Ampithoe Leach 1814
Creators: name: Alves, Jessika
name: Neves, Elizabeth G.
name: Johnsson, Rodrigo
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ampithoidae
Ampithoe

description: Taxonomic key to Ampithoe species of the word
1. Antenna 2 peduncle article 4 posterodistal corner acutely produced …........................... ........................................................................................................... A. vacoregue J.L. Barnard, 1979
Antenna 2 peduncle article 4 posterodistal corner not produced …...................................... 2
2. Antenna 2 peduncle articles 4 and 5 with medial cone-teeth ................................................ .................................................................................................................... A. tahue J.L. Barnard, 1979
- Antenna 2 peduncle article 4 and 5 without medial cone-teeth ..................................... 3
3. Pereopods 5–7 propodus distoventral corner expanded, prehensile looking .................. ............................................................................................... A. pomboi Mateus and Mateus, 1974
- Pereopods 5–7 propodus distoventral corner not expanded, not prehensile looking.............................................................................................................................................. 4
4. Gnathopod 1 basis shorter than coxa 1 ..................................................................................... 5
- Gnathopod 1 basis longer than coxa 1 ...................................................................................... 7
5. Mandibular palp article 3 with simple distal setae ....................................................................... ....................................................................................... A. hirsutimanus Ortiz and Lemaitre, 1997
- Mandibular palp article 3 with simple plumose setae ......................................................... 6
6. Telson distal margin convex ................................................................ A. rachanoi Peart, 2002
- Telson distal margin straight ................................... ................................... A.katae Peart, 2007
7. Gnathopod 2 basis subequal to or shorter than coxa 2 ...................................................... 8
- Gnathopod 2 basis longer than coxa 2 ...................................................................................... 9
8. Gnathopod 2 basis shorter than coxa 2, propodus palm acute with V-shaped excavation ................................................................................................................ A. atauro Hughes, 2015
- Gnathopod 2 basis subequal to coxa 2, propodus palm transverse, without excavation ........................................... ........................................... A. merimbula Peart, 2007
9. Male gnathopod 2 subequal in size to gnathopod 1 ......................................................... 10
- Male gnathopod 2 bigger than gnathopod 1 ........................................................................ 11
10. Male gnathopod 1 propodus palm subtransverse ... ... A. megaloprotopus Stebbing, 1895
- Male gnathopod 1 propodus palm acute .......... A. waratah (Hughes and Peart, 2015)
11. Male gnathopod 2 propodus palm with distal acute slit .................................................. 12
- Male gnathopod 2 propodus palm with subacute slit or without slit ......................... 13
12. Telson distal margin subtriangular and acutely projected. Epimeral plates posteroventral corners upturned ...................................................... A. akuolaka J.L. Barnard, 1970
- Telson distal margin slightly concave or convex, never acutely produced. Epimeral plates posteroventral corners rounded, continuous with posterior margin ...................... ............................................................................................................................... A. kuala Myers, 1985
13. Pereopod 3 basis anterior margin distally pronounced ..................................................... ....................................................................................................... A. riedli Krapp-Schickel, 1968
- Pereopod 3 basis anterior margin not pronounced ............................................................ 14
14. Male gnathopod 2 propodus palm transverse to slightly obtuse ................................. 15
- Male gnathopod 2 propodus palm acute to subtransverse ............................................. 36
15. Male gnathopod 2 without spines or setae defining palmar corner.. ........................ 16
- Male gnathopod 2 with spine and/or setae defining palmar corner ........................... 28
16. Antenna 1 shorter than antenna 2 ............................................................................................. 17
- Antenna 1 longer than antenna 2 .............................................................................................. 18
17. Male gnathopod 2 propodus palm undulated, dactylus as long as palm .......................... ............................................................................................................ A. koreana Kim and Kim, 1988
- Male gnathopod 2 propodus palm with distal narrow U-shaped excavation, dactylus longer than palm .................................................................................. A. ferox (Chevreux, 1901)
18. Male gnathopod 2 subrectangular 1.6 times longer than wide.. ................................. 19
- Male gnathopod 2 subquadrate, as long as wide ................................................................ 26
19. Male gnathopod 2 propodus palm smooth ........................................................................... 20
- Male gnathopod 2 propodus palm ornamented .................................................................. 21
20. Antenna 2 strongly setose, with plumose setae .................... A. zachsi Gurjanova, 1938
- Antenna 2 setose with simple setae ... ... A. mascarenensis Appadoo and Myers, 2004
21. Male gnathopod 2 propodus palm with one subquadrate process occupying more than 50% of the palmar margin .......... .......... A. changbaensis Shin and Coleman, 2021
- Male gnathopod 2 propodus palm with small ornamentations occupying less than 30% of propodus length ................................................................................................................ 22
22. Male gnathopod 2 propodus palm sinuous ........................................................................... 23
- Male gnathopod 2 propodus palm not sinuous.. ............................................................... 25
23. Mandibular palp article 3 shorter than article .............. A. plumulosa Shoemaker, 1938
- Mandibular palp article 3 as long as article 2 ........................................................................ 24
24. Epimeral plates posteroventral corners acute and projected .... .... A. lacertosa Bate, 1858
- Epimeral plates posteroventral corners rounded and not projected.. .............................. ............................................................................................................................... A. valida Smith, 1873
25. Male gnathopod 2 propodus palm with medial tooth ............................................................... .......................................................................................... A. laxipodus Appadoo and Myers, 2004
- Male gnathopod 2 propodus palm with broadly rounded process ...................................... ..................................................................................................................... A. tarasovi Bulyčeva, 1952
26. Male gnathopod 2 propodus palm concave .......................................................................... 27
- Male gnathopod 2 propodus palm straight or convex ...................................................... 28
27. Male gnathopod 2 basis facial margin with row of plumose setae ............................. ............................................................................................................................ A. roly Peart, 2007
- Male gnathopod 2 basis facial margin naked .......... A. brevipalma Kim and Kim, 1988
28. Male gnathopod 1 propodus palm with rounded excavation ........................................ 29
- Male gnathopod 1 propodus palm without rounded excavation ................................. 31
29. Male gnathopod 1 palmar corner without stout seta ............................................................ ................................................................................................. A. ngana Poore and Lowry, 1997
- Male gnathopod 1 palmar corner with stout seta ............................................................... 30
30. Male gnathopod 1 palmar corner rounded ................. ................. A. ulladulla Peart, 2007
- Male gnathopod 1 palmar corner acute ................................ A. pseudongana Peart, 2007
31. Male gnathopod 1 propodus narrow (more than twice longer than wide), palm extremely acute .................................................................................................................................. 32
- Male gnathopod 1 propodus subrectangular (less than twice longer than wide), palm acute ........................................................................................................................................................ 33
32. Male gnathopod 2 propodus palm straight, dactylus more than 1/3 longer than propodus palm ...................................................................................... A. merimbula Peart, 2007
- Male gnathopod 2 propodus palm excavated, dactylus slightly longer than propodus palm .................................................... .................................................... Ampithoe roly, Peart, 2007
33. Male gnathopod 1 carpus longer than propodus A. prolata Hughes and Peart, 2013
- Male gnathopod 1 carpus shorter than propodus ............................................................... 34
34. Male gnathopod 1 without carpal lobe... Ampithoe lafkui Appadoo and Myers, 2004
- Male gnathopod 1 with carpal lobe ........................................................................................... 35
35. Male gnathopod 1 with acute carpal lobe .................................. A. geographe Peart 2007
- Male gnathopod 1 with rounded carpal lobe .................................. A. boiana Peart, 2007
36. Male gnathopod 2 propodus palm extremely acute .......................................................... 37
- Male gnathopod 2 propodus palm acute or subtransverse ............................................. 38
37. Antenna 1 clearly shorter than antenna 2 .......... A. youngsanensis Kim and Kim, 1988
- Antenna 1 subequal in length to antenna 2 ........................ A. aptos (J.L. Barnard, 1969)
38. Uropod 1 with rounded interramal process .............................................................................. ................................................................................. A. longicarpus Appadoo and Myers, 2004
- Uropod 1 without interramal process ....................................................................................... 39
39. Male gnathopod 1 with distal acute slit ........... ........... A. platycera Sivaprakasam, 1970
- Male gnathopod 1 without distal acute slit ............................................................................ 40
40. Male gnathopod 1 propodus palm with excavation ................................................................... .................................................................................................. A. nobrei Mateus and Mateus, 1986
- Male gnathopod 1 propodus palm without excavation .................................................... 41
41. Antenna 1 shorter than antenna 2 ............................................................................................. 42
- Antenna 1 subequal or longer than antenna 2 ..................................................................... 44
42. Head distoventral margin straight near hinge of antenna 2 .................................................... ...................................................................................................... A. rubricatoides Shoemaker, 1938
- Head distoventral margin curved near hinge of antenna 2 ............................................. 43
43. Mandibular palp article 3 distally broad, subquadrate. Gnathopod 2 with short spine defining palm ............................................ ............................................ A. dalli Shoemaker, 1938
- Mandibular palp article 3 distally narrow, subtriangular. Gnathopod 1 with long and curved spine defining palm .......................................................... A. simulans Aldeman, 1936
44. Antenna 1 subequal to antenna 2 .......................................... A. kussakini Gurjanova, 1955
- Antenna 1 longer than antenna 2 .............................................................................................. 45
45. Male gnathopod 2 propodus palmar corner projected ..................................................... 46
- Male gnathopod 2 propodus palmar corner not projected ............................................. 70
46. Male gnathopod 2 palmar corner slightly produced .......................................................... 47
- Male gnathopod 2 palmar corner well produced ................................................................ 56
47. Male gnathopod 1 merus anteroventral corner bifid .................................................................. ............................................................................................ A. ricaudyana Peart and Hughes, 2014
- Male gnathopod 1 merus anteroventral corner entire ....................................................... 48
48. Male gnathopod 1 propodus palm subtransverse ............................................................... 49
- Male ganthopod 1 propodus palm acute ................................................................................ 52
49. Antenna 2 covered by plumose setae ......... ......... A. seticoxae Serejo and Licinio, 2002
- Antenna 2 with simple setae ........................................................................................................ 50
50. Male gnathopod 1 propodus palm with subquadrate tooth near hinge of dactylus .... ..................................................................................... A. robustimana Andrade and Senna, 2017
- Male gnathopod 1 propodus palm without tooth .............................................................. 51
51. Male gnathopod 2 dactylus longer than propodus palm ......................................................... ......................................................................................................... A. caddi Poore and Lowry, 1997
- Male gnathopod 2 dactylus shorter than or as long as propodus palm ............................. .................................................................................................................................. A. marcuzzii Ruffo, 1954
52. Male gnathopod 1 propodus palm acute ................................................................................ 53
- Male gnathopod 1 propodus palm extremely acute .......................................................... 55
53. Male gnathopod 1 with V-shaped excavation .................. A. waialua J.L. Barnard, 1970
- Male gnathopod 1 without excavation .................................................................................... 54
54. Male gnathopod 1 propodus palm short, reaching 50% of dactylus length ..................... ................................................................................................... A. serraticauda Rabindranath, 1972
- Male gnathopod 1 propodus palm long, reaching more than 70% of dactylus length ............................................................................................................... A. rubricata (Montagu, 1808)
55. Male gnathopod 1 carpus long, reaching 90% of propodus length. Carpus posteroventral corner acute, posterior margin straight .......... A. guaspare J.L. Barnard, 1979
- Male gnathopod 1 carpus subtriangular, reaching 60% of propodus length. Carpus posterior margin rounded and narrow, posteroventral corner rounded and produced ......................................................................................................................... A. peronana Peart, 2007
56. Male gnathopod 1 and 2 propodus palm similar in shape ....................................................... ............................................................................................................... A. hinatore J.L. Barnard, 1972
- Male gnathopod 1 and 2 propodus palm dissimilar ........................................................... 57
57. Male gnathopod 2 propodus globose in shape, as long as wide .......................................... ................................................................................................ A. mantissa Hughes and Peart, 2013
- Male gnathopod 2 propodus longer than wide ................................................................... 58
58. Male gnathopod 2 palm with truncated disform excavation .................................................. ................................................................................................ A. takeuchii Peart and Hughes, 2014
- Male gnathopod 2 palm with well-defined U-shaped or V-shaped excavation ...... 59
59. Male gnathopod 2 palm with U-shaped excavation near palmar corner ................... 60
- Male gnathopod 2 palm with V-shaped excavation near palmar corner ................... 67
60. Male Gnathopod 1 propodus palm short until 50% of dactylus length ..................... 61
- Male Gnathopod 1 propodus palm not short, reaching more than 50% of dactylus length ..................................................................................................................................................... 65
61. Male gnathopod 1 merus bifid ............................ A. bizseli Özaydinli and Coleman, 2012
- Male gnathopod 1 merus entire .................................................................................................. 62
62. Male gnathopod 2 carpus posteroventral corner subconical forming a distinct lobe .. ............................................................................................................................. A. rosema Peart, 2007
- Male gnathopod 2 carpus posteroventral corner without lobe ..................................... 63
63. Male gnathopod 1 propodus with plumose setae ....................................................................... .......................................................................... Ampithoe dentimana Mateus and Mateus, 1986
- Male gnathopod 1 propodus without plumose setae ........................................................ 64
64. Mandibular palp thin and reduced ............................................................ A. olokumae sp. n.
- Mandibular palp well developed..................................................... A. hughesae Myers, 2014
65. Male gnathopod 1 propodus palmar corner projected .. .. A. ramondi Audouin, 1826
- Male gnathopod 1 propodus palmar corner not projected ............................................. 66
66. Male and female gnathopod 2 merus produced to form an acute distoventral projection ......................................................... ......................................................... A. eremitis Peart, 2007
- Male and female gnathopod 2 merus without distoventral projection .............................. ............................................................................ Ampithoe fastidiosa Mateus and Mateus, 1991
67. Male gnathopod 2 V-shaped excavation deep, reaching more than 60% of propodus length ........................................................................ A. sectimana Conlan and Bousfield, 1982
- Male gnathopod 2 V-shaped excavation depth shallow to moderate, reaching less than 50% of propodus length ...................................................................................................... 68
68. Male gnathopod 2 palm very oblique ................................................ A. pollex Kunkel, 1910
- Male gnathopod 2 palm acute ..................................................................................................... 69
69. Male gnathopod 2 propopus palm corner with acute projection ......................................... ........................................................................................................................ A. volki Gurjanova, 1938
- Male gnathopod 2 propodus palm corner with rounded finger-like projection ............. ........................................................................................................................... A. cookana Peart, 2007
70. Male gnathopod 1 carpus as long as propodus .................... A. longimana Smith, 1873
- Male gnathopod 1 carpus shorter than propodus ............................................................... 71
71. Antenna 1 shorter than antenna 2 .................................. A. macrocornuta (Kensley, 1971)
- Antenna 1 equal in size to or longer than antenna 2 ........................................................ 72
72. Antenna 1 equal in size to antenna 2 ................................ A. africana K.H. Barnard, 1926
- Antenna 1 longer than antenna 2 .............................................................................................. 73
73. Male gnathopod 2 palmar corner acute .............. .............. A. djakonovi Gurjanova, 1938
- Male gnathopod 2 palmar corner rounded ............................................................................ 74
74. Male gnathopod 2 propodus palm convex ........................ A. kergueleni Stebbing, 1888
- Male gnathopod 2 propodus palm concave or straight .................................................... 75
75. Mandibular palp well developed, longer than mandibule ............................................... 76
- Mandibular palp thin and poorly developed, shorter than mandibule ....................... 78
76. Male gnathopod 2 with a rounded process defining palm .... .... A. hyalos Peart, 2007
- Male gnathopod 2 without process defining palm ............................................................. 77
77. Male gnathopod 2 propodus palm as long as dactylus ............................................................. ................................................................................................... A. Ampithoe grubiformis Reid, 1951
- Male gnathopod 2 propodus palm shorter than dactylus ........................................................ .................................................................................... Ampithoe senegalensis Schellenberg, 1925
78. Male gnathopod 2 propodus palm concave, dactylus inner margin smooth ................... ................................................................................................................... A. alluaudi Chevreux, 1901
- Male gnathopod 2 propodus palm straight to convex, dactylus inner margin serrated ............................................................................................. A. thaix Siqueira and Iwasa-Arai, 2021
description: Published as part of Alves, Jessika, Neves, Elizabeth G. & Johnsson, Rodrigo, 2023, New species of Ampithoe Leach, 1814 from Todos-os-Santos Bay, Bahia State, Brazil, pp. 2006-2027 in Journal of Natural History 57 on pages 2018-2024, DOI: 10.1080/00222933.2023.2281030, http://zenodo.org/record/10479634