﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHRYASTINI 
  — 
  DAVIS 
  487 
  

  

  in 
  cases 
  where 
  the 
  genital 
  tube 
  is 
  Ughtly 
  chitinized, 
  as 
  in 
  Eupagoderes 
  

   decipiens. 
  

  

  Coxites 
  (CX) 
  : 
  Ventral 
  appendages 
  on 
  either 
  side 
  of 
  the 
  apex 
  of 
  

   the 
  female 
  genital 
  tube, 
  presumably 
  borne 
  by 
  the 
  tenth 
  segment, 
  and 
  

   carrying 
  the 
  st3'li 
  (fig. 
  49, 
  6, 
  c). 
  They 
  arc 
  generally 
  lobelike, 
  but 
  

   occasionally 
  they 
  broaden 
  into 
  plates, 
  and 
  may 
  take 
  the 
  place 
  of 
  the 
  

   apical 
  plates, 
  which 
  then 
  usually 
  become 
  lobeliko, 
  

  

  Cornu 
  (CU): 
  Part 
  of 
  the 
  rcceptaculum 
  scminis 
  (fig. 
  49, 
  d). 
  

  

  Genital 
  tube: 
  The 
  tubclike 
  protrusible 
  portion 
  of 
  the 
  female 
  genitalia. 
  

  

  Median 
  lobe 
  (ML) 
  : 
  The 
  central 
  portion 
  of 
  the 
  aedeagus 
  upon 
  which 
  

   the 
  median 
  orifice 
  is 
  situated. 
  Usually 
  considered 
  the 
  penis 
  (fig. 
  49, 
  

  

  ej). 
  

  

  Median 
  orifice 
  (MO): 
  The 
  opening 
  upon 
  the 
  dorsal 
  surface 
  of 
  the 
  

   median 
  lobe 
  through 
  which 
  the 
  internal 
  sac 
  is 
  evaginated 
  (fig. 
  49,/). 
  

  

  Nodulw<i 
  (ND): 
  Part 
  of 
  the 
  rcceptaculum 
  seminis 
  (fig. 
  49, 
  d). 
  

  

  Ramus 
  (KM): 
  Part 
  of 
  the 
  rcceptaculum 
  seminis 
  (fig. 
  49, 
  d). 
  

  

  nec£2)taculum 
  seininis: 
  Divided 
  into 
  the 
  cornu 
  (CU); 
  nodulus 
  

   (ND); 
  and 
  ramus 
  (KM) 
  (fig. 
  40, 
  (/). 
  

  

  Siyli 
  (ST): 
  Cercuslike 
  appendages 
  borne 
  by 
  the 
  coxites 
  (fig. 
  49, 
  c). 
  

  

  The 
  Ophryastini 
  are 
  characterized 
  briefly 
  as 
  follows: 
  

  

  Ocular 
  lobes 
  present, 
  partially 
  covering 
  the 
  eyes, 
  which 
  are 
  usually 
  

   elongate, 
  transverse, 
  and 
  acuminate 
  beneath. 
  Mentum 
  large, 
  cover- 
  

   ing 
  the 
  maxillae 
  (except 
  in 
  Caccophryastes 
  Sharp, 
  in 
  which 
  the 
  palpi 
  

   project 
  bej'ond 
  the 
  mentum). 
  Antennal 
  scrobe 
  well 
  defined, 
  lateral, 
  

   directed 
  beneath 
  the 
  eye. 
  Rostrum 
  robust, 
  quadrangular, 
  its 
  dorsal 
  

   surface 
  often 
  with 
  three 
  longitudinal 
  grooves 
  or 
  striae, 
  a 
  median 
  one, 
  

   and 
  one 
  each 
  side 
  of 
  the 
  median, 
  the 
  two 
  latter 
  called 
  lateral 
  striae, 
  

   lateral 
  grooves, 
  or 
  lateral 
  sulci. 
  

  

  Tho 
  New 
  World 
  genera 
  of 
  the 
  Ophryastini 
  may 
  be 
  separated 
  by 
  

   the 
  following 
  key, 
  which 
  is 
  a 
  mollification 
  of 
  the 
  one 
  by 
  Pierce 
  (1913, 
  

   pp. 
  373-374): 
  

  

  KEY 
  TO 
  NEW 
  WORLD 
  GENERA 
  OF 
  OPHRYASTINI 
  

  

  1. 
  Abdomen 
  with 
  second 
  segment 
  rarely 
  as 
  lonp 
  as 
  the 
  third 
  and 
  fourth 
  topnthcr, 
  

  

  first 
  Hutiirc 
  fitraiglit. 
  Intcrcoxal 
  process 
  of 
  abdomen 
  moderately 
  wide. 
  2 
  

  

  Abdomen 
  with 
  second 
  segment 
  longer 
  than 
  the 
  third 
  and 
  fourth 
  together, 
  

  

  first 
  Huturo 
  strongly 
  arcuate. 
  Intcrcoxal 
  procoKS 
  very 
  broad 
  8 
  

  

  2. 
  Thirfl 
  tarsal 
  joint 
  pubescent 
  beneath, 
  broadly 
  bilobed, 
  distinctly 
  wider 
  

  

  than 
  second 
  _ 
  3 
  

  

  Third 
  tarsal 
  joint 
  not 
  pubescent 
  beneath, 
  not 
  broadly 
  bilohcd, 
  not 
  or 
  only 
  

   slightly 
  wider 
  than 
  second, 
  cnmrgiiiat«r 
  at 
  apex; 
  rostral 
  striae 
  straight. 
  7 
  

  

  3. 
  Rostral 
  striae 
  narrow, 
  deep 
  (though 
  often 
  partially 
  obscured 
  by 
  the 
  dense 
  

  

  coating 
  of 
  scales), 
  the 
  lateral 
  ones 
  abruptly 
  bent 
  outward 
  at 
  bB.se 
  of 
  beak, 
  

   thence 
  extending 
  downward 
  on 
  side 
  of 
  beak, 
  and 
  ending 
  next 
  to 
  eye 
  near 
  

   upper, 
  basal 
  edge 
  of 
  8crol)c; 
  basal 
  margins 
  of 
  elytra 
  elevated; 
  second 
  segment 
  

   of 
  abdomen 
  nearly 
  as 
  long 
  as 
  the 
  third 
  and 
  fourth 
  combined 
  ...Sapotes 
  Casey 
  

  

  