﻿34 
  A. 
  K. 
  MORDVILKO. 
  

  

  Subfamily 
  Lachninae. 
  

   Tribe 
  ANOECIEA. 
  

   In 
  this 
  tribe 
  there 
  is 
  as 
  yet 
  only 
  one 
  genus, 
  Anoecia, 
  Koch. 
  

  

  1 
  (4). 
  In 
  apterous 
  viviparous 
  females 
  from 
  roots, 
  6th 
  joint 
  of 
  antennae 
  \\ 
  times 
  

  

  as 
  long 
  as 
  5th, 
  the 
  spur 
  being 
  equal 
  to 
  more 
  than 
  one-third 
  or 
  almost 
  

   one-third 
  of 
  base. 
  

  

  2 
  (3). 
  Third 
  joint 
  2§-2§ 
  times 
  as 
  long 
  as 
  4th 
  ; 
  eyes 
  with 
  numerous 
  facets 
  ; 
  

  

  apterous 
  viviparous 
  9$ 
  greenish 
  or 
  greenish-yellowish-white, 
  older 
  

   ones 
  with 
  a 
  large 
  dark 
  spot 
  on 
  abdominal 
  segments 
  2-6 
  ; 
  in 
  alate 
  

   viviparous 
  $$ 
  abdomen 
  on 
  the 
  upper 
  side 
  ashen-white 
  with 
  a 
  dark 
  

   spot. 
  On 
  roots 
  of 
  Graminaceae 
  live 
  only 
  migrantes 
  (viviparous 
  $$>), 
  

   but 
  primary 
  host-plants 
  are 
  certain 
  species 
  of 
  Cornns 
  (C. 
  sanguinea, 
  

   alba, 
  sibirica 
  and 
  others, 
  but 
  not 
  C. 
  mas) 
  . 
  . 
  . 
  . 
  A. 
  corni, 
  Fabr. 
  

  

  3 
  (2). 
  Third 
  joint 
  of 
  antennae 
  more 
  than 
  three 
  times 
  as 
  long 
  as 
  4th 
  ; 
  apterous 
  

  

  individuals 
  pale 
  green, 
  more 
  seldom 
  olive 
  ; 
  in 
  alatae 
  abdomen 
  pale 
  

   green 
  with 
  a 
  dark 
  brown 
  spot 
  in 
  centre. 
  On 
  roots 
  of 
  wheat 
  ; 
  Egypt 
  : 
  

   Gizeh 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  A 
  . 
  willcocksi, 
  Theo. 
  

  

  4 
  (1). 
  In 
  apterous 
  viviparous 
  99 
  from 
  roots, 
  6th 
  joint 
  of 
  antennae 
  not 
  longer 
  

  

  than 
  5th, 
  the 
  spur 
  being 
  equal 
  to 
  about 
  one-fifth 
  of 
  base 
  ; 
  3rd 
  joint 
  

   of 
  antennae 
  3-3£ 
  times 
  as 
  long 
  as 
  4th 
  ; 
  whitish 
  or 
  greyish 
  green. 
  On 
  

   roots 
  of 
  Graminaceae 
  (and 
  sedges 
  ?) 
  viviparous 
  $2 
  and 
  apterous 
  sexuales, 
  

   the 
  normal 
  females 
  hardly 
  differing 
  in 
  size 
  from 
  the 
  viviparous, 
  but 
  

   having 
  on 
  the 
  sides 
  of 
  6th 
  and 
  7th 
  abdominal 
  segments 
  (both 
  ventrally 
  

   and 
  dorsally) 
  large 
  groups 
  of 
  glands, 
  secreting 
  short 
  down. 
  Pskov 
  

   province 
  .. 
  .. 
  .. 
  .. 
  .. 
  .. 
  A. 
  pskovica, 
  sp. 
  n. 
  

  

  Subfamily 
  Pemphiginae. 
  

   Tribe 
  Fordea. 
  

  

  1 
  (4). 
  Rostrum 
  very 
  long, 
  almost 
  as 
  long 
  as 
  body 
  or 
  rather 
  shorter, 
  its 
  last 
  

  

  joint 
  in 
  form 
  of 
  a 
  long 
  spur, 
  which 
  is 
  considerably 
  longer 
  than 
  2nd 
  joint, 
  

   and 
  2i-3J 
  times 
  as 
  long 
  as 
  3rd 
  joint 
  ; 
  antennae 
  long 
  ; 
  5th 
  joint 
  longer 
  

   than 
  3rd 
  ; 
  hairs 
  on 
  body 
  of 
  two 
  kinds, 
  thick 
  and 
  thin 
  ; 
  anal 
  tergite 
  

   not 
  entirely 
  covering 
  anus, 
  which 
  appears 
  as 
  a 
  tranverse 
  slit, 
  occupying 
  

   a 
  dorsal 
  position 
  ; 
  apterous 
  individuals 
  white 
  or 
  whitish 
  ; 
  alatae 
  not 
  

   known. 
  On 
  plant 
  roots 
  in 
  ant 
  and 
  termite 
  nests 
  

  

  Subtribe 
  Rectinasina. 
  

  

  Here 
  belongs 
  one 
  genus 
  Rectinasus, 
  Theo. 
  

  

  2 
  (3). 
  Fourth 
  joint 
  of 
  antennae 
  1|— 
  If 
  times 
  as 
  long 
  as 
  2nd 
  ; 
  2nd 
  somewhat 
  

  

  longer 
  than 
  1st. 
  In 
  termite 
  nests 
  ; 
  Algiers 
  . 
  . 
  R. 
  buxtoni, 
  Theo. 
  

  

  3 
  (2). 
  Fourth 
  joint 
  of 
  antennae 
  only 
  li-lj 
  times 
  as 
  long 
  as 
  2nd, 
  which 
  is 
  sub- 
  

  

  equal 
  to 
  the 
  1st. 
  In 
  ant 
  nests, 
  under 
  stones 
  ; 
  Elisavetpol 
  province, 
  

   Boz-Dag 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  R. 
  caucasicus, 
  sp. 
  n. 
  

  

  4 
  (1 
  ). 
  Rostrum 
  hardly 
  extending 
  further 
  than 
  the 
  base 
  or 
  the 
  middle 
  of 
  abdomen, 
  

  

  its 
  last 
  joint 
  being 
  considerably 
  shorter 
  than 
  2nd 
  and 
  not 
  much 
  different 
  

   in 
  length 
  from 
  the 
  penultimate 
  ; 
  on 
  body 
  hairs 
  only 
  of 
  one 
  kind, 
  thin, 
  

   sometimes 
  squamose 
  ; 
  3rd 
  joint 
  of 
  antennae 
  the 
  longest 
  ; 
  anal 
  tergite 
  

   covering 
  anus 
  from 
  above 
  . 
  . 
  . 
  . 
  . 
  . 
  Subtribe 
  Ford 
  in 
  a. 
  

  

  5 
  -(30). 
  Hairs 
  on 
  body 
  and 
  legs 
  of 
  usual 
  type, 
  bristly. 
  

  

  