﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHRYASTIXI 
  DAVIS 
  501 
  

  

  Male 
  genitalia 
  (fifj. 
  53, 
  a). 
  — 
  Median 
  lobe 
  heavily 
  chitinized, 
  sharply 
  

   curved, 
  heavy 
  at 
  base, 
  not 
  deeply 
  excavated 
  above 
  near 
  the 
  apex; 
  

   median 
  orilice 
  broaiUy 
  oval. 
  

  

  Type 
  locality. 
  — 
  Virgin 
  River, 
  Utah. 
  

  

  Types. 
  — 
  Holotype 
  female, 
  allotype 
  male, 
  and 
  four 
  paratypes, 
  

   I'.S.X.M. 
  No. 
  50709. 
  The 
  male 
  allotype 
  and 
  one 
  male 
  paratype 
  are 
  

   labeled 
  "U. 
  T."; 
  the 
  three 
  paratypes 
  (one 
  male 
  and 
  two 
  females) 
  are 
  

   from 
  Virgin 
  River, 
  Utah. 
  A 
  female 
  specimen 
  that 
  may 
  be 
  con- 
  

   sidered 
  a 
  paratype 
  is 
  in 
  the 
  collection 
  of 
  the 
  Academy 
  of 
  Natural 
  

   Sciences 
  of 
  Philadelphia. 
  

  

  Remarks. 
  — 
  In 
  only 
  one 
  of 
  the 
  seven 
  specimens 
  studied 
  is 
  the 
  median 
  

   sulcus 
  of 
  the 
  rostrum 
  present, 
  and 
  in 
  one 
  specimen 
  the 
  lateral 
  sulci 
  

   also 
  are 
  absent. 
  In 
  one 
  specimen 
  the 
  front 
  bears 
  a 
  trace 
  of 
  a 
  median 
  

   carina. 
  This 
  species 
  may 
  be 
  distinguished 
  from 
  its 
  nearest 
  relatives 
  

   by 
  characters 
  of 
  the 
  genitalia, 
  the 
  absence 
  of 
  rostral 
  sulci, 
  and 
  the 
  

   color. 
  

  

  EUPAGODERES 
  MORTIVALLIS 
  Fall 
  

  

  Figure 
  54 
  

   Euyngodcres 
  mortivaUis 
  Fall, 
  1910, 
  p. 
  192. 
  

  

  Robust, 
  inflated, 
  silvery 
  white, 
  usually 
  more 
  or 
  less 
  irrorate 
  with 
  

   f)lumbeous 
  ; 
  a 
  median 
  and 
  two 
  lateral 
  vittae 
  on 
  the 
  pronotum 
  plumbeous 
  ; 
  

   middle 
  of 
  pronotal 
  disk 
  and 
  sutural 
  interval 
  fulvous 
  or 
  lemon-yellow. 
  

   Rostrum 
  only 
  moderately 
  stout, 
  sharply 
  arched 
  near 
  apex 
  above, 
  not 
  

   or 
  hardly 
  constricted 
  at 
  base 
  beneath; 
  median 
  sulcus 
  very 
  fine, 
  

   nearly 
  obsolete 
  in 
  some 
  specimens; 
  lateral 
  sulci 
  short, 
  shallow, 
  diverg- 
  

   ing 
  apically. 
  Transverse 
  impression 
  between 
  head 
  and 
  rostrum 
  

   present, 
  but 
  usually 
  feeble. 
  Head 
  rounded, 
  front 
  slightly 
  flattened, 
  

   very 
  finely, 
  sparsely 
  punctate; 
  rostrum 
  more 
  coarsely 
  and 
  closely 
  

   punctate. 
  Pronotum 
  wider 
  than 
  long, 
  widest 
  at 
  middle; 
  apex 
  

   slightly 
  constricted; 
  disk 
  finely, 
  sparsely 
  punctate, 
  median 
  sulcus 
  

   nearly 
  or 
  quite 
  larking. 
  ?]lytra 
  from 
  about 
  one-third 
  longer 
  than 
  

   wide 
  to 
  a 
  little 
  less 
  than 
  twice 
  as 
  long 
  as 
  wide, 
  widest 
  at 
  about 
  the 
  

   aj)i(al 
  (tiic-tliinl, 
  truncate 
  at 
  base; 
  elytral 
  striae 
  finely 
  impressed, 
  

   punctures 
  fine; 
  intervals 
  subef|ual 
  in 
  width 
  except 
  the 
  first 
  (sutural), 
  

   whirh 
  is 
  narrow 
  and 
  cf)nvex. 
  Legs 
  moderately 
  robust, 
  tibiae 
  finely 
  

   denticulate 
  within; 
  posterior 
  tibiae 
  obliquely 
  truncate. 
  

  

  AleasuremertfM 
  in 
  j/tillimelers. 
  — 
  Length 
  12 
  to 
  IS. 
  

  

  Female 
  genitalia 
  ((ig. 
  54, 
  a, 
  b, 
  c). 
  — 
  (Jenital 
  tube 
  heavily 
  chitinized, 
  

   tubular; 
  apical 
  plates 
  moderate 
  in 
  size, 
  curved 
  downward 
  him! 
  slightly 
  

   concave 
  beneath; 
  coxites 
  large, 
  fleshy 
  in 
  a[)pearMnce; 
  styli 
  moderate 
  

   in 
  size, 
  set 
  upon 
  the 
  dorsal 
  face 
  of 
  iUv. 
  coxites 
  halfway 
  between 
  base 
  

   and 
  ai)ex. 
  Eighth 
  stemito 
  broadly 
  rounded 
  and 
  very 
  l)roadly, 
  

   shallowly 
  emarginate 
  at 
  apex. 
  

  

  