﻿NO. 
  1966. 
  SYXOPSIS 
  OF 
  NEOTROPICAL 
  LIMNOBIN^— 
  ALEXANDER. 
  493 
  

  

  DESCRIPTIONS 
  OF 
  GENERA 
  AND 
  SPECIES. 
  

  

  Genus 
  LECTERIA 
  Osten 
  Saeken. 
  

  

  Lecteria 
  Osten 
  Sacken, 
  Studies, 
  etc., 
  1887, 
  pt. 
  2; 
  Berl. 
  Ent. 
  Zeitschr., 
  vol. 
  31, 
  

  

  p. 
  206. 
  

   Psaroniits 
  Enderlein, 
  Zool. 
  Jahrb., 
  vol. 
  32, 
  1912, 
  pt. 
  1, 
  pp. 
  50, 
  51. 
  

  

  I 
  have 
  included 
  in 
  this 
  genus 
  Limnohia 
  armillaris 
  Fabricius, 
  made 
  

   the 
  type 
  of 
  this 
  genus 
  by 
  Osten 
  Sacken, 
  and 
  which 
  has 
  spurless 
  

   tibiae; 
  Psaronius 
  lituratus 
  Enderlein 
  (=Tipula 
  obscura 
  Fabricius) 
  

   and 
  Lecteria 
  obliterata, 
  new 
  species, 
  which 
  have 
  spurred 
  tibiae. 
  As 
  

   I 
  have 
  stated 
  in 
  a 
  later 
  paragraph, 
  I 
  believe 
  that 
  the 
  .tibial 
  spur 
  

   character 
  has 
  been 
  overdone. 
  The 
  venation 
  of 
  these 
  three 
  species 
  

   is 
  so 
  remarkably 
  similar 
  that 
  I 
  have 
  no 
  hesitation, 
  in 
  view 
  of 
  the 
  

   existing 
  data, 
  in 
  referring 
  all 
  three 
  species 
  to 
  the 
  genus 
  Lecteria. 
  

  

  Lecteria 
  is 
  sufficiently 
  well 
  distinguished, 
  venationally, 
  in 
  the 
  

   extreme 
  length 
  of 
  subcosta, 
  the 
  long 
  radial 
  sector, 
  strongly 
  arcuated 
  

   at 
  its 
  origin 
  and 
  thence 
  running 
  parallel 
  with 
  radius, 
  the 
  tendency 
  

   for 
  Ro 
  to 
  shorten 
  and 
  disappear, 
  etc. 
  The 
  described 
  species 
  are 
  all 
  

   Neotropical, 
  but 
  Mr. 
  Edwards 
  informs 
  me 
  that 
  the 
  British 
  Museum 
  

   possesses 
  three 
  undescribed 
  species 
  from 
  Africa. 
  I 
  believe 
  that 
  the 
  

   presence 
  or 
  absence 
  of 
  spurs, 
  in 
  this 
  group 
  of 
  species, 
  has 
  the 
  tendency 
  

   to 
  separate 
  from 
  one 
  another 
  species 
  that 
  are 
  in 
  reality 
  closely 
  

   allied. 
  Thus 
  Enderlein 
  described 
  as 
  Lininophilini 
  two 
  species 
  

   which 
  possessed 
  tibial 
  spurs. 
  The 
  tyjDe 
  of 
  the 
  genus 
  Lecteria, 
  armil- 
  

   laris 
  Fabricius, 
  seems 
  to 
  vary 
  considerably 
  in 
  venation. 
  The 
  speci- 
  

   mens 
  upon 
  which 
  Osten 
  Sacken 
  based 
  his 
  genus 
  possessed 
  a 
  super- 
  

   numerary 
  cross 
  vein 
  in 
  cell 
  Rg, 
  and 
  m 
  some 
  specimens 
  another 
  m 
  

   cell 
  Rg. 
  The 
  types 
  of 
  Limnohia 
  caloimB 
  Walker 
  m 
  the 
  British 
  Museum, 
  

   as 
  well 
  as 
  the 
  three 
  specimens 
  I 
  possess, 
  entirely 
  lack 
  these 
  cross 
  

   veins. 
  It 
  is 
  probably 
  a 
  case 
  comparable 
  to 
  the 
  related 
  genus 
  Cladura 
  

   Osten 
  Sacken 
  where 
  cross 
  veins 
  may 
  occur 
  almost 
  anywhere 
  on 
  the 
  

   wing 
  disk.* 
  

  

  KEY 
  TO 
  THE 
  SPECIES 
  OF 
  LECTERIA. 
  

  

  1. 
  Wings 
  -nnithout 
  distinct 
  markings 
  (antennae 
  with 
  the 
  basal 
  segments 
  yellow, 
  fla- 
  

  

  gellum 
  black) 
  obliterata, 
  new 
  species. 
  (Guiana) 
  

  

  Wings 
  with 
  brown 
  markings 
  2. 
  

  

  2. 
  Wrings 
  with 
  abundant 
  brown 
  dots 
  in 
  all 
  of 
  the 
  cells., 
  conspersa 
  Enderlein 
  ^ 
  (Brazil). 
  

   Wings 
  with 
  the 
  markings 
  larger 
  and 
  confined 
  to 
  the 
  neighborhood 
  of 
  the 
  veins 
  3. 
  

  

  3. 
  Wing 
  markings 
  confined 
  to 
  a 
  spot 
  at 
  the 
  base 
  of 
  Rs, 
  along 
  deflection 
  of 
  Pv.j+5, 
  and 
  

  

  in 
  cell 
  second 
  R,; 
  cell 
  first 
  M2 
  is 
  hexagonal, 
  the 
  fusion 
  of 
  Cui 
  and 
  Mj 
  slight, 
  

  

  less 
  than 
  cross 
  vein 
  r-m 
  obscura 
  Fabricius 
  ^ 
  (Guiana-Brazil). 
  

  

  Wing-marking 
  more 
  extensive 
  4. 
  

  

  1 
  See 
  Alexander 
  and 
  Leonard, 
  Venational 
  Variation 
  in 
  CTadura, 
  Jour. 
  N. 
  Y. 
  Ent. 
  Soc, 
  vol. 
  20, 
  Mar., 
  

   1912, 
  pp. 
  36-39, 
  pi. 
  4. 
  

  

  2 
  Zool. 
  Jahrbuch., 
  1912, 
  vol. 
  32, 
  pt. 
  1, 
  Stud.uber 
  die 
  Tipuliden, 
  etc., 
  pp. 
  49,50 
  (fig. 
  Di) 
  (as 
  DactylolaUs). 
  

   » 
  Syst. 
  Antl., 
  1805, 
  p. 
  27 
  (as 
  Tiputa); 
  Wiedemann, 
  Auss. 
  Zweifl. 
  Ins., 
  1828, 
  vol. 
  1, 
  p. 
  24 
  (as 
  Limnohia). 
  

  

  