﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  443 
  

  

  Lanthus 
  albistylus 
  Selys 
  

  

  1878 
  Gomphus 
  albistylus 
  Selys, 
  Acad. 
  Belg. 
  (2) 
  Bui. 
  46:460 
  (original 
  

  

  descriptiou 
  of 
  5 
  from 
  Maine) 
  

   1878 
  Gomphus 
  naevius 
  Acad. 
  Belg. 
  (2) 
  Bnl. 
  46:462 
  (original 
  description 
  

  

  of 
  5 
  from 
  Pennsylvania) 
  

   1890 
  Aeshna 
  albistyla 
  Kirby, 
  Cat. 
  Neur. 
  Odoii. 
  p. 
  66 
  (bibliography) 
  

   1890 
  Aeshna 
  naevius 
  Kirby, 
  Cat. 
  Neur. 
  Odou. 
  p. 
  66 
  (bibliography) 
  

   1892Gomphns 
  albistylus 
  Am. 
  ent. 
  soc. 
  Trans. 
  19 
  : 
  351 
  (listed) 
  

  

  1892 
  Gomphus 
  albistylus 
  Banks, 
  Am. 
  ent. 
  soc. 
  Trans. 
  19 
  : 
  352 
  (listed) 
  

  

  1893 
  Gomphus 
  albistylus 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20:242 
  (descrip- 
  

  

  tion) 
  

   1898 
  Gomphus 
  albistylus 
  Harvey, 
  Ent. 
  news. 
  9: 
  63-65 
  (description, 
  figure 
  

   and 
  notes) 
  

  

  Still 
  known 
  only 
  from 
  Maine 
  and 
  Pennsylvania, 
  in 
  which 
  states, 
  how- 
  

   ever, 
  Prof. 
  F. 
  L. 
  Harvey 
  and 
  E. 
  B. 
  Williamson, 
  respectively, 
  have 
  col- 
  

   lected 
  a 
  goodly 
  number 
  of 
  specimens 
  of 
  both 
  sexes. 
  There 
  is 
  in 
  the 
  

   Cornell 
  university 
  collection 
  a 
  specimen 
  lacking 
  half 
  the 
  abdomen, 
  

   probably 
  of 
  this 
  species, 
  from 
  North 
  Carolina. 
  The 
  nymph 
  is 
  not 
  

   known 
  (unless 
  the 
  ones 
  described 
  by 
  Hagen 
  should 
  prove 
  to 
  be 
  of 
  this 
  

   species, 
  instead 
  of 
  L. 
  p 
  a 
  r 
  v 
  u 
  1 
  u 
  s 
  , 
  as 
  I 
  have 
  supposed. 
  I 
  have 
  not 
  

   compared 
  my 
  own 
  nymphs 
  with 
  Hagen's 
  types). 
  

  

  GOMPHUS 
  

  

  The 
  United 
  States 
  is 
  the 
  center 
  of 
  abundance 
  for 
  this 
  great 
  genus, 
  

   and 
  it 
  is 
  nowhere 
  better 
  represented 
  than 
  in 
  New 
  York 
  state. 
  Our 
  list 
  

   includes 
  17 
  regional 
  species, 
  only 
  two 
  of 
  which 
  have 
  not 
  yet 
  been 
  act- 
  

   ually 
  taken 
  in 
  the 
  state. 
  They 
  are 
  species 
  of 
  medium 
  or 
  large 
  size, 
  

   often 
  very 
  local, 
  and 
  locally 
  very 
  abundant. 
  They 
  are 
  found 
  about 
  

   water, 
  and 
  in 
  woods 
  and 
  copses 
  adjacent 
  to 
  it. 
  They 
  are 
  often 
  flushed 
  

   from 
  a 
  bare 
  path 
  or 
  roadway 
  ; 
  they 
  are 
  perhaps 
  most 
  commonly 
  seen 
  

   resting 
  flat 
  on 
  the 
  surface 
  of 
  some 
  log 
  which 
  stretches 
  its 
  length 
  across 
  a 
  

   stream; 
  they 
  rarely 
  perch 
  atop 
  a 
  slender 
  twig 
  after 
  the 
  manner 
  of 
  the 
  

   skimmers 
  (libellulines). 
  Our 
  species 
  fly 
  mainly 
  in 
  June, 
  though 
  G. 
  

   scudderi 
  is 
  a 
  midsummer, 
  and 
  G, 
  spinicepsa 
  late 
  summer 
  

   species. 
  

  

  The 
  nymphs 
  form 
  a 
  most 
  important 
  part 
  of 
  the 
  bottom 
  fauna 
  in 
  all 
  

   clear 
  waters. 
  They 
  are 
  active 
  burro 
  wers, 
  taking 
  their 
  prey 
  either 
  on 
  or 
  

   beneath 
  the 
  surface 
  of 
  the 
  bottom 
  silt. 
  They 
  are 
  very 
  rapacious, 
  and 
  

   will 
  eat 
  almost 
  any 
  living 
  animals 
  small 
  enough 
  to 
  be 
  held 
  by 
  their 
  pow- 
  

   erful 
  grasping 
  labia. 
  The 
  nymphs 
  are 
  highly 
  speciahzed 
  for 
  their 
  pecu- 
  

   liar 
  life. 
  They 
  are 
  more 
  unlike 
  than 
  are 
  the 
  imagos, 
  and 
  in 
  general 
  more 
  

  

  