﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHRYASTINI 
  — 
  DAVIS 
  541 
  

  

  Measurements 
  in 
  millimeters. 
  — 
  Lonsrth 
  5.2 
  to 
  8.6; 
  width 
  2.7 
  to 
  4.4. 
  

  

  Female 
  genitalia 
  (fie:. 
  73, 
  a, 
  b, 
  c, 
  d, 
  e). 
  — 
  Wo(li:o-sli}ii)0(l, 
  apox 
  trun- 
  

   cate, 
  dorsoventrally 
  Hattenod, 
  not 
  heavily 
  cliitinized; 
  apical 
  plates 
  

   flat, 
  broadly 
  rounded 
  at 
  ape.x. 
  Co.xites 
  very 
  large; 
  styli 
  large. 
  

   Eighth 
  sternitc 
  rounded, 
  emarginate 
  at 
  apex. 
  

  

  Male 
  genitalia 
  (fig. 
  73,/, 
  ^7). 
  — 
  Median 
  lobe 
  in 
  profile, 
  evenl}- 
  and 
  

   not 
  greatly 
  curved, 
  thick. 
  From 
  above 
  very 
  slightly 
  dilated 
  at 
  

   apical 
  two-fifths, 
  thence 
  tapering 
  to 
  an 
  acutely 
  rounded 
  apex. 
  There 
  

   is 
  a 
  thin, 
  high 
  median 
  carina, 
  or 
  keel, 
  from 
  the 
  median 
  orifice 
  to 
  the 
  

   apex, 
  dorsally, 
  which 
  is 
  conspicuous 
  from 
  above 
  or 
  from 
  the 
  side. 
  

  

  Type 
  locality. 
  — 
  Monclova, 
  Coahuila, 
  Mexico. 
  

  

  Remarks. 
  — 
  This 
  species 
  may 
  be 
  distinguished 
  from 
  any 
  other 
  ex- 
  

   cept 
  T. 
  humeralis 
  by 
  the 
  acute 
  humeri. 
  From 
  that 
  species 
  it 
  may 
  be 
  

   separated 
  by 
  the 
  abruptly 
  constricted 
  siiles 
  of 
  the 
  thorax, 
  with 
  a 
  

   tooth 
  at 
  the 
  side, 
  at 
  base, 
  and 
  by 
  the 
  more 
  prominent 
  humeri. 
  The 
  

   specimens 
  examined 
  were 
  collected 
  by 
  E. 
  A. 
  Schwarz 
  and 
  F. 
  C. 
  

   Bishopp. 
  

  

  TOSASTES 
  HUMERAUS 
  Sharp 
  

  

  Tosastes 
  humeralis 
  Sharp, 
  1891, 
  p. 
  91. 
  

  

  I 
  have 
  seen 
  no 
  specimen 
  of 
  this 
  species. 
  Sharp's 
  original 
  description 
  

   follows 
  (Latin 
  diagnosis 
  omitted): 
  

  

  Covered 
  with 
  thin 
  scales, 
  which 
  on 
  the 
  anterior 
  parts 
  are 
  almost 
  entirely 
  fused 
  

   into 
  a 
  continuous 
  indument, 
  bearing 
  also 
  some 
  scanty, 
  very 
  short 
  setae. 
  Kostrum 
  

   short, 
  with 
  a 
  broad 
  median 
  groove 
  and 
  a 
  large 
  lateral 
  impression 
  on 
  each 
  side. 
  

   Thorax 
  strongly 
  transverse, 
  very 
  deeply 
  rugose. 
  Elytra 
  quite 
  truncate 
  at 
  the 
  

   base, 
  and 
  with 
  the 
  angles 
  minutely 
  prominent; 
  very 
  closely 
  applied 
  to 
  the 
  base 
  

   of 
  the 
  thorax, 
  and 
  of 
  exactly 
  the 
  same 
  width, 
  so 
  that 
  the 
  two 
  are 
  almost 
  con- 
  

   tinuous 
  in 
  outline; 
  the 
  sculpture 
  consists 
  of 
  vague, 
  large 
  depressions, 
  placed 
  

   in 
  series, 
  and 
  connected 
  by 
  ob.scure 
  striae. 
  Spinulcs 
  at 
  the 
  apex 
  of 
  llic 
  hind 
  tibiae 
  

   excessively 
  short 
  and 
  broad, 
  and 
  very 
  few 
  in 
  number. 
  Two 
  specimens. 
  

  

  "Ix)ng. 
  cumque 
  rostro 
  7-8 
  millim." 
  

  

  Type 
  locality. 
  — 
  Chihuahua 
  City, 
  Mexico. 
  

  

  TOSASTES 
  (;i,()ini,AIlIS 
  I'iircc 
  

  

  FiauRK 
  74 
  

  

  Tosastea 
  rjlobulnriii 
  Pikrck, 
  1909, 
  p. 
  344. 
  

  

  Shape 
  much 
  as 
  in 
  7'. 
  cinerascen-s 
  Pierce. 
  (Iray 
  or 
  dark 
  brown, 
  head 
  

   with 
  brown 
  and 
  black 
  mottlings, 
  pronotum 
  with 
  a 
  wide 
  black 
  median 
  

   stripe, 
  elytra 
  with 
  various 
  markings 
  of 
  ashy 
  gray 
  and 
  black. 
  Rostrum 
  

   stout, 
  constrirted 
  at 
  ba.se 
  beneath, 
  continuous 
  with 
  head 
  above; 
  

   median 
  sulcus 
  lacking; 
  lateral 
  sulci 
  short, 
  subobsolete; 
  scars 
  of 
  decidu- 
  

   ous 
  cusjjs 
  of 
  mandibles 
  much 
  less 
  prominent 
  than 
  in 
  T. 
  cinrra.tcens, 
  

   nearly 
  flush 
  with 
  the 
  lateral 
  face 
  of 
  the 
  mandibles. 
  Front 
  slightly 
  

   flattened. 
  Head 
  and 
  rostrum 
  smooth, 
  nearly 
  or 
  (|nile 
  impunctate, 
  

   and 
  with 
  sparse, 
  minute 
  setae. 
  Pronotum 
  nearly 
  a 
  third 
  w 
  idi 
  r 
  than 
  

  

  