﻿24 
  REPORT 
  OF 
  NEW 
  JERSEY 
  STATE 
  MUSEUM. 
  

  

  densely 
  covered 
  with 
  hair, 
  the 
  hind 
  pair 
  is 
  folded 
  under 
  the 
  fore 
  

   wings 
  and 
  the 
  mouth 
  parts 
  are 
  aborted. 
  The 
  transformations 
  

   are 
  complete, 
  and 
  some 
  of 
  the 
  local 
  caddices 
  or 
  cases 
  are 
  marvels 
  

   of 
  structure 
  and 
  mimicry. 
  

  

  Direct 
  descendants 
  of 
  this 
  order 
  are 
  the 
  Lepidoptera 
  or 
  scale- 
  

   winged 
  insects, 
  including 
  butterflies 
  and 
  moths. 
  In 
  these 
  the 
  

   mouth 
  parts 
  of 
  the 
  adult 
  are 
  modified 
  into 
  a 
  coiled 
  tongue 
  serving 
  

   only 
  to 
  lap 
  up 
  liquid 
  food, 
  while 
  the 
  caterpillars 
  or 
  larvae 
  have 
  the 
  

   mandibles 
  well 
  developed 
  and 
  chew 
  their 
  food. 
  The 
  transforma- 
  

   tions 
  are 
  complete. 
  

  

  The 
  mud 
  or 
  earth 
  living 
  larvcT 
  developed 
  at 
  once 
  into 
  terrestrial 
  

   types, 
  of 
  which 
  the 
  oldest 
  and 
  most 
  generalized 
  are 
  the 
  Mccoptera 
  

   or 
  scorpion 
  flies. 
  They 
  derive 
  their 
  common 
  name 
  from 
  the 
  fact 
  

   that 
  the 
  males 
  of 
  many 
  of 
  the 
  species 
  are 
  furnished 
  with 
  a 
  promi- 
  

   nent 
  anal 
  forceps 
  curved 
  upward 
  like 
  the 
  tail 
  of 
  a 
  scorpion, 
  

   although 
  entirely 
  harmless. 
  The 
  wings 
  are 
  long, 
  rather 
  narrow, 
  

   net-veined 
  and 
  not 
  folded. 
  The 
  mouth 
  parts 
  are 
  prolonged 
  into 
  

   a 
  beak-like 
  structure 
  in 
  which 
  the 
  parts 
  are 
  much 
  divided 
  and 
  

   synthetic 
  in 
  type. 
  They 
  are 
  predatory 
  in 
  all 
  stages 
  and 
  the 
  trans- 
  

   formations 
  are 
  complete. 
  

  

  The 
  Hymenoptera 
  contain 
  the 
  bees, 
  wasps, 
  ants, 
  saw-flies 
  and 
  

   the 
  like, 
  and 
  among 
  them 
  we 
  find 
  the 
  highest 
  type 
  of 
  social 
  

   organization 
  and 
  the 
  extreme 
  of 
  intellectual 
  development 
  among 
  

   insects. 
  The 
  mouth 
  parts 
  are 
  in 
  many 
  cases 
  elongated 
  to 
  enable 
  

   them 
  to 
  gather 
  the 
  nectar 
  of 
  flowers, 
  and 
  they 
  have 
  four 
  trans- 
  

   parent 
  wings 
  with 
  comparatively 
  few 
  veins 
  and 
  cells 
  except 
  in 
  

   the 
  saw-flies, 
  where 
  the 
  venation 
  is 
  more 
  complicated. 
  The 
  trans- 
  

   formation 
  is 
  complete 
  and 
  in 
  many 
  cases 
  the 
  larva 
  is 
  dependent 
  

   for 
  its 
  food 
  upon 
  the 
  supply 
  gathered 
  by 
  its 
  parent. 
  

  

  The 
  Diptera 
  or 
  flies 
  can 
  always 
  be 
  recognized 
  by 
  having 
  two 
  

   wings 
  only, 
  the 
  hind 
  pair 
  appearing 
  as 
  vestiges 
  merely. 
  The 
  

   larvae 
  are 
  mostly 
  footless, 
  grub-like 
  or 
  maggots, 
  and, 
  while 
  there 
  

   is 
  no 
  development 
  of 
  social 
  or 
  intellectual 
  characters, 
  the 
  flies 
  are 
  

   in 
  their 
  transformations 
  and 
  p^hysical 
  structure 
  at 
  the 
  head 
  of 
  the 
  

   insect 
  world. 
  The 
  mouth 
  structures 
  are 
  variably 
  developed 
  and 
  

   may 
  be 
  adapted 
  for 
  lapping 
  as 
  in 
  the 
  common 
  house-fly, 
  or 
  for 
  

   piercing 
  and 
  sucking 
  as 
  in 
  the 
  equally 
  common 
  mosquito. 
  The 
  

  

  