﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHRYASTINI 
  DAVIS 
  513 
  

  

  very 
  rarely 
  Inckino:, 
  and 
  are 
  ocellate 
  with 
  buff 
  or 
  tawny 
  centers. 
  In 
  

   certain 
  small 
  specimens 
  examinetl 
  the 
  elytra 
  are 
  unicolorous 
  gray 
  or 
  

   white, 
  nearly 
  or 
  quite 
  lacking 
  markings, 
  the 
  front 
  of 
  the 
  head 
  or 
  

   rostrum 
  or 
  both 
  strongly 
  marked 
  with 
  black. 
  The 
  third 
  tarsal 
  joint 
  

   in 
  many 
  specimens 
  is 
  no 
  wider, 
  perhaps 
  a 
  little 
  narrower, 
  than 
  the 
  

   second. 
  

  

  Mtasurements 
  in 
  millimeters. 
  — 
  Length 
  10 
  to 
  17, 
  averaging 
  about 
  14. 
  

  

  The 
  genitaha 
  of 
  both 
  se.xes 
  are 
  identical 
  with 
  those 
  of 
  E. 
  nirosus 
  

   Fall. 
  It 
  is 
  possible 
  that 
  this 
  species 
  represents 
  a 
  race 
  or 
  variety 
  of 
  

   E. 
  nirosus. 
  

  

  Type 
  locality. 
  — 
  Tucson, 
  Ariz. 
  

  

  Specimens 
  of 
  E. 
  marmoratus 
  Fall 
  have 
  been 
  seen 
  from 
  the 
  following 
  

   Arizona 
  localities: 
  Tucson 
  (Wickham; 
  J. 
  W. 
  Toumy; 
  G. 
  Hofer); 
  

   Rice 
  (D. 
  K. 
  Duncan); 
  Florence 
  (C. 
  R. 
  Biederman) 
  ; 
  Phoenix 
  (J. 
  S. 
  

   Tait); 
  Globe 
  (D. 
  K. 
  Duncan); 
  Wellington 
  Well, 
  Quitotoa 
  Mountains. 
  

  

  EUPAGODERES 
  SORDIDUS 
  (LeConte) 
  

  

  Figure 
  59 
  

   Ophryastes 
  sordidus 
  LeConte, 
  1853, 
  p. 
  445. 
  

  

  Color 
  usually 
  some 
  shade 
  of 
  gray, 
  irregularly 
  mottled 
  with 
  white 
  

   and 
  brown 
  or 
  dark 
  gray, 
  but 
  three 
  male 
  specimens 
  from 
  Vaughn, 
  N. 
  

   Mex., 
  in 
  the 
  United 
  States 
  National 
  Museum 
  collection 
  are 
  pre- 
  

   domijiantly 
  light 
  browii 
  mottled 
  with 
  gray 
  and 
  white. 
  In 
  the 
  

   lighter-colored 
  specimens 
  thore 
  is 
  a 
  brown 
  median 
  lino 
  upon 
  the 
  front 
  

   and 
  a 
  brown 
  patch 
  above 
  each 
  eye. 
  Tlu; 
  pronotum 
  usually 
  has 
  a 
  

   rather 
  wide 
  browTi 
  vitta 
  at 
  either 
  side. 
  Rostrum 
  rather 
  short, 
  not 
  

   very 
  stout, 
  trisulcate, 
  the 
  median 
  sulcus 
  sharply 
  defined 
  and 
  ejuling 
  

   abruptly 
  at 
  the 
  junction 
  of 
  the 
  head 
  and 
  rostrum, 
  apically 
  either 
  

   extending 
  to 
  the 
  apex 
  of 
  the 
  rostrum 
  or 
  ending 
  abruptly 
  about 
  oppo- 
  

   site 
  the 
  antejinal 
  insertions; 
  lateral 
  sulci 
  deep, 
  nearly 
  straight, 
  usually 
  

   slightly 
  divergent 
  at 
  the 
  base; 
  of 
  the 
  rostrum. 
  Rostrum 
  constricted 
  

   at 
  base 
  beneath 
  niid 
  usually 
  not 
  evenly 
  continuous 
  with 
  the 
  front 
  

   above, 
  as 
  in 
  most 
  specimens 
  the 
  head 
  and 
  rostrum 
  have 
  slight 
  sei)a- 
  

   rate 
  convexities 
  as 
  viewed 
  from 
  the 
  sifle. 
  Punctation 
  of 
  projiotum 
  

   rather 
  coarse, 
  but 
  sparse, 
  coarser 
  und 
  closer 
  at 
  the 
  sides. 
  P^lytral 
  

   striae 
  fine 
  but 
  usually 
  distinct, 
  in 
  some 
  specimens 
  becoming 
  obsolete 
  

   in 
  the 
  center 
  of 
  the 
  disk. 
  The 
  three 
  lateral 
  striae; 
  on 
  each 
  side 
  usuallv 
  

   consisting 
  of 
  rows 
  of 
  large, 
  oblifjue 
  punctures, 
  the 
  other 
  striae 
  im- 
  

   pressed, 
  tjie 
  i)unctures 
  connected. 
  Legs 
  rather 
  thin, 
  tibiae 
  not 
  

   denticulate 
  within, 
  post<'rior 
  tibiae; 
  truncate, 
  tin; 
  truncation 
  wide, 
  

   glabrous, 
  and 
  usually 
  slightly 
  elctvated. 
  'JMiere 
  seems 
  to 
  be 
  very 
  

   little 
  sexual 
  difference 
  in 
  the 
  tarsi 
  of 
  this 
  species. 
  

  

  Mea-Hnremrnts 
  in 
  millimeters. 
  — 
  Ixmgth 
  0.2 
  to 
  10.6. 
  

  

  Female 
  genitalia 
  (fig. 
  59, 
  a, 
  h, 
  c, 
  d).- 
  — 
  Genital 
  tube 
  stout 
  and 
  short; 
  

   apical 
  plates 
  heavily 
  chitini/.ed, 
  small, 
  pointed, 
  close 
  to 
  tlu^ 
  midline, 
  

  

  