﻿WEEVILS 
  OF 
  THE 
  TRIRE 
  OPURYASTINI 
  DAVIS 
  549 
  

  

  membranous, 
  with 
  two 
  doi-sal 
  rods, 
  or 
  hnculi, 
  of 
  heavy 
  chitin. 
  The 
  

   apical 
  plates 
  are 
  curved, 
  concave 
  dorsally, 
  having 
  a 
  tul)ular 
  appearance. 
  

  

  Male 
  gthitalia 
  (fig. 
  77, 
  ^,/)-^^ 
  Median 
  lobe 
  thick, 
  evenly 
  curved 
  

   from 
  base 
  to 
  apex, 
  very 
  (hn'ply 
  excavated 
  apicallv 
  to 
  the 
  median 
  

   orifice. 
  

  

  Type 
  locality. 
  — 
  Southern 
  part 
  of 
  California. 
  

  

  Specimens 
  have 
  been 
  examined 
  from 
  the 
  following 
  localities, 
  all 
  

   in 
  California: 
  Orange 
  County 
  (A. 
  C. 
  Davis); 
  Pasadena*(A. 
  C. 
  Davis); 
  

   Cabazon 
  (A. 
  C. 
  Davis); 
  Aguanga 
  (A. 
  C. 
  Davis). 
  

  

  [The 
  National 
  Museum 
  collection 
  contains 
  a 
  considerable 
  nund)er 
  

   of 
  Rhigopsis 
  specimens 
  from 
  various 
  places 
  hi 
  the 
  southern 
  part 
  of 
  

   California, 
  which 
  Davis 
  had 
  not 
  examined.) 
  

  

  BHIGOPSIS 
  SIMPLEX 
  Horn 
  

  

  Rhigopsis 
  simplex 
  Hobn, 
  1894, 
  p. 
  442. 
  

  

  Form 
  much 
  as 
  in 
  R. 
  ejfracta 
  LeConte, 
  but 
  appears 
  to 
  be 
  slightly 
  

   more 
  flattened 
  above. 
  Head 
  gray-brown, 
  pronotum 
  grayish, 
  with 
  

   a 
  wide 
  central 
  and 
  two 
  narrower 
  lateral 
  stripes 
  brovsTi; 
  elytral 
  disk 
  

   brown, 
  mottled 
  with 
  blackish, 
  sides 
  of 
  elytra 
  gray 
  or 
  gray-brown; 
  legs 
  

   and 
  body 
  beneath 
  gray 
  to 
  light 
  brown. 
  Rostrum 
  stout, 
  constricted 
  

   ba-sally 
  beneath, 
  markedly 
  arched 
  above, 
  separated 
  from 
  the 
  front 
  by 
  

   a 
  transverse 
  groove. 
  Median 
  sulcus 
  sharp, 
  deep, 
  not 
  interrupted 
  

   apically, 
  extending 
  to 
  the 
  occiput; 
  lateral 
  sulci 
  deep 
  basally, 
  invisible 
  

   apically. 
  Head 
  with 
  the 
  ridges 
  above 
  the 
  eyes 
  well 
  developed, 
  

   subtuberculate. 
  Pronotum 
  more 
  than 
  one-third 
  longer 
  than 
  wide, 
  

   widest 
  at 
  basal 
  fourth; 
  striae 
  slightly 
  impressed, 
  punctures 
  large, 
  

   round, 
  separate; 
  elytral 
  mterval 
  two 
  elevated, 
  and 
  mtervals 
  4, 
  5, 
  6, 
  

   and 
  7 
  elevated 
  together, 
  terminating 
  abruptly 
  apically 
  leaving 
  a 
  small 
  

   tubercle. 
  Vestiture 
  throughout 
  imbricate, 
  scales 
  round 
  or 
  nearly 
  

   ho; 
  setae 
  semierect 
  or 
  erect, 
  brownish 
  on 
  head 
  and 
  pronotum, 
  white 
  

   on 
  elytral 
  intervals, 
  body 
  beneath, 
  and 
  legs. 
  Legs 
  stout; 
  apices 
  

   of 
  hind 
  tibiae 
  not 
  truncated, 
  and 
  with 
  a 
  row 
  of 
  large 
  spines 
  at 
  apex. 
  

  

  Meaaurements 
  in 
  millinieters. 
  Length 
  5.0; 
  width 
  2..'^ 
  

  

  The 
  genitalia 
  of 
  this 
  specimen 
  seem 
  to 
  be 
  identical 
  with 
  those 
  of 
  

   females 
  of 
  R. 
  ejfracta. 
  

  

  Type 
  locality. 
  — 
  Calmalli 
  Mines 
  [Lower 
  Californial. 
  

  

  The 
  above 
  description 
  is 
  that 
  of 
  a 
  single 
  female 
  specimen 
  in 
  the 
  

   collection 
  of 
  the 
  l'. 
  S. 
  National 
  Museum, 
  collect«!d 
  at 
  San 
  Ysidro, 
  

   Calif., 
  May 
  2.1. 
  It 
  was 
  Um\n\ 
  alive 
  upon 
  NeoimimmUlaria 
  sp. 
  from 
  

   Ix)wer 
  California. 
  

  

  [Horn 
  (1894, 
  p. 
  442), 
  after 
  describing 
  Rhigop.fi.i 
  nimplej, 
  says: 
  "This 
  

   species 
  may 
  be 
  known 
  from 
  ejfracta 
  by 
  the 
  absence 
  of 
  tuberosities, 
  

   the 
  feeble 
  elytral 
  costae 
  and 
  the 
  almost 
  entire 
  absence 
  of 
  latcnd 
  

   rostral 
  sulci.") 
  

  

  