﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHRYASTINI 
  DAVIS 
  493 
  

  

  16. 
  Pronotuin 
  tincly 
  punctate 
  17 
  

  

  Pronotuin 
  more 
  coarsely 
  punctate 
  21 
  

  

  17. 
  Sutural 
  intervals 
  of 
  elytra 
  fulvous. 
  Length 
  12 
  to 
  18 
  mm... 
  mortivallis 
  Fall 
  

   Sutural 
  intervals 
  of 
  elytra 
  not 
  fulvous. 
  Length 
  7 
  to 
  12 
  mm 
  18 
  

  

  IS. 
  Scales 
  opalescent 
  19 
  

  

  Scales 
  not 
  opalescent 
  20 
  

  

  19. 
  Front 
  of 
  head 
  convex; 
  sulcus 
  of 
  rostrum 
  linear, 
  vague; 
  apices 
  of 
  hind 
  tibiae 
  

  

  obliquely 
  narrowed, 
  not 
  truncate 
  setOBUs 
  Van 
  Dyke 
  

  

  Front 
  of 
  head 
  slightly 
  llattened; 
  median 
  sulcus 
  of 
  rostrum 
  usually 
  lacking; 
  

   apices 
  of 
  hind 
  tibiae 
  obliquely 
  truncate 
  aeneus, 
  new 
  species 
  

  

  20. 
  Color 
  whitish 
  to 
  cinereous, 
  marmorate 
  with 
  darker 
  gray., 
  varius 
  (LcConte) 
  

   Color 
  pinkish 
  cinereous, 
  feebly 
  mottled 
  with 
  gray; 
  vertex 
  flattened 
  and 
  finely 
  

  

  carinate 
  in 
  the 
  type 
  specimen 
  arldus 
  Fall 
  

  

  Color 
  gray 
  or 
  brown, 
  even 
  numbered 
  elytral 
  intervals 
  darker. 
  

  

  getninatus 
  Horn* 
  

  

  21. 
  Median 
  sulcus 
  of 
  rostrum 
  narrow 
  _ 
  22 
  

  

  Median 
  sulcus 
  of 
  rostrum 
  broad 
  24 
  

  

  22. 
  Rostrum 
  more 
  robust, 
  apex 
  markedly 
  depressed; 
  Texas, 
  simulans 
  Van 
  Dyke 
  

   Rostrum 
  le.ss 
  robust, 
  apex 
  not 
  so 
  markedly 
  depressed; 
  California 
  23 
  

  

  23. 
  Plumbeous; 
  unicolorous 
  or 
  nearly 
  .so. 
  

  

  varius 
  (LeConte), 
  variety 
  plutabeus 
  Horn 
  

  

  Gray, 
  variously 
  marked 
  with 
  plumbeous 
  or 
  black, 
  even 
  numbered 
  elytral 
  

  

  intervals 
  darker. 
  _ 
  geminatus 
  Horn 
  

  

  24. 
  Median 
  sulcus 
  of 
  rostrum, 
  when 
  present, 
  terminating 
  at 
  junction 
  with 
  

  

  head... 
  25 
  

  

  Median 
  sulcus 
  of 
  rostrum 
  extending 
  onto 
  the 
  front 
  pilosus, 
  new 
  species 
  

  

  25. 
  Elytral 
  striae 
  not, 
  or 
  feebly, 
  impressed, 
  punctures 
  large, 
  separate 
  26 
  

  

  Elytral 
  striae 
  more 
  distinctly 
  impressed, 
  punctures 
  finer 
  27 
  

  

  26. 
  Scaly 
  vestiture 
  white 
  with 
  black 
  or 
  plumbeous 
  ocellatc 
  spots; 
  elytral 
  striae 
  

  

  not 
  impressed 
  marmoratus 
  Fall 
  

  

  Scaly 
  vestiture 
  black, 
  brown, 
  and 
  white, 
  without 
  occllate 
  spots; 
  elytral 
  striae 
  

   slightly 
  impressed 
  at 
  base 
  and 
  apex 
  huachuacae 
  Van 
  Dyke 
  

  

  27. 
  Rostrum 
  with 
  a 
  median 
  sulcus 
  28 
  

  

  Rostrum 
  without 
  a 
  median 
  sulcus 
  31 
  

  

  28. 
  Robust, 
  dorsum 
  flattened 
  griaeuB, 
  new 
  species 
  

  

  Less 
  robust, 
  dorsum 
  not 
  or 
  very 
  slightly 
  flattened.. 
  29 
  

  

  29. 
  Lateral 
  rostral 
  sulci 
  linear 
  halli 
  Van 
  Dyke 
  

  

  Lateral 
  rostral 
  sulci 
  arcuate 
  30 
  

  

  30. 
  Form 
  more 
  parallel; 
  elytra 
  confusedly 
  mottled 
  sordidus 
  (I^eConte) 
  

  

  Form 
  le.ss 
  parallel; 
  alternate 
  (even) 
  elytral 
  intervals 
  darker, 
  geniinatus 
  Horn 
  

  

  31. 
  Scales 
  whitish 
  to 
  cinereous, 
  marmorate 
  with 
  darker 
  gray 
  . 
  varius 
  (Lc(^onte) 
  

   Scales 
  i)inkish 
  cinereous, 
  feebly 
  mottled 
  with 
  gray 
  aridus 
  Fall 
  

  

  The 
  following 
  key 
  makes 
  use 
  of 
  the 
  feiniile 
  genitalia 
  for 
  dividing 
  the 
  

   genus 
  into 
  groups; 
  the 
  species 
  of 
  each 
  group 
  are 
  then 
  separated 
  

   largely 
  upon 
  external 
  characters. 
  

  

  KEY 
  TO 
  GROUPS 
  OP 
  EUPAGODERE8 
  

  

  Eightli 
  stfrnite 
  thir), 
  npcx 
  rounded, 
  rmarginnti", 
  or 
  i)oin(ed, 
  but 
  not 
  producrrl. 
  

   Female 
  genitalia 
  tubular. 
  

  

  Female 
  genitalia 
  heavily 
  chilinizcd, 
  H|)iral 
  plate 
  prominent, 
  styli 
  small. 
  

  

  desertus 
  group, 
  I 
  

   • 
  Kcfcr 
  to 
  note 
  at 
  end 
  of 
  Eupagodert* 
  sortlon 
  ri>ear<llng 
  E. 
  tUahentii 
  Tannrr 
  and 
  /?. 
  hardyi 
  Tanner. 
  

  

  