﻿ON 
  SOME 
  SPECIES 
  OF 
  CACODMUS, 
  A 
  GENUS 
  OF 
  BEDBUGS 
  

  

  (CLINOCORIDAE). 
  

  

  By 
  The 
  Hon. 
  N. 
  C. 
  Rothschild. 
  

  

  In 
  the 
  Entomologists' 
  Monthly 
  Magazine, 
  (2) 
  xxiii, 
  p. 
  85 
  (1912), 
  I 
  described 
  as 
  

   Cacodmus 
  ignotus, 
  sp. 
  nov., 
  a 
  female 
  without 
  locality 
  and 
  compared 
  it 
  with 
  Cacodmus 
  

   villosus, 
  Stal. 
  The 
  Imperial 
  Bureau 
  of 
  Entomology 
  has 
  lately 
  received 
  from 
  Uganda 
  

   a 
  pair 
  of 
  a 
  Cacodmus, 
  taken 
  from 
  a 
  bat 
  by 
  Mr. 
  C. 
  C. 
  Gowdey, 
  which 
  differs 
  so 
  little 
  

   from 
  the 
  specimen 
  described 
  as 
  ignotus, 
  that 
  I 
  consider 
  the 
  two 
  examples 
  to 
  belong 
  to 
  

   that 
  species. 
  

  

  C. 
  ignotus 
  is 
  larger 
  and 
  much 
  more 
  elongate 
  than 
  C. 
  villosus, 
  the 
  sides 
  of 
  the 
  pro- 
  

   notum 
  and 
  of 
  the 
  elytra 
  are 
  slightly 
  less 
  rounded 
  and 
  the 
  hind 
  tibia 
  is 
  somewhat 
  

   longer 
  than 
  the 
  femur. 
  The 
  differences 
  in 
  the 
  proportional 
  lengths 
  of 
  the 
  antennal 
  

   segments 
  appear 
  to 
  be 
  less 
  constant 
  and 
  therefore 
  of 
  less 
  importance 
  than 
  I 
  at 
  first 
  

   considered 
  them 
  to 
  be. 
  The 
  segments, 
  moreover, 
  are 
  very 
  difficult 
  to 
  measure, 
  as 
  

   a 
  slight 
  deviation 
  of 
  a 
  segment 
  from 
  a 
  horizontal 
  position 
  renders 
  the 
  measurement 
  

   incorrect. 
  

  

  The 
  most 
  conspicuous 
  difference 
  between 
  ignotus 
  and 
  villosus 
  is 
  the 
  organ 
  of 
  copu- 
  

   lation 
  of 
  the 
  male. 
  In 
  villosus 
  (fig. 
  4) 
  this 
  organ 
  reaches 
  somewhat 
  beyond 
  the 
  centre 
  

   of 
  the 
  sixth 
  abdominal 
  segment, 
  and 
  the 
  groove 
  in 
  which 
  it 
  rests 
  extends 
  to 
  the 
  base 
  

   of 
  the 
  sixth 
  segment, 
  being 
  covered 
  by 
  the 
  apex 
  of 
  the 
  fifth 
  segment. 
  In 
  C. 
  ignotus 
  

   (fig. 
  5) 
  the 
  penis 
  groove 
  only 
  extends 
  to 
  the 
  base 
  of 
  the 
  seventh 
  segment, 
  and 
  the 
  

   penis 
  itself 
  reaches 
  just 
  a 
  little 
  beyond 
  the 
  centre 
  of 
  that 
  segment. 
  The 
  penis 
  of 
  

   C. 
  ignotus, 
  moreover, 
  is 
  half 
  as 
  thick 
  again 
  near 
  the 
  base 
  as 
  in 
  C. 
  villosus. 
  

  

  The 
  male 
  recorded 
  by 
  me 
  in 
  Ent. 
  Mo. 
  Mag. 
  xxiii 
  p. 
  86, 
  as,a 
  doubtful 
  C. 
  villosus, 
  

   and 
  contained 
  in 
  the 
  Cambridge 
  Museum, 
  belongs 
  to 
  C. 
  ignotus. 
  

  

  acodmus 
  sparsilis, 
  sp. 
  nov. 
  (fig. 
  3). 
  

  

  Cacodmus 
  villosus, 
  Roths., 
  Ent. 
  Mo. 
  Mag. 
  (2) 
  xxiii, 
  p. 
  86 
  (1912) 
  and 
  xxiv, 
  p. 
  102 
  

   (1913) 
  (partim). 
  

  

  A 
  female 
  in 
  the 
  collection 
  of 
  the 
  British 
  Museum 
  which 
  I 
  have 
  hitherto 
  considered 
  

   to 
  be 
  a 
  female 
  of 
  C. 
  villosus 
  exhibits 
  some 
  very 
  trenchant 
  differences 
  from 
  true 
  villosus 
  

   now 
  that 
  it 
  is 
  mounted 
  in 
  balsam, 
  and 
  doubtless 
  represents 
  a 
  new 
  species. 
  

  

  The 
  specimen 
  is 
  rather 
  smaller 
  but 
  more 
  elongate 
  than 
  C. 
  villosus, 
  and 
  the 
  bristles 
  

   of 
  the 
  body 
  are 
  less 
  numerous 
  as 
  well 
  as 
  somewhat 
  shorter 
  than 
  in 
  that 
  species. 
  The 
  

   sides 
  of 
  the 
  pronotum 
  are 
  less 
  rounded 
  (fig. 
  3) 
  and 
  the 
  anterior 
  angle 
  more 
  produced. 
  

   The 
  curved 
  incrassation 
  within 
  the 
  prothorax, 
  placed 
  in 
  front 
  of 
  the 
  coxal 
  groove, 
  

   is 
  farther 
  away 
  from 
  the 
  apical 
  angle 
  of 
  the 
  prothorax 
  than 
  is 
  the 
  case 
  in 
  C. 
  villosus 
  

   and 
  ignotus 
  (cf. 
  figs 
  1, 
  2 
  and 
  3). 
  The 
  elytra 
  are 
  very 
  strongly 
  rounded 
  laterally, 
  there 
  

   being 
  no 
  indication 
  of 
  a 
  lateral 
  angle 
  (fig. 
  3), 
  while 
  the 
  lateral 
  ridge 
  present 
  on 
  the 
  

   under 
  surface 
  is 
  hardly 
  at 
  all 
  widened 
  anteriorly. 
  The 
  two 
  irregular 
  rows 
  of 
  bristles 
  

   of 
  the 
  pronotum 
  which 
  are 
  nearest 
  the 
  apical 
  edge 
  contain 
  about 
  30 
  bristles 
  altogether, 
  

   while 
  the 
  number 
  is 
  more 
  than 
  50 
  in 
  villosus. 
  The 
  corresponding 
  two 
  rows 
  of 
  bristles 
  

   along 
  the 
  basal 
  edge 
  of 
  the 
  elytra 
  from 
  the 
  central 
  projection 
  of 
  the 
  scutellum 
  to 
  the 
  

   point 
  where 
  the 
  margin 
  curves 
  forward, 
  contain 
  in 
  sparsilis 
  about 
  18 
  bristles, 
  and 
  

   in 
  villosus 
  about 
  30. 
  The 
  hind 
  tibia 
  is 
  slightly 
  longer 
  than 
  the 
  hind 
  femur. 
  

  

  One 
  female 
  in 
  the 
  British 
  Museum 
  from 
  Port 
  Natal, 
  off 
  Vespertilio 
  dinyani. 
  

  

  