﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  I908 
  /I 
  

  

  Appendix: 
  A 
  

  

  STUDIES 
  OF 
  AQUATIC 
  INSECTS 
  

  

  A 
  PECULIAR 
  NEW 
  MAY 
  FLY 
  FROM 
  SACANDAGA 
  PARK 
  

  

  BY 
  JAMES 
  G. 
  XEEDHAM 
  

  

  Among 
  a 
  small 
  lot 
  of 
  neuropteroid 
  insects 
  sent 
  me 
  by 
  Dr 
  Felt 
  

   for 
  determination, 
  was 
  a 
  new 
  May 
  fly 
  with 
  a 
  remarkable 
  develop- 
  

   ment 
  of 
  the 
  adbomen. 
  Five 
  of 
  the 
  abdominal 
  segments 
  have 
  their 
  

   flaring 
  lateral 
  margins 
  expanded 
  broadly, 
  forming 
  a 
  wide 
  parachute 
  

   or 
  aeroplane. 
  This 
  peculiarity 
  has 
  its 
  parallel 
  among 
  known 
  May 
  

   flies 
  only 
  in 
  the 
  Xew 
  Zealand 
  species 
  Oniscigaster 
  wake- 
  

   f 
  leldi 
  ; 
  a 
  species 
  that 
  was 
  described 
  by 
  ]\IcLachlan 
  36 
  years 
  

   ago, 
  and 
  made 
  the 
  subject 
  of 
  a 
  special 
  report 
  by 
  him 
  to 
  the 
  British 
  

   Association 
  for 
  the 
  Advancement 
  of 
  Science^ 
  and 
  an 
  announcement 
  

   to 
  the 
  Entomological 
  Society 
  of 
  London,- 
  and 
  of 
  two 
  special 
  

   papers.^ 
  The 
  last 
  paper 
  gave 
  full 
  descriptions 
  of 
  both 
  nymphal 
  and 
  

   adult"* 
  stages. 
  Eaton's 
  Monographic 
  Revision 
  of 
  Recent 
  Ephemer- 
  

   idae 
  pages 
  224-26 
  gives 
  a 
  description 
  of 
  the 
  adult 
  insect, 
  and 
  adds 
  

   [pi. 
  21, 
  fig. 
  2>^'] 
  an 
  excellent 
  figure 
  of 
  the 
  venation. 
  In 
  Hutton's 
  

   list 
  of 
  Xew 
  Zealand 
  Neuroptera^ 
  is 
  found 
  another 
  description 
  of 
  

   the 
  adult. 
  In 
  1899 
  Eaton^ 
  added 
  two 
  additional 
  Xew 
  Zealan' 
  

   species 
  to 
  the 
  genus, 
  O 
  . 
  intermedins, 
  with 
  considerably 
  less 
  

   dilatation 
  of 
  the 
  lateral 
  margins 
  of 
  the 
  abdominal 
  segments, 
  and 
  

   C 
  . 
  d 
  i 
  s 
  t 
  a 
  n 
  s 
  , 
  with 
  hardly 
  any 
  lateral 
  expansion 
  at 
  all. 
  So 
  Eaton 
  

   dropped 
  from 
  his 
  characterization 
  of 
  the 
  genus 
  all 
  mention 
  of 
  the 
  

   onisciform 
  abdomen, 
  that 
  had 
  brought 
  the 
  type 
  species 
  into 
  such 
  

   prominent 
  notice. 
  In 
  1904 
  Hudson 
  described 
  the 
  three 
  species 
  in 
  

   his 
  Xew 
  Zealand 
  Xeuroptera 
  [p. 
  42-45] 
  and 
  added 
  a 
  much 
  needed 
  

   description 
  of 
  the 
  nymph 
  ofO. 
  distans 
  [pi. 
  i, 
  fig. 
  11; 
  pi. 
  11, 
  

   fig. 
  15], 
  which 
  appears 
  to 
  agree 
  quite 
  well 
  with 
  that 
  of 
  the 
  typical 
  

   species. 
  

  

  The 
  X'ew 
  York 
  ]\Iay 
  fly 
  about 
  to 
  be 
  described 
  exhibits 
  a 
  more 
  

  

  1 
  Report 
  of 
  1873. 
  P- 
  118 
  (1874). 
  

  

  2 
  Proceedings 
  for 
  1874, 
  p. 
  vi. 
  

  

  3 
  Ent. 
  Mo. 
  Mag. 
  10:108-9, 
  wood 
  cut, 
  1873; 
  Linn. 
  See. 
  Zool. 
  Jour. 
  1874. 
  12:39-46, 
  pi. 
  5, 
  

   fig. 
  1-5- 
  

  

  * 
  Tne 
  figure 
  of 
  the 
  adult 
  is 
  copied 
  by 
  Sharpe 
  in 
  volume 
  s 
  of 
  the 
  Cambridge 
  Natural 
  History. 
  

  

  5 
  New 
  Zeal. 
  Inst. 
  Trans. 
  1898. 
  31:218. 
  

  

  ' 
  Ent. 
  Soc. 
  Lond. 
  Trans, 
  p. 
  292-93, 
  pi. 
  10. 
  fig. 
  6a, 
  6?', 
  6c. 
  

  

  