﻿South 
  American 
  species 
  of 
  Diabrotica. 
  469 
  

  

  143. 
  Diabrotica 
  tuberculata, 
  Baly. 
  

   P. 
  Z.S., 
  1889, 
  p,91. 
  

  

  Sat 
  late 
  ovata, 
  postice 
  paullo 
  ampliata, 
  convexa, 
  subtus 
  scutello 
  

   capiteque 
  nigris, 
  antennarum 
  articulis 
  ultimis 
  quatuor 
  sordicle 
  

   fulvis 
  ; 
  thorace 
  elytrisque 
  flavis 
  illo 
  arcuatim 
  excavato, 
  utrinque 
  

   puncto 
  nigro 
  parvo 
  notato, 
  his 
  tenuiter 
  punctatis, 
  utrisque 
  plagis 
  

   magnis 
  duabiis, 
  uno 
  baseos, 
  altera 
  pone 
  medium 
  nigris. 
  

  

  Mas. 
  Elytris 
  utrisqiie 
  prope 
  suturam 
  ante 
  apicem 
  tuberculo 
  

   valido 
  conico 
  arcuatis. 
  

  

  Long. 
  6^ 
  mm. 
  

  

  Hab. 
  Eastern 
  Ecuador 
  {Buckley). 
  

  

  Head 
  very 
  slightly 
  longer 
  than 
  broad, 
  triangular 
  ; 
  clypeus 
  with 
  

   a 
  strongly 
  raised 
  longitiidinal 
  ridge 
  ; 
  antennae 
  slightly 
  equal 
  to 
  the 
  

   body 
  in 
  length, 
  filiform, 
  very 
  slightly 
  attenuated 
  towards 
  the 
  apex 
  ; 
  

   the 
  second 
  joint 
  short, 
  obovate, 
  the 
  third 
  twice 
  its 
  length, 
  slightly 
  

   longer 
  than 
  the 
  fourth 
  ; 
  black, 
  the 
  upper 
  four 
  joints 
  piceo-fulvous. 
  

   Thorax 
  about 
  one-third 
  broader 
  than 
  long 
  ; 
  sides 
  -rather 
  broadly 
  

   margined, 
  straight 
  and 
  very 
  slightly 
  diverging 
  from 
  the 
  base 
  to 
  

   beyond 
  the 
  middle, 
  thence 
  obliquely 
  rounded 
  and 
  converging 
  

   towards 
  the 
  apex 
  : 
  above 
  convex, 
  obliquely 
  detlexed 
  on 
  the 
  sides, 
  

   hinder 
  disk 
  with 
  a 
  broad 
  curved 
  excavation, 
  which 
  is 
  more 
  deeply 
  

   impressed 
  on 
  either 
  side 
  ; 
  just 
  before 
  the 
  middle 
  are 
  two 
  small 
  

   round 
  black 
  spots. 
  Elytra 
  oblong-ovate, 
  slightly 
  dilated 
  posteriorly, 
  

   their 
  apices 
  rounded, 
  conjointly 
  sinuate 
  at 
  the 
  sutural 
  angle, 
  con- 
  

   vex, 
  slightly 
  excavated 
  on 
  the 
  suture, 
  below 
  the 
  basilar 
  space 
  finely 
  

   but 
  distinctly 
  punctured 
  ; 
  each 
  elytron 
  in 
  the 
  J^ 
  (the 
  only 
  sex 
  

   known 
  to 
  me) 
  with 
  a 
  large 
  conical 
  obtuse 
  tubercle, 
  placed 
  close 
  to 
  

   the 
  siiture 
  just 
  before 
  the 
  apex. 
  [Baly.] 
  

  

  144. 
  Diabrotica 
  propinqua, 
  Baly. 
  

   Joui'n. 
  Linn. 
  Soc, 
  xix., 
  p. 
  255. 
  

  

  Hab. 
  Colombia. 
  

  

  145. 
  Diabrotica 
  robusta, 
  Baly. 
  

   Joiirn. 
  Linn. 
  Soc, 
  xix., 
  p. 
  255. 
  

   Hab. 
  Colombia. 
  

  

  146. 
  Diabrotica 
  ivibuta, 
  Erichs. 
  

   Wieg. 
  Archiv., 
  1847, 
  i., 
  p. 
  168. 
  

   Hab. 
  Peru. 
  

  

  