﻿SOME 
  INJURIOUS 
  NEOTROPICAL 
  WEEVILS. 
  69 
  

  

  The 
  species 
  referable 
  to 
  the 
  subgenus 
  Pseudopiazurus 
  may 
  be 
  distinguished 
  by 
  

   the 
  following 
  characters 
  : 
  — 
  

  

  1 
  (6). 
  Hind 
  tibiae 
  with 
  a 
  sharp 
  tooth 
  on 
  the 
  inner 
  edge 
  above 
  the 
  apex. 
  

  

  2 
  (3). 
  Second 
  visible 
  ventrite 
  with 
  a 
  sharp 
  elevated 
  tubercle 
  in 
  the 
  middle 
  of 
  

  

  the 
  basal 
  margin 
  projecting 
  obliquely 
  forwards 
  . 
  . 
  

  

  spiniventris, 
  sp. 
  n.* 
  

  

  3 
  (2). 
  Second 
  visible 
  ventrite 
  normal. 
  

  

  4 
  (5). 
  Elytra 
  with 
  a 
  conspicuous 
  prominence 
  on 
  interval 
  three 
  near 
  the 
  base, 
  

  

  and 
  intervals 
  two 
  and 
  three 
  costate 
  for 
  a 
  short 
  distance 
  behind 
  the 
  

   middle 
  ; 
  pronotum 
  with 
  a 
  sharp 
  elevation 
  before 
  the 
  middle, 
  the 
  

   basal 
  half 
  without 
  large 
  punctures 
  . 
  .defector, 
  Boh. 
  

  

  5 
  (4). 
  Elytra 
  with 
  all 
  the 
  intervals 
  of 
  even 
  height 
  ; 
  pronotum 
  without 
  any 
  

  

  elevation 
  and 
  with 
  a 
  number 
  of 
  large 
  punctures 
  in 
  the 
  basal 
  half 
  

  

  centraliamericanus, 
  Heller. 
  

  

  6 
  (1). 
  Hind 
  tibiae 
  sharply 
  angulate 
  internally 
  at 
  the 
  apex, 
  but 
  with 
  no 
  tooth 
  

  

  above 
  the 
  apex. 
  

  

  7 
  (8). 
  Elytra 
  with 
  very 
  numerous, 
  closely 
  placed, 
  transverse 
  granules 
  on 
  the 
  

  

  intervals 
  papayanus 
  , 
  sp 
  . 
  n 
  . 
  

  

  8 
  (7). 
  Elytra 
  with 
  fewer, 
  more 
  widely 
  spaced 
  and 
  almost 
  rounded 
  granules 
  

  

  obesus, 
  Boh. 
  

  

  Lechriops 
  psidii, 
  sp. 
  nov. 
  

  

  <J 
  $. 
  Integument 
  red-brown 
  ; 
  the 
  head 
  with 
  a 
  dense 
  edging 
  of 
  pale 
  buff 
  scales 
  

   between 
  and 
  behind 
  the 
  eyes 
  ; 
  the 
  prothorax 
  clothed 
  with 
  rather 
  sparse 
  narrow 
  

   brownish-yellow 
  scales, 
  mostly 
  transverse 
  in 
  position 
  and 
  leaving 
  much 
  of 
  the 
  integu- 
  

   ment 
  exposed, 
  a 
  few 
  blackish 
  ones 
  on 
  the 
  lateral 
  slopes 
  of 
  the 
  median 
  elevation, 
  a 
  

   median 
  stripe 
  of 
  dense 
  broad 
  white 
  scales 
  in 
  the 
  posterior 
  half, 
  a 
  few 
  broad 
  yellowish- 
  

   white 
  scales 
  in 
  the 
  middle 
  of 
  the 
  front 
  margin 
  and 
  a 
  few 
  on 
  ea< 
  h 
  side 
  near 
  that 
  margin 
  ; 
  

   the 
  elytra 
  fairly 
  densely 
  covered 
  with 
  mingled 
  pale 
  bull 
  and 
  whitish 
  scales, 
  and 
  with 
  

   an 
  ill-defined 
  curved 
  dark 
  transverse 
  band 
  about 
  the 
  middle 
  between 
  striae 
  1 
  and 
  8, 
  

   which 
  is 
  deepest 
  on 
  interval 
  three 
  and 
  rapidly 
  narrows 
  outwards 
  to 
  a 
  point 
  on 
  

   interval 
  eight; 
  a 
  few 
  blackish 
  scales 
  on 
  the 
  basal 
  half 
  of 
  intervals 
  three 
  and 
  five, 
  

   and 
  a 
  few 
  more 
  behind 
  the 
  middle 
  on 
  two. 
  four, 
  five, 
  six 
  and 
  eight 
  ; 
  the 
  mesosternum, 
  

   metasternum 
  and 
  abdomen 
  uniformly 
  covered 
  with 
  large 
  subcontiguous 
  white 
  scales. 
  

  

  Head 
  with 
  the 
  interocular 
  space 
  a 
  little 
  broader 
  than 
  the 
  widest 
  part 
  of 
  the 
  scape. 
  

   Rostrum 
  gradually 
  narrowed 
  from 
  the 
  base 
  to 
  the 
  antennae, 
  which 
  are 
  inserted 
  a 
  

   little 
  behind 
  the 
  middle 
  in 
  both 
  sexes, 
  thence 
  parallel-sided 
  and 
  somewhat 
  dilated 
  

   again 
  at 
  the 
  apex 
  ; 
  the 
  basal 
  area 
  very 
  convex 
  transversely, 
  opaque, 
  shallowly 
  

   punctate, 
  thinly 
  squamose, 
  and 
  with 
  a 
  smooth 
  median 
  carina 
  in 
  both 
  sexes 
  ; 
  the 
  

   apical 
  area 
  with 
  strong 
  separated 
  punctures 
  in 
  the 
  ,£, 
  with 
  a 
  shinv 
  median 
  line 
  and 
  

   somewhat 
  opaque 
  at 
  the 
  sides; 
  in 
  the 
  , 
  , 
  shiny 
  throughout 
  and 
  with 
  much 
  finer 
  

  

  * 
  Piazurus 
  spiniventris, 
  si 
  » 
  n. 
  -<?$• 
  The 
  description 
  of 
  P. 
  papayanus 
  applies 
  to 
  this 
  specii 
  

   except 
  in 
  the 
  following 
  particulars 
  : 
  — 
  Prothorax 
  with 
  the 
  prominence 
  very 
  much 
  lower 
  and 
  with 
  

   a 
  number 
  of 
  coarse 
  puni 
  tures 
  on 
  bhe 
  basal 
  half 
  of 
  the 
  disk 
  ; 
  the 
  supracoxal 
  carina 
  obsolescenl 
  

   Scutellum 
  with 
  the 
  setiform 
  scales 
  as 
  long 
  as 
  those 
  on 
  the 
  elytra. 
  Elytra 
  without 
  the 
  patches 
  

   of 
  black 
  scaling 
  ; 
  the 
  scales 
  distinctly 
  longer, 
  especially 
  along 
  the 
  suture 
  ; 
  the 
  punctures 
  n 
  

   larger, 
  oblong, 
  and 
  not 
  diminishing 
  behind 
  until 
  quite 
  close 
  to 
  the 
  apex 
  ; 
  tin- 
  intervals 
  not 
  broader 
  

   than 
  the 
  striae, 
  with 
  much 
  larger, 
  less 
  numerous, 
  but 
  closely 
  set 
  and 
  somewhal 
  ilattcncd 
  granules, 
  

   and 
  with 
  no 
  transverse 
  elevation 
  near 
  the 
  base. 
  Legs 
  : 
  the 
  hind 
  tibiae 
  .oni.d 
  with 
  a 
  very 
  long 
  

   oblique 
  sharp 
  spine 
  a1 
  one-fourth 
  from 
  the 
  apex 
  on 
  the 
  inner 
  edge. 
  Venter 
  with 
  the 
  arch-shap 
  d 
  

   impression 
  on 
  the 
  first 
  visible 
  ventrite 
  mueh 
  broader 
  and 
  deeper 
  ; 
  the 
  next 
  ventrite 
  with 
  a 
  shai 
  p 
  

   obliquely 
  prominent 
  tubercle 
  in 
  the 
  middle 
  of 
  its 
  base 
  in 
  both 
  sexes; 
  the 
  last 
  visible 
  ventrite 
  

   wiih 
  its 
  apical 
  margin 
  very 
  broadly 
  and 
  deeply 
  sinuate 
  in 
  y 
  and 
  shallowly 
  bisinuate 
  in 
  $. 
  

   Length, 
  10-5-11 
  mm.; 
  breadth, 
  5'5-5-75 
  mm. 
  Brazil: 
  Ega, 
  R. 
  Amazon 
  (II. 
  If. 
  Bates). 
  

   Described 
  from 
  three 
  spei 
  im< 
  as. 
  

  

  