﻿59 
  

  

  SOME 
  INJURIOUS 
  NEOTROPICAL 
  WEEVILS 
  (CURCULIONIDAE). 
  

  

  By 
  Guy 
  A. 
  K. 
  Marshall, 
  C.M.G., 
  D.Sc. 
  

  

  (Plates 
  I 
  & 
  II.) 
  

  

  Subfamily 
  Otiorrhynchinae. 
  

  

  Genus 
  Apodrosus, 
  nov. 
  

  

  The 
  species 
  for 
  which 
  this 
  genus 
  is 
  proposed 
  is 
  closely 
  allied 
  to 
  Polydrusus, 
  Germ., 
  

   and 
  agrees 
  with 
  it 
  in 
  all 
  its 
  more 
  salient 
  characteristics 
  ; 
  but 
  it 
  differs 
  from 
  all 
  the 
  

   species 
  of 
  that 
  genus 
  known 
  to 
  me 
  in 
  the 
  following 
  points 
  : 
  — 
  The 
  head 
  bears 
  a 
  long, 
  

   deep 
  median 
  furrow 
  ; 
  the 
  epistome 
  forms 
  a 
  large 
  bare 
  smooth 
  triangular 
  area, 
  which 
  

   is 
  well 
  defined 
  and 
  in 
  no 
  way 
  impressed, 
  but 
  even 
  slightly 
  convex 
  ; 
  the 
  elytra 
  have 
  

   a 
  prominent 
  posterior 
  callus, 
  and 
  the 
  ninth 
  and 
  tenth 
  striae 
  coalesce 
  in 
  the 
  middle 
  

   for 
  one-third 
  of 
  their 
  length. 
  

  

  Genotype, 
  Apodrosus 
  ivolcotti, 
  sp. 
  n. 
  

  

  Apodrosus 
  wolcotti, 
  sp. 
  n. 
  (Plate 
  i, 
  fig. 
  7). 
  

  

  <J 
  $. 
  Integument 
  black 
  or 
  dark 
  piceous, 
  fairly 
  closely 
  covered 
  above 
  with 
  small, 
  

   near 
  circular, 
  pinkish 
  buff 
  scales 
  having 
  a 
  distinct 
  coppery 
  sheen 
  ; 
  the 
  elytra 
  some- 
  

   times 
  with 
  an 
  indefinite 
  narrow 
  band 
  of 
  dark 
  brown 
  scales 
  behind 
  the 
  middle 
  between 
  

   striae 
  3 
  and 
  6 
  ; 
  the 
  lower 
  surface 
  with 
  coppery 
  grey 
  scaling 
  along 
  the 
  sides 
  

   of 
  the 
  sternum 
  and 
  venter, 
  the 
  median 
  area 
  with 
  sparse 
  short 
  curved 
  pale 
  squami- 
  

   form 
  setae. 
  

  

  Head 
  very 
  finely 
  and 
  obliquely 
  aciculate 
  ; 
  the 
  forehead 
  quite 
  flat, 
  its 
  least 
  breadth 
  

   about 
  equal 
  to 
  the 
  length 
  of 
  an 
  eye, 
  and 
  with 
  a 
  deep 
  median 
  furrow 
  extending 
  back- 
  

   wards 
  to 
  the 
  level 
  of 
  the 
  hind 
  margins 
  of 
  the 
  eyes 
  ; 
  the 
  eyes 
  elongate, 
  longitudinal, 
  

   prominent, 
  coarsely 
  facetted 
  and 
  with 
  their 
  greatest 
  depth 
  behind 
  the 
  middle. 
  Rostrum 
  

   comparatively 
  long, 
  a 
  little 
  longer 
  than 
  the 
  head 
  and 
  much 
  longer 
  than 
  its 
  own 
  basal 
  

   width, 
  and 
  strongly 
  dilated 
  in 
  the 
  apical 
  half 
  ; 
  the 
  dorsum 
  very 
  convex 
  transversely, 
  

   finely 
  rugulose, 
  with 
  a 
  broad 
  median 
  furrow 
  in 
  the 
  basal 
  half 
  ; 
  the 
  epistome 
  com- 
  

   parative 
  large, 
  not 
  at 
  all 
  impressed, 
  but 
  slightly 
  convex, 
  and 
  shallowly 
  punctate 
  ; 
  the 
  

   scrobes 
  very 
  deep, 
  narrow 
  and 
  remote 
  from 
  the 
  eyes. 
  Antennae 
  testaceous 
  brown, 
  

   long 
  and 
  slender, 
  the 
  distal 
  joints 
  of 
  the 
  funicle 
  much 
  longer 
  than 
  broad. 
  Prothorax 
  

   transverse, 
  subparallel-sided 
  or 
  very 
  slightly 
  widening 
  from 
  the 
  base 
  to 
  beyond 
  the 
  

   middle, 
  and 
  then 
  rapidly 
  narrowing 
  to 
  the 
  apex 
  ; 
  the 
  dorsum 
  with 
  coarse 
  subcon- 
  

   fluent 
  shallow 
  punctures, 
  which 
  are 
  partly 
  concealed 
  by 
  the 
  scaling, 
  and 
  with 
  a 
  broad 
  

   shallow 
  transverse 
  depression 
  near 
  the 
  apex 
  ; 
  the 
  scaling 
  not 
  so 
  dense 
  as 
  to 
  conceal 
  

   the 
  integument 
  entirely, 
  and 
  interspersed 
  with 
  recumbent 
  spatulate 
  setae 
  ; 
  the 
  

   presternum 
  longer 
  than 
  usual 
  in 
  front 
  of 
  the 
  coxae. 
  ScuteUum 
  with 
  sparse 
  minute 
  

   setae. 
  Elytra 
  broadly 
  ovate 
  in 
  $, 
  much 
  narrower 
  in 
  $, 
  much 
  wider 
  at 
  the 
  shoulders 
  

   than 
  the 
  prothorax, 
  with 
  a 
  prominent 
  posterior 
  callus 
  at 
  the 
  apex 
  of 
  interval 
  five 
  ; 
  

   the 
  striae 
  containing 
  large 
  shallow 
  punctures, 
  the 
  intervals 
  (when 
  not 
  abraded) 
  much 
  

   broader 
  than 
  the 
  striae 
  and 
  plane 
  or 
  slightly 
  convex, 
  each 
  bearing 
  a 
  row 
  of 
  short 
  

   curved 
  spatulate 
  setae. 
  Wings 
  fully 
  developed. 
  Legs 
  piceous, 
  with 
  rather 
  sparse 
  

   scales 
  and 
  spatulate 
  setae 
  ; 
  the 
  femora 
  unarmed. 
  

  

  Length, 
  3-5-5 
  mm. 
  ; 
  breadth, 
  1-6-2-4 
  mm. 
  

  

  Porto 
  Rico 
  : 
  Rio 
  Piedras, 
  iv. 
  1921 
  (G. 
  N. 
  Wolcott). 
  

  

  Described 
  from 
  ten 
  specimens. 
  

  

  Diaprepes 
  capsicalis, 
  sp. 
  nov. 
  

  

  <J 
  $. 
  Integument 
  black 
  or 
  piceous, 
  fairly 
  densely 
  clothed 
  above 
  and 
  below 
  with 
  

   brown 
  or 
  brownish 
  grey 
  scaling, 
  often 
  with 
  a 
  coppery 
  reflexion 
  ; 
  the 
  elytra 
  with 
  a 
  

   pale 
  dot 
  about 
  the 
  middle 
  of 
  interval 
  five. 
  

  

  