﻿WEEVILS 
  OF 
  THE 
  TRIBE 
  OPHHYASTINI 
  — 
  DAVIS 
  539 
  

  

  Humeral 
  angles 
  minute; 
  sides 
  of 
  prothorax 
  less 
  abruptly 
  constricted 
  before 
  

   the 
  base 
  huineralis 
  Sharp 
  

  

  3. 
  Strial 
  punctures 
  of 
  elytra 
  lonp, 
  fine, 
  connected 
  globularie 
  Pierce 
  

  

  Strial 
  punctures 
  of 
  elytra 
  larpe, 
  rather 
  shallow 
  4 
  

  

  4. 
  Posterior 
  tibiae 
  rounded 
  externally 
  and 
  tipped 
  with 
  a 
  single 
  row 
  of 
  spines 
  5 
  

  

  Posterior 
  tibiae 
  subtruncate 
  and 
  tipped 
  with 
  a 
  doulile 
  row 
  of 
  spines 
  6 
  

  

  5. 
  Elytral 
  striae 
  finely 
  impressed, 
  punctures 
  large 
  and 
  shallow 
  ovalis 
  Pierce 
  

  

  Elytral 
  striae 
  consisting 
  of 
  large, 
  shallow, 
  unconnected 
  punctures. 
  

  

  globipennis 
  Sharp 
  

  

  6. 
  Pronotum 
  slit^htly 
  less 
  than 
  twice 
  as 
  wide 
  as 
  long 
  ovalis 
  Pierce 
  

  

  Pronotum 
  about 
  two-fifths 
  wider 
  than 
  long 
  cinerascens 
  Pierce 
  

  

  KEY 
  TO 
  FOUR 
  SPECIES 
  OF 
  TOSASTES 
  BY 
  FEMALE 
  GENITAUA 
  

  

  1. 
  Apical 
  plates 
  very 
  large, 
  concave 
  above; 
  eiphth 
  sternite 
  with 
  a 
  truncate 
  

  

  tooth 
  at 
  each 
  posterolateral 
  angle, 
  and 
  bidentate 
  or 
  trirlentate 
  separate 
  

  

  median 
  plate 
  at 
  apex 
  cinerascens 
  Pierce 
  

  

  Apical 
  plates 
  small 
  or 
  only 
  moderately 
  large; 
  eighth 
  stcrnito 
  without 
  me- 
  

   dian 
  plate 
  at 
  apex 
  2 
  

  

  2. 
  Eighth 
  sternitc 
  produced 
  at 
  apex, 
  and 
  sharply 
  emarginatc; 
  ar-ical 
  plates 
  

  

  broadly 
  rounded 
  at 
  apex 
  ovalis 
  Pierce 
  

  

  Eighth 
  sternite 
  not 
  produced 
  at 
  apex; 
  aj)ical 
  plates 
  sharper 
  at 
  apex 
  3 
  

  

  3. 
  Apical 
  plates 
  acute 
  at 
  apex, 
  coxites 
  large; 
  stipes 
  long 
  and 
  laterally 
  flattened; 
  

  

  eighth 
  sternite 
  acute, 
  emarginate 
  at 
  apex; 
  ramus 
  and 
  ductus 
  receptaculi 
  of 
  

  

  receptaculum 
  scminis 
  pressed 
  closely 
  together 
  globularis 
  Pierce 
  

  

  Apical 
  plates 
  broadly 
  rounded 
  at 
  apex; 
  coxites 
  smaller; 
  styli 
  greater 
  in 
  diame- 
  

   ter 
  and 
  subcylindrical; 
  eighth 
  sternite 
  broadly, 
  evenly 
  rounded 
  and 
  emargi- 
  

   nate 
  at 
  apex; 
  ramus 
  and 
  ductus 
  receptaculi 
  of 
  receptaculum 
  seminis 
  with 
  

   a 
  space 
  between 
  them 
  coarctatus 
  Champion 
  

  

  KEY 
  TO 
  FOUR 
  SPECIES 
  OF 
  TOSASTES 
  BY 
  MALE 
  GENITALIA 
  

  

  1. 
  Median 
  lobe 
  dilated 
  near 
  apex 
  2 
  

  

  Median 
  lobe 
  not 
  dilated 
  near 
  apex 
  3 
  

  

  2. 
  Median 
  lobe 
  only 
  slightly 
  dilated, 
  only 
  slightly 
  excavated 
  above, 
  and 
  with 
  

  

  a 
  carina 
  from 
  the 
  median 
  orifice 
  to 
  the 
  apex; 
  apex 
  rounded 
  or 
  truncate. 
  

  

  coarctatus 
  Champion 
  

  

  Median 
  lobe 
  broadly 
  dilated, 
  spoon-shaped, 
  deeply 
  excavated 
  above; 
  dorsal 
  

  

  carina 
  lacking; 
  a[)ex 
  produced 
  anrl 
  slightly 
  emarginate 
  ovalis 
  Pierce 
  

  

  3. 
  Profile 
  (lateral) 
  of 
  apical 
  half 
  of 
  median 
  lobe 
  thin, 
  nearly 
  straij^ht. 
  slightly 
  

  

  recurved 
  at 
  apex 
  ; 
  median 
  orifice 
  oval 
  cinerascens 
  Pierce 
  

  

  Profile 
  of 
  median 
  lobe 
  thicker, 
  evenly 
  curved 
  to 
  apex, 
  not 
  recurved; 
  median 
  

   orifice 
  somewhat 
  pointerl 
  apically, 
  more 
  tnmcate 
  basally. 
  

  

  globularis 
  Pierce 
  

  

  TOSA.STF.S 
  COARCTATUS 
  Chninplon 
  

   FirjORB 
  73 
  

   Toaasleg 
  coardalua 
  Ciiampio.n, 
  HU 
  1, 
  p. 
  319. 
  

  

  JMack, 
  densely 
  clotliod 
  with 
  iiDhricato 
  white 
  scnies. 
  Kostrimi 
  

   stout, 
  separated 
  from 
  the 
  front 
  by 
  a 
  transverse 
  impression, 
  and 
  

   prcatly 
  nrcjjed 
  dorsally 
  near 
  the 
  apex 
  ; 
  median 
  sulcus 
  distinct, 
  finely 
  

   impresseil, 
  hroadeninp 
  at 
  each 
  end, 
  (erniinntinjc 
  aliruptly 
  at 
  the 
  

   transverse 
  impression; 
  lateral 
  sulci 
  short, 
  hroad, 
  tcndin<,' 
  to 
  conveif^o 
  

   at 
  base 
  of 
  rostrum; 
  intcrsuleul 
  ridges 
  prondnent; 
  scar 
  of 
  deciduous 
  

   cusps 
  of 
  mandibles 
  almost 
  as 
  prominent 
  as 
  in 
  7'. 
  r'lnerasctns 
  I'ierre. 
  

  

  