﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHRYASTINI 
  — 
  DAVIS 
  503 
  

  

  Types. 
  — 
  Holotype 
  female 
  and 
  allotype 
  male, 
  Baker, 
  Calif., 
  U.S.N.M. 
  

   No. 
  56770. 
  One 
  partitypo 
  female, 
  Needles, 
  Calif., 
  in 
  my 
  collection 
  

   [now 
  in 
  collection 
  of 
  L. 
  J. 
  Bottimer]. 
  One 
  paratvpe 
  in 
  the 
  collection 
  

   of 
  H. 
  C. 
  Fall. 
  

  

  Remarks. 
  — 
  With 
  this 
  variety 
  is 
  tentatively 
  included 
  a 
  specimen 
  

   from 
  Death 
  Valley, 
  Calif., 
  wiiich 
  is 
  uniform 
  gray, 
  the 
  suture 
  narrowly 
  

   fulvous, 
  the 
  striae 
  of 
  a 
  blackish 
  tinge, 
  and 
  the 
  head 
  and 
  pronotum 
  

   yellow-frray. 
  

  

  This 
  is 
  merely 
  a 
  color 
  form 
  of 
  E. 
  mortivallis 
  Fall, 
  but 
  it 
  differs 
  so 
  

   markedly 
  in 
  appearance 
  and 
  color 
  from 
  that 
  species 
  that 
  it 
  has 
  caused 
  

   some 
  confusion, 
  and 
  for 
  that 
  reason 
  it 
  has 
  been 
  thought 
  well 
  to 
  give 
  

   it 
  a 
  name. 
  

  

  II. 
  ROBUSTUS 
  group 
  

  

  Included 
  at 
  present 
  is 
  a 
  single 
  species: 
  

  

  EUPAGODERES 
  ROBUSTUS. 
  new 
  specie* 
  

  

  Figure 
  55 
  

  

  Form 
  robust, 
  elytra 
  greatly 
  inflated; 
  color 
  uniform 
  gray-white; 
  

   scales 
  feebly 
  imbricated 
  on 
  elytra. 
  Rostrum 
  stout, 
  moderately 
  

   arched 
  dorsally; 
  median 
  sulcus 
  lacking; 
  lateral 
  sulci 
  short, 
  rather 
  

   shallow, 
  arcuate, 
  convergent 
  at 
  base 
  of 
  rostrum. 
  Head 
  evenly 
  

   rounded; 
  head 
  and 
  rostrum 
  moderately 
  finely, 
  evenly 
  punctate, 
  a 
  

   short 
  white 
  seta 
  in 
  each 
  puncture. 
  Pronotum 
  one-seventh 
  wdder 
  than 
  

   long, 
  widest 
  at 
  apical 
  two-fifths, 
  base 
  one-fifth 
  wider 
  than 
  apex, 
  sides 
  

   evenly 
  rounded; 
  disk 
  moderately 
  coarsely, 
  rather 
  closely 
  punctate, 
  

   the 
  median 
  groove 
  rather 
  line. 
  El3^tra 
  inflated, 
  together 
  almost 
  one- 
  

   third 
  longer 
  than 
  wide, 
  widest 
  at 
  basal 
  one-third; 
  humeri 
  not 
  devel- 
  

   oped, 
  but 
  elytra 
  tnmcate 
  and 
  swelling 
  abruptly 
  from 
  base, 
  wider 
  at 
  

   base 
  than 
  the 
  base 
  of 
  the 
  pronotum; 
  strial 
  punctures 
  very 
  coarse, 
  

   round, 
  deep, 
  and 
  not 
  confluent; 
  intervals 
  2, 
  4, 
  and 
  6 
  very 
  slightly 
  

   wider, 
  flat; 
  intervals 
  8, 
  5, 
  and 
  7 
  elevated; 
  setae 
  extremely 
  minute, 
  

   not 
  or 
  hardly 
  visible 
  at 
  a 
  magnification 
  of 
  aboiit 
  80 
  diameters. 
  Legs 
  

   only 
  moderately 
  stout, 
  tibiae 
  not 
  api)areritly 
  denticulate. 
  

  

  Measurements 
  in 
  millimeters. 
  — 
  Length 
  9.5 
  to 
  12.4. 
  

  

  Female 
  genitalia 
  (fig. 
  55, 
  a, 
  6, 
  c). 
  — 
  Genital 
  tube 
  lightly 
  chitini/.ed, 
  

   subconical, 
  apical 
  plate 
  lacking, 
  co.xites 
  and 
  styli 
  extremely 
  minute. 
  

   Eighth 
  sternite 
  of 
  decipiens 
  type, 
  acut^, 
  apex 
  truncate 
  or 
  slightly 
  

   emarginate, 
  and 
  hairy. 
  

  

  Male 
  genitalia 
  (fig. 
  55, 
  d). 
  — 
  Median 
  lobe 
  heavily 
  chitiiiizcd, 
  mod- 
  

   erately 
  curved 
  and 
  thick 
  at 
  apex 
  as 
  viewed 
  from 
  the 
  side; 
  from 
  ai)ove 
  

   short 
  and 
  rather 
  broad, 
  very 
  slightly 
  diluted 
  at 
  a[)ical 
  one-third, 
  apex 
  

   broadly, 
  evenly 
  rounded, 
  not 
  deeply 
  excavated 
  above. 
  

  

  Type 
  locality.—" 
  20 
  mi. 
  west 
  of 
  Yuma, 
  Calif. 
  X-27-24." 
  

  

  Types. 
  — 
  Holotype 
  female, 
  allotype 
  male, 
  and 
  paratypo 
  female, 
  the 
  

  

  