 
  

   seen 
  from 
  other 
  localities. 
  

  

  Remarks. 
  — 
  From 
  T. 
  ovalis 
  Pierce, 
  which 
  it 
  resembles 
  closely 
  super- 
  

   ficially, 
  the 
  present 
  species 
  may 
  be 
  distinf^uished 
  by 
  the 
  lack 
  of 
  a 
  

   trausvei-se 
  impression 
  at 
  the 
  base 
  of 
  the 
  rostrum, 
  and 
  the 
  finely 
  and 
  

   sparsely 
  punctate 
  proiiotum, 
  with 
  its 
  sharper 
  median 
  impression. 
  

   The 
  stria! 
  punctures 
  are 
  finer, 
  the 
  striae 
  finely 
  impressed, 
  and 
  the 
  

   iiitervals 
  less 
  convex. 
  From 
  T. 
  coarctatus 
  Champion 
  it 
  may 
  be 
  

   distinguished 
  by 
  the 
  rounded 
  humeri. 
  

  

  TOSASTES 
  OVALIS 
  Pierce 
  

  

  Figure 
  75 
  

   Toaastes 
  ovalis 
  Pierce, 
  1909,'p. 
  345. 
  

  

  Black, 
  covered 
  uniformly 
  with 
  gray-white 
  iml^ricated 
  scales, 
  base 
  

   of 
  head 
  dorsally 
  j'ellowish 
  white. 
  Rostrum 
  quadrate 
  in 
  cross 
  section, 
  

   stout, 
  somewhat 
  narrowed 
  at 
  base 
  beneath 
  and 
  at 
  sides; 
  median 
  sulcus 
  

   short, 
  interrupted, 
  fine, 
  or 
  entirely 
  lacking; 
  lateral 
  sulci 
  short, 
  rather 
  

   vague, 
  converging 
  sharply 
  at 
  base 
  of 
  rostrum 
  to 
  form 
  a 
  transverse 
  

   groove 
  (in 
  some 
  specimens 
  the 
  intumed 
  ends 
  fail 
  to 
  reach 
  the 
  center, 
  

   and 
  no 
  transverse 
  impression 
  is 
  therefore 
  evident 
  in 
  profile 
  view). 
  

   P>ont 
  flattened, 
  ridges 
  above 
  eyes 
  prominent. 
  Head 
  and 
  rostrum 
  

   I)ractically 
  impunctate. 
  Pronotum 
  slightly 
  less 
  than 
  twice 
  as 
  wide 
  as 
  

   long, 
  base 
  one-fifth 
  wider 
  than 
  apex, 
  sides 
  evenly 
  arcuate; 
  anterior 
  

   margin 
  slightly 
  produced, 
  posterior 
  margin 
  transverse, 
  very 
  slightly 
  

   sinuate; 
  disk 
  deeply, 
  coarsely, 
  and 
  rather 
  sparsely 
  punctate; 
  median 
  

   impression 
  vague, 
  subobsolescent 
  in 
  some 
  specimens. 
  Elytra 
  inflated, 
  

   widest 
  before 
  the 
  middle; 
  striae 
  fine, 
  their 
  punctures 
  large 
  and 
  shallow; 
  

   interspaces 
  with 
  white 
  or 
  tawny 
  subrecumbent 
  setae. 
  Legs 
  moderately 
  

   stout, 
  apices 
  of 
  hind 
  tibiae 
  subtruncate, 
  with 
  two 
  rows 
  of 
  spines, 
  the 
  

   outer 
  row 
  short, 
  sometimes 
  absent. 
  

  

  Measurement'^ 
  in 
  Tnillimrters. 
  -Jjonpth 
  r).2 
  to 
  (5.8; 
  width 
  .'i.O 
  to 
  4.0. 
  

  

  Female 
  genitalia 
  (fig. 
  75, 
  a, 
  b, 
  c, 
  d, 
  e). 
  — 
  (lonitnl 
  tube 
  slightly 
  laterally 
  

   compressed, 
  base 
  wider 
  than 
  apo.\ 
  as 
  viewed 
  from 
  above, 
  unevenly 
  

   chitini/.ed, 
  setnimembranous 
  with 
  rods 
  of 
  chitin 
  apicnlly. 
  A})icnl 
  plate 
  

   of 
  moderate 
  size, 
  broadly 
  rounded, 
  coxites 
  large; 
  styli 
  large; 
  .seminal 
  

   receptacle 
  large, 
  sharply 
  curved, 
  the 
  nodus 
  globular, 
  the 
  ductus 
  

   recept»iculi 
  long, 
  cylindrical, 
  and 
  the 
  ramus 
  practically 
  nonexistent. 
  

  

  Afnle 
  fjenitnlia 
  (fig. 
  7'),/, 
  </).- 
  - 
  -Nfedian 
  lobe 
  heavily 
  chitinized, 
  as 
  seen 
  

   in 
  i)rofile, 
  thick, 
  slightly 
  curved 
  near 
  base, 
  apical 
  two-thirds 
  nearly 
  

   straight; 
  from 
  above, 
  apical 
  half 
  broadly 
  dilated, 
  very 
  deeply 
  ex- 
  

   cavated, 
  margins 
  sinuate, 
  apex 
  broadly 
  rounded, 
  very 
  slightly 
  emar- 
  

  

  