﻿^22 
  REPORT 
  OF 
  NEW 
  JERSEY 
  STATE 
  MUSEUM. 
  

  

  SAYOMYIA 
  Coq. 
  

  

  S. 
  albipes 
  Johann. 
  Larvae 
  have 
  been 
  taken 
  in 
  the 
  Great 
  Piece 
  Meadows, 
  

   at 
  Paterson 
  IV, 
  VII, 
  IX, 
  Arlington 
  V, 
  Newark 
  VIII, 
  Trenton, 
  Delair 
  

   VII, 
  and 
  the 
  winter 
  is 
  apparently 
  passed 
  in 
  that 
  stage. 
  Breeds 
  in 
  the 
  

   more 
  permanent 
  woodland 
  pools, 
  but 
  is 
  also 
  found 
  in 
  more 
  open 
  

   water. 
  

  

  S. 
  punctipennis 
  Say. 
  Chester 
  VIII, 
  1, 
  Delair 
  IX, 
  17, 
  Riverton 
  V, 
  19. 
  

  

  CORETHRA 
  Meig. 
  

  

  C. 
  cinctipes 
  Coq. 
  Lake 
  Hopatcong 
  VII, 
  22, 
  Great 
  Piece 
  Meadow 
  IV, 
  10, 
  

   Paterson 
  V, 
  6, 
  New 
  Brunswick 
  V, 
  3, 
  Lahaway 
  III, 
  28-IV, 
  26— 
  all 
  

   larvas. 
  This 
  is 
  a 
  common 
  spring 
  species 
  breeding 
  in 
  large 
  woodland 
  

   pools, 
  the 
  July 
  specimen 
  being 
  a 
  straggler. 
  The 
  larva 
  is 
  predaceous, 
  

   and 
  when 
  food 
  is 
  scarce 
  becomes 
  cannibalistic. 
  

  

  C. 
  lintneri 
  Felt. 
  Larvae 
  taken 
  at 
  Millburn 
  in 
  May 
  were 
  not 
  recognized 
  

   as 
  distinct 
  from 
  the 
  preceding 
  until 
  the 
  adults 
  emerged 
  a 
  few 
  days 
  

   later. 
  

  

  CORETHRELLA 
  Coq. 
  

  

  C. 
  brakeleyi 
  Coq. 
  This 
  is 
  a 
  very 
  rare 
  species 
  which 
  breeds 
  in 
  cold 
  spring 
  

   pools 
  and 
  sphagnum 
  swamps. 
  Larv^ 
  have 
  been 
  taken 
  by 
  Mr. 
  

   Brakeley 
  at 
  Lahaway 
  in 
  almost 
  every 
  month 
  of 
  the 
  year, 
  and 
  beside 
  

   that 
  it 
  has 
  been 
  taken 
  only 
  at 
  Delair, 
  by 
  Mr. 
  Seal, 
  and 
  at 
  Trenton 
  

   by 
  Mr. 
  Grossbeck. 
  

  

  Family 
  MYCETOPHILID^. 
  

  

  These 
  are 
  fungus-gnats, 
  also 
  resembling 
  mosquitoes 
  or 
  midges, 
  but 
  the 
  

   antennae 
  are 
  not 
  verticillate 
  or 
  furnished 
  with 
  whorls 
  of 
  hair. 
  In 
  the 
  

   male 
  the 
  abdomen 
  ends 
  in 
  a 
  forceps-like 
  process, 
  and 
  in 
  the 
  female 
  in 
  a 
  

   pointed 
  ovipositor. 
  There 
  are 
  other 
  structural 
  differences 
  to 
  characterize 
  

   the 
  family, 
  but 
  these 
  are 
  not 
  easily 
  seen 
  except 
  by 
  the 
  student. 
  The 
  

   larvae 
  are 
  feeders 
  in 
  fungus 
  and 
  in 
  decaying 
  vegetation 
  generally, 
  and 
  

   might 
  be 
  considered 
  at 
  worst 
  harmless 
  were 
  it 
  not 
  that 
  they 
  attack 
  culti- 
  

   vated 
  mushrooms. 
  The 
  larvas 
  are 
  white, 
  slender, 
  have 
  a 
  black 
  head, 
  

   and 
  often 
  live 
  in 
  large 
  colonies. 
  Some 
  of 
  them 
  have 
  the 
  curious 
  habit 
  of 
  

   forming 
  great 
  rope-like 
  masses 
  when 
  ready 
  to 
  enter 
  the 
  pupal 
  stage, 
  

   sometimes 
  travelling 
  considerable 
  distances 
  to 
  find 
  a 
  suitable 
  place. 
  

  

  Where 
  they 
  occur 
  in 
  mushroom 
  beds, 
  fumigating 
  frequently 
  with 
  to- 
  

   bacco 
  or 
  pyrethrum 
  to 
  kill 
  the 
  adults 
  inside, 
  and 
  keeping 
  all 
  windows 
  

   closely 
  screened 
  to 
  prevent 
  the 
  entrance 
  of 
  specimens 
  from 
  outside, 
  is 
  

   the 
  only 
  practical 
  measure 
  known 
  to 
  me. 
  

  

  PLESIASTINA 
  Winn. 
  (SYMMERUS 
  Wlk.) 
  

   P. 
  annulata 
  Meig. 
  Riverton 
  IV, 
  19. 
  

  

  