*SHOW ~ British Entomology - The families of Trichoptera. 15 May 2003. 
 
*CHARACTER LIST 
 
#1. <synonyms:>/
 
#2. adults <whether minute>/
       1. minute <fore-wings up to 4 mm long>/
       2. not minute <fore-wings more than 4 mm long: implicit>/
 
#3. adults <whether black>/
       1. black/
       2. not black/
 
#4. antennae <relative length>/
       1. much shorter than the fore-wings/
       2. about as long as the fore-wings/
       3. considerably longer than the fore-wings/
 
#5. antennae <thickness>/
       1. stout/
       2. slender/
 
#6. antennae <relative length of the first segment>/
       1. with an elongated first segment <this at least as long as the head>/
       2. with a short first segment <this shorter than the head>/
 
#7. ocelli <presence>/
       1. present/
       2. absent/
 
#8. maxillary palps <number of segments>/
       segmented/
 
#9. the maxillary palps of males <number of segments>/
       segmented/
 
#10. maxillary palps <whether filiform>/
       1. filiform, with cylindrical segments/
       2. thick/
 
#11. the terminal segment <of the maxillary palps, constitution and relative
          length: see Notes>/
       1. flexible, multi-articulated, annulated and generally relatively
          elongated <often longer than all the other segments together>/
       2. inflexible, not multi-articulated, not annulated, and not much
          elongated/
 
#12. the mesoscutum <warts>/
       1. with a pair of warts/
       2. without warts/
 
#13. the scutellum <warts>/
       1. exhibiting a large median wart/
       2. exhibiting a pair of warts/
       3. without conspicuous warts/
 
#14. the fringes of the wings <relative length>/
       1. longer than the maximum width of the hind-wings/
       2. shorter than the maximum width of the hind-wings <implicit>/
 
#15. the fore-wings <length>/
       mm long/
 
#16. the fore-wings <presence of median cell>/
       1. with a <closed> median cell/
       2. without a <closed> median cell/
 
#17. the fore-wings <presence of a discoidal cell>/
       1. with a <closed> discoidal cell/
       2. without a <closed> discoidal cell/
 
#18. apical forks <number exhibited by the forewings>/
 
#19. the fore-wings <presence of apical fork no. 1>/
       1. exhibiting apical fork no. 1/
       2. lacking apical fork no.1/
 
#20. the fore-wings <presence of apical fork no. 2>/
       1. exhibiting apical fork no. 2/
       2. lacking apical fork no.2/
 
#21. the hind-wings <width relative to that of the fore-wings>/
       1. narrower than the fore-wings/
       2. similar in width to the fore-wings/
       3. wider than the fore-wings/
 
#22. the hind-wings <presence of a median cell>/
       1. with a <closed> median cell/
       2. without a <closed> median cell/
 
#23. the hind-wings <presence of a discoidal cell>/
       1. with a <closed> discoidal cell/
       2. without a <closed> discoidal cell/
 
#24. apical forks <number exhibited by the hind-wings>/
 
#25. the hind-wings <presence of apical fork no. 1>/
       1. exhibiting apical fork no. 1/
       2. lacking apical fork no.1/
 
#26. front tibia <number of spurs>/
       spurred/
 
#27. middle tibia <number of spurs>/
       spurred/
 
#28. hind tibia <number of spurs>/
       spurred/
 
#29. the larvae <whether constructing a transportable case or a fixed tunnel,
          or free-living>/
       1. constructing and living in transportable cases/
       2. constructing fixed retreats of stones and vegetable dbris/
       3. constructing fixed, silken tubes/
       4. inhabiting freshwater sponges/
       5. case-less and free swimming/
 
#30. the <free swimming> larvae <whether net-forming>/
       1. forming silken nets/
       2. not net-forming/
 
#31. the larval case <structure, molannid type>/
       1. shield-shaped, and made of sand grains, with wing-like lateral
          extensions/
       2. not of sand grains and shield-shaped with wing-like extensions
          <implicit>/
 
#32. the larval case <structure and shape, whether odontocerid type>/
       1. made of sand grains and slightly curved, the hind extremity covered
          by a dark membrane with a central slit/
       2. not made of sand grains and curved, the hind extremity not covered
          by a dark membrane with a central slit <implicit>/
 
#33. the larval case <size and shape, whether hydroptilid type>/
       1. very small, and seed- or flask-shaped/
       2. not particularly small, not seed- or flask-shaped <implicit>/
 
#34. the larval case <manner of construction, whether phryganeid type>/
       1. constructed of vegetable matter arranged spirally, open at both
          ends/
       2. not constructed of vegetable matter arranged spirally <implicit>/
 
#35. the larvae <general form, campodeoid or eruciform: see Notes>/
       1. campodeoid <body dorsiventrally compressed, head not inclined>/
       2. eruciform <body cylindrical, head markedly inclined>/
 
#36. the labrum <of the larva, sclerotization>/
       1. sclerotized/
       2. not sclerotized/
 
#37. the right mandible <of the larva, whether bearing a brush of hairs on the
          inner surface>/
       1. exibiting a brush of hairs on its inner (concave) surface/
       2. without a brush of hairs on its inner surface/
 
#38. the thorax <of the larva, presence of a forwardly-directed, prosternal
          horn>/
       1. with a forwardly-directed prosternal horn between the first pair of
          legs/
       2. without a prosternal horn/
 
#39. the anterior margin of the pronotum <of the larva, extent of
          sclerotization>/
       1. very heavily sclerotized/
       2. sclerotized, but only lightly so/
 
#40. the mesonotum <of the larva, sclerotization>/
       1. sclerotized <at least to some extent>/
       2. entirely membranous/
 
#41. the mesonotum <of the larva, degree of division>/
       1. entire/
       2. divided longitudinally into two sclerites/
       3. divided into four sclerites/
       4. divided into eight sclerites/
 
#42. the metanotum <of the larva, sclerotization>/
       1. sclerotized <at least to some extent>/
       2. entirely membranous/
 
#43. the metanotum <of the larva, degree of division>/
       1. entire/
       2. divided longitudinally into two sclerites/
       3. with two horizontally elongated slerites, the anterior one broad
          with an excised hind margin, the posterior one narrow and widened in
          the middle/
       4. divided into four sclerites/
       5. divided into six sclerites/
 
#44. the metanotum <of the larva, presence of brushes of bristles>/
       1. bearing brushes of bristles/
       2. without brushes of bristles/
 
#45. the metasternum <of the larva, bristles>/
       1. with either a dense zone of stout bristles, or a transverse row of
          at least six/
       2. with no more than a median pair of bristles/
 
#46. abdominal segment 1 <of the larva, whether papillate>/
       1. with <two or three> retractable papillae/
       2. without retractable papillae/
 
#47. abdominal segment 8 <of the larva, with or without a lateral comb of fine
          spicules>/
       1. with a lateral comb of fine spicules/
       2. without a lateral comb of fine spicules <with no more than a few
          spicules above the lateral fringe line>/
 
#48. the larva <fusion of terminal abdominal prolegs of the larva>/
       1. with the terminal abdominal prolegs fused basally, forming an
          ostensible tenth segment/
       2. with the terminal abdominal prolegs free of one another <i.e., not
          fused basally to form an ostensible tenth segment>/
 
#49. <general comments:>/
 
#50. <number of species in Britain:>/
       species/
 
#51. genera:/
 
#52. <abbreviated taxon name:>/
 
#53. <illustrations:>/
