﻿32 
  A. 
  K. 
  MORDYILKO. 
  

  

  9 
  (18). 
  Last 
  joint 
  of 
  rostrum 
  not 
  more 
  than 
  H 
  times 
  as 
  long 
  as 
  penultimate 
  

  

  joint. 
  

  

  10 
  (13). 
  Hairs 
  on 
  body 
  short, 
  mostly 
  thick 
  ; 
  hairs 
  on 
  front 
  of 
  head 
  at 
  sides 
  from 
  

  

  0-06 
  to 
  0-08 
  mm., 
  about 
  two-sevenths 
  to 
  one-fifth 
  of 
  width 
  of 
  head 
  

   immediately 
  in 
  front 
  of 
  the 
  eyes. 
  

  

  11 
  (12). 
  Second 
  joint 
  of 
  antennae 
  in 
  apterous 
  females 
  equal 
  to 
  one-sixth 
  to 
  one- 
  

  

  fifth 
  of 
  length 
  of 
  3rd 
  joint 
  ; 
  4th 
  joint 
  almost 
  equal 
  to 
  base 
  of 
  5th 
  ; 
  

   body 
  dark 
  brown, 
  shining 
  . 
  . 
  

  

  S. 
  maidis, 
  Pass. 
  (= 
  elegans, 
  Guerc. 
  ; 
  maidis 
  avenae, 
  Guerc. 
  ; 
  

  

  ? 
  graminis, 
  Kalt.). 
  

  

  12 
  (11). 
  Second 
  joint 
  of 
  antennae 
  in 
  apterous 
  females 
  equal 
  to 
  two-ninths 
  to 
  

  

  two-sevenths 
  of 
  length 
  of 
  3rd 
  joint 
  ; 
  4th 
  joint 
  somewhat 
  shorter 
  

   than 
  base 
  of 
  5th, 
  equal 
  to 
  three-quarters 
  to 
  five-sevenths 
  of 
  its 
  length 
  ; 
  

   spur 
  of 
  5th 
  joint 
  1J-1J 
  times 
  as 
  long 
  as 
  base 
  of 
  that 
  joint 
  ; 
  antennae 
  

   one- 
  third 
  to 
  one-half 
  length 
  of 
  body; 
  body 
  green 
  and 
  dark 
  green. 
  

   Stavropol 
  province 
  ; 
  on 
  Panicum 
  miliaceum 
  . 
  . 
  . 
  . 
  S. 
  nvarovi, 
  sp. 
  n 
  

  

  13 
  (10). 
  Hairs 
  thin, 
  fairly 
  long 
  ; 
  those 
  on 
  front 
  of 
  head 
  0-11 
  to 
  0-12 
  mm. 
  long, 
  

  

  equal 
  to 
  about 
  two-fifths 
  to 
  three-sevenths 
  of 
  width 
  of 
  head 
  immediately 
  

   in 
  front 
  of 
  compound 
  eyes. 
  

  

  14 
  (15). 
  Fourth 
  joint 
  of 
  antennae 
  in 
  apterous 
  viviparous 
  ?$ 
  equal 
  or 
  almost 
  equal 
  

  

  to 
  base 
  of 
  5th 
  ; 
  2nd 
  joint 
  of 
  antennae 
  one-quarter 
  to 
  one-third 
  the 
  

   length 
  of 
  3rd 
  ; 
  hairs 
  on 
  body 
  thick 
  ; 
  body 
  green 
  or 
  yellow 
  

  

  S. 
  kurdjumovi, 
  sp. 
  n. 
  

  

  15 
  (14). 
  Fourth 
  joint 
  of 
  antennae 
  in 
  apterous 
  viviparous 
  $5 
  lf-lj 
  times 
  as 
  long 
  

  

  as 
  base 
  of 
  5th 
  ; 
  3rd 
  joint 
  longer 
  than 
  the 
  whole 
  of 
  the 
  5th 
  ; 
  hairs 
  on 
  

   body 
  thin, 
  long. 
  

  

  16 
  (17). 
  Spur 
  of 
  5th 
  joint 
  less 
  than 
  twice 
  as 
  long 
  as 
  the 
  base 
  of 
  that 
  joint 
  ; 
  last 
  

  

  joint 
  of 
  rostrum 
  subequal 
  to 
  the 
  penultimate 
  ; 
  colour 
  of 
  apterous 
  

   viviparous 
  £$ 
  greenish 
  yellow, 
  yellowish 
  green, 
  brown 
  or 
  dark 
  yellow 
  

   with 
  a 
  distinct 
  pale 
  median 
  line 
  ; 
  fairly 
  large 
  Aphids, 
  2-2-39 
  mm. 
  in 
  

   length. 
  On 
  leaves 
  of 
  Elymus 
  arenarius 
  ; 
  Petrograd, 
  Orenburg 
  

  

  S. 
  arenarii, 
  sp. 
  n. 
  

  

  17 
  (16). 
  Spur 
  of 
  5th 
  joint 
  twice 
  or 
  nearly 
  twice 
  as 
  long 
  as 
  the 
  base 
  of 
  that 
  joint 
  ; 
  

  

  last 
  joint 
  of 
  rostrum 
  H 
  times 
  as 
  long 
  as 
  the 
  penultimate 
  ; 
  apterous 
  

   individuals 
  green, 
  without 
  a 
  pale 
  median 
  line; 
  small 
  Aphids 
  1-63- 
  

   0-75 
  mm. 
  On 
  J 
  Uncus 
  lamprocarpus 
  .. 
  S. 
  italica, 
  Guerc. 
  

  

  18 
  (9). 
  Last 
  joint 
  of 
  rostrum 
  more 
  than 
  twice 
  as 
  long 
  as 
  the 
  penultimate, 
  stiletto- 
  

  

  shaped 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  S. 
  berlesei, 
  Guerc. 
  

  

  19 
  (8). 
  Hairs 
  on 
  body 
  flattened 
  and 
  broadened 
  apically 
  ; 
  body 
  of 
  apterous 
  

  

  viviparous 
  $£ 
  narrow 
  and 
  long, 
  its 
  width 
  about 
  two-fifths 
  of 
  its 
  length. 
  

   Bessarabia 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  S. 
  tshernavini, 
  sp. 
  n. 
  

  

  20 
  (1). 
  Antennae 
  6-jointed, 
  one-half 
  to 
  two-thirds 
  the 
  length 
  of 
  bodv 
  or 
  even 
  

  

  longer 
  than 
  it. 
  

  

  21 
  (30). 
  Antennae 
  shorter 
  than 
  body, 
  about 
  one-half 
  to 
  two-thirds 
  of 
  its 
  length. 
  

  

  22 
  (29). 
  Dorsal 
  surface 
  of 
  body 
  not 
  covered 
  with 
  tubercles 
  ; 
  spur 
  of 
  last 
  joint 
  

  

  of 
  antennae 
  shorter 
  than 
  base 
  of 
  joint 
  ; 
  in 
  living 
  individuals 
  antennae 
  

   directed 
  forwards. 
  On 
  leaves 
  of 
  sedge 
  (Carex).. 
  

  

  Genus 
  Allaphis, 
  Mordv. 
  (= 
  Callaphis, 
  Mordv., 
  1908 
  ; 
  

  

  Tripsaphis, 
  Gillette, 
  1917). 
  

  

  