Caribbean, Londoño-Mesa, 2009

Londoño-Mesa, Mario H., 2009, Terebellidae (Polychaeta: Terebellida) from the Grand Caribbean region 2320, Zootaxa 2320 (1), pp. 1-93 : 7-10

Key to subfamilies, genera and species of Terebellidae from the Grand Caribbean

1. Thoracic uncini in double or alternating rows on some chaetigers...................................( Terebellinae Grube, 1850 ) 2

- Thoracic uncini in single rows throughout, or uncini absent ..................................................................................... 35

2. With branchiae .............................................................................................................................................................. 3

- Without branchiae ...................................................................................................................................................... 30

3. Notochaetae with serrate tips ...................................................................................................................................... 4

- Notochaetae with smooth tips .................................................................................................................................... 13

4. With lateral lappets .......................................................................................................( Neoamphitrite Hessle, 1917 ) 5

- Without lateral lappets ................................................................................................................................................. 6

5. Thoracic uncini in single row from chaetiger 2–6 ........................................................ Neoamphitrite sp. A Kritzler, 1984

- Thoracic uncini in single row from chaetiger 2–7 .................................................................................. N. glasbyi sp. nov.

6. Neuropodia from chaetiger 3 ............................................................................................. ( Neoleprea Hessle, 1917 ) 7

- Neuropodia from chaetiger 2 ....................................................................................................................................... 8

7. With eyespots, 19 segments with notochaetae .............................................................. Neoleprea sp. A Kritzler, 1984

- Without eyespots; 27 segments with notochaetae ................................................................................. Neoleprea sp. 1

8. Branchiae on segments 2–3 ....................................................................... Amphitritides bruneocomata ( Ehlers, 1887)

- Branchiae on other combination of segments .............................................................................................................. 9

9. Branchiae on segments 2–4, branched from the base or with short stalk ............................ ( Terebella Linnaeus, 1767 ) 10

- Branchiae on non sequential segments ..................................................................................................................... 11

10. Eyespots present; about 80 segments with notochaetae ............................................................ T. verrilli Holthe, 1986

- Eyespots absent; about 26 segments with notochaetae .......................................................... T. turgidula Ehlers, 1887

11. Notopodia from segment 2, neuropodia from segment 3 .................................... Polymniella aurantiaca ( Verrill, 1900)

- Notopodia from segment 4; neuropodia from segment 5 ........................................( Terebellobranchia Day, 1951 ) 12 12. Branchiae on segments 3, 4 and 7; uncini MF:1:4:4 ...................... T. mchughae Londoño-Mesa & Carrera-Parra, 2005

- Branchiae on segments 2, 5 and 8; uncini MF:3:3–4 ............................................. T. hiata ( Treadwell, 1931) comb. nov.

13. One or two pairs of branchiae .................................................................................................................................... 14

- Three pairs of branchiae.............................................................................................................................................. 22

14. Uncini of neuropodia one, at least, with long posterior process ............................( Pista Malmgren, 1866 , partim) 15

- Uncini of all neuropodia with short or without posterior process .............................................................................. 19

15. One pair of branchiae ............................................................................................................. Pista sp. B Kritzler, 1984

- Two pairs of branchiae; branchiae branched .............................................................................................................. 16

16. All thoracic uncini with long posterior process ................................................................ P. cf. fasciata (Grube, 1870)

- Some thoracic uncini without posterior process ......................................................................................................... 17

17. Segment 4 with two dorsal lobes ....................................................................................................................................... 18

- Segment 4 lacking dorsal lobes; notochaetae on each notopodium of two lengths ....................................................... ................................................................................................................................ P. cf. quadrilobata ( Augener, 1918

18. Dorsal lobes long and close to each other ............................................................................. P. palmata ( Verrill, 1873)

- Dorsal lobes short, separated by a thick mid-dorsal tissue ................................. P. cetrata ( Ehlers, 1887) comb. nov.

19. Lateral lappets absent ..................................................................................................... Nicolea modesta Verrill, 1900

- Lateral lappets present ............................................................................................................................................... 20

20. Lateral lappets on segments 1, 2 and 3 ........................... Pistella papillosa ( Tourtellotte & Kritzler, 1988) comb. nov.

- Lateral lappets combined on segments 2/3 ....................................................( Lanicola Hartmann-Schröder, 1986 ) 21

21. Thoracic dorsum smooth ......................................................................................... L. carus ( Young & Kritzler, 1987)

- Anteior thoracic dorsum with many tubercles ............................................... L. garciagomezi ( Londoño-Mesa, 2006)

22. Lateral lappets absent............................................................................................. Scionides reticulata ( Ehlers, 1887)

- Lateral lappets present .............................................................................................................................................. 23

23. Lateral lappets short, on segments 2, 3 and 4; uncini with teeth in two or more transverse rows ................................. ..................................................................................................................................... ( Eupolymnia Verrill, 1900 )...24

- Lateral lappets long, on segments 1 and 3; uncini with teeth in single vertical row ....... ( Loimia Malmgren, 1966 ) 27

24. First five thoracic neuropodia with uncini in single rows ................................................................. E. rullieri sp. nov.

- First six thoracic neuropodia with uncini in single rows ........................................................................................... 25

25. Lateral lappets equal-sized ......................................................................................................................................... 26

- Lateral lappets from segment 3 considerably longer ................................................. Eupolymnia sp. A Kritzler, 1984

26. 17 thoracic chaetigers … ................................................................................................. E. magnifica ( Webster, 1884)

- 25 thoracic chaetigers … .......................................................................................... E. crassicornis ( Schmarda, 1861)

27. Uncini on neuropodia 1–3 with long posterior process ........................ L. salazari Londoño-Mesa & Carrera-Parra, 2005

- All uncini without posterior process .......................................................................................................................... 28

28. Uncini with teeth gradually decreasing in size; thoracic uncini with 5 teeth in single vertical series; abdominal uncini with 6 teeth ........................................................................................................................... L. minuta Treadwell, 1929

- Both thoracic and abdominal uncini with teeth equal-sized ...................................................................................... 29

29. Thoracic and abdominal uncini with 5 teeth in single vertical series .............................. L. bermudensis Verrill, 1900

- Thoracic and abdominal uncini with 7 teeth in single vertical series ......................................... L. viridis Moore, 1903

30. Lateral lappets present ............................................................................................................................................... 31

- Lateral lappets absent ................................................................................................................................................. 32

31. Lateral lappets on segments 1–3 .................................................................................. Pista sombreriana McIntosh, 1885

- Lateral lappets on segments 2–3 ....................................................................................................................... Proclea sp. 1

32. Neuropodia from segment 5........................................................................................................................................ 33

- Neuropodia from segment 10 ................................................................................................... Genus B Kritzler, 1984

33. Notochaetae “Spinosphaera-type” ...............................................................................( Spinosphaera Hessle, 1917 ) 34

- Notochaetae subdistally smooth with serrated tip ............................................................ Lanassa sp. A Kritzler, 1984

34. With 20–23 notopodia; first seven notopodia with bilimbate chaetae equal-sized; thoracic uncini with dental formula MF:6–7:6–7:11–12:11–12; abdominal uncini with dental formula MF:4–6:5–6:7–8 ......................................................... ..................................................................................................................................... S. hutchingsae Londoño-Mesa, 2003

- With 15 notopodia; first six notopodia with bilimbate chaetae of two lengths; thoracic and abdominal uncini with dental formula MF:3:3–4:6–7 ................................................................................................ S. carrerai Londoño-Mesa, 2003

35. With branchiae ........................................................................................................... ( Thelepodinae Hessle, 1917 ) 36

- Without branchiae ................................................................................................... ( Polycirrinae Malmgren, 1866 ) 48 36. Tentacular membrane smooth; one type of tentacle ................................................................................................... 37

- Tentacular membrane with two transverse lobes on dorsal surface; two types of tentacles .......................................... ......................................................................................................................... Kritzlerius anomalus gen. nov., sp. nov.

37. Notopodia from segment 2 ............................................................................................... ( Streblosoma Sars, 1872 ) 38

- Notopodia from segment 3 ......................................................................................................................................... 40

38. Three pairs of branchiae ............................................................................................................................................ 39

- Five pairs of branchiae ..................................................................................................... S. polybranchia Verrill, 1900

39. First pair of branchiae arises anteriorly to notopodia; eyespots around all tentacular membrane.................................. ........................................................................................................................................... S. hartmanae Kritzler, 1971

- First pair of branchiae arsises dorsally to notopodia; eyespots in two lateral distinct groups on tentacular membrane ......................................................................................................................................................... S. tenhovei sp. nov.

40. Lateral lappets present ...................................................................................................... Euthelepus kritzleri sp. nov.

- Lateral lappets absent ................................................................................................................................................ 41

41. Thoracic uncini absent ........................................................... Telothelepus cf. capensis Day, 1955 fide Kritzler, 1984

- Thoracic uncini present .............................................................................................................................................. 42

42. Neuropodia from segment 5 ............................................................................................( Thelepus Leuckart, 1849 ) 43

- Neuropodia from segment 8 .................................................................................... Rhinothelepus sp. A Kritzler, 1984

43. Two pairs of branchiae ............................................................................................................................................... 44

- Three pairs of branchiae ............................................................................................................................................. 46

44. Each branchia as single filament ................................................................................................................................ 45

- Branchiae with 2–4 filaments ............................................................................ T. crassibranchiatus Treadwell, 1901

45. Notochaetae lanceolate, distally bilimbate ............................................................. T. tenuis ( Verrill, 1900) comb. nov.

- Notochaetae paleate ........................................................................................................... T. pascua (Fauchald, 1977)

46. Branchiae with 2–4 filaments .................................................................................................................................... 47

- Branchiae with 20–32 filaments .............................................................................................. T. haitiensis Treadwell, 1931

47. Uncini MF:2:0–1 ...................................................................................................... T. verrilli ( Treadwell, 1911) comb. nov.

- Uncini MF:2:3 .......................................................................................................................................... Thelepus sp. 1

48. Without any chaetae ..................................................................................................... Hauchiella sp. A Kritzler, 1984

- With at least one kind of chaetae ............................................................................................................................... 49

49. Neurochaetae absent ................................................................................................................................................. 50

- Neurochaetae present ................................................................................................................................................. 54

50. Thoracic notopodia furcate or branched ................................................... Enoplobranchus sanguineus ( Verrill, 1873)

- Thoracic notopodia not branched .............................................................................................................................. 51

51. Only thoracic notochaetae ................................................................................................. Lysilla Malmgren, 1866 ...52

- Thoracic notochaeta and abdominal neurochaetae ................................................................................. Amaeana sp. 1

52. Lobules of tentacular membrane divided into 3 digitate projections ......................................................................... 53

- Lobules of the tentacular membrane folded and free, but not divided ............................... Lysilla sp. B Kritzler, 1984

53. With 10 pairs of notopodia; capillary chaetae smooth.................................................................. Lysilla caribe sp. nov.

- With 13 pairs of notopodia; capillary chaetae hispid .......................................................... Lysilla sp. A Kritzler, 1984

54. Notochaetae absent .................................................................................... Biremis blandi Polloni, Rowe & Teal, 1973

- Notochaetae present ......................................................................................................... ( Polycirrus Grube, 1850 ) 55

55. One type of notochaetae (smooth, hirsute or pinnate) ................................................................................................ 56

- Two types of notochaetae (smooth and pinnate) ........................................................................................................ 62

56. Hirsute or smooth notochaetae.................................................................................................................................... 57

- Pinnate notochaetae ................................................................................................................................................... 61

57. Smooth notochaetae ................................................................................................................................................... 58

- Hirsute notochaetae .................................................................................................................................................... 59

58. Twenty-three pairs of notopodia; uncini from segment 16 … P. cf. haematodes (Claparède, 1864) fide Kritzler, 1984

- Nineteen pairs of notopodia; uncini from segment 13 … P. cf. denticulatus de Saint-Joseph, 1894 fide Kritzler, 1984

59. Ten pairs of notopodia; uncini from segment 10 ............................................................. P. purpureus Schmarda, 1861

- Seventeen pairs of notopodia ...................................................................................................................................... 60

60. Uncini from segment 17 ................................................................. P. cf. albicans Malmgren, 1866 fide Kritzler, 1984

- Uncini from segment 18 ................................................................................................ Polycirrus sp. B Kritzler, 1984

61. Twenty pairs of notopodia; uncini from segment 21 ......................................................... P. pennulifera Verrill, 1900

- Twelve pairs of notopodia; uncini from segment 5 ........................... P. holthei Londoño-Mesa & Carrera-Parra, 2005

62. Thirty-one pairs of notopodia; uncini from segment 7 ....................................................................... P. angeli sp. nov.

- Seventy-two pairs of notopodia ................................................................................... Polycirrus sp. A Kritzler, 1984