Ampithoe, Leach, 1814

Peart, Rachael A., 2007, A review of the Australian species of Ampithoe Leach, 1814 (Crustacea: Amphipoda: Ampithoidae) with descriptions of seventeen new species, Zootaxa 1566 (1), pp. 1-95 : 6-7

Key to males of Australian Ampithoe

1 Uropod 1 distoventral spur present, rounded and reduced in male and absent in female; pereopods 5–7 prehensile; telsonic cusps large ( Fig. 49 ) .................................................................................................. 17

- Uropod 1 distoventral spur absent on both male and female; pereopods 5–7 simple; telsonic cusps small or absent ( Fig. 65 ) ............................................................................................................................................ 2

2 Gnathopod 1 palm excavate ( Fig. 52 ).......................................................................................................... 3

- Gnathopod 1 palm straight or convex ( Fig. 60 )........................................................................................... 7

3 Gnathopod 2 palm without midmedial tooth ( Fig. 52 ) ................................................................................ 4

- Gnathopod 2 palm with midmedial tooth ( Fig. 20 ) ..................................................................................... 6

4 Gnathopod 1 palm with midmedial tooth ( Fig. 52 ) ..................................................................................... 5

- Gnathopod 1 palm without midmedial tooth ( Fig. 41 ) ................................ A. ngana Poore & Lowry, 1997

5 Uropod 3 peduncle without marginal robust setae ( Fig. 53 ) ........................................ A. peronana sp. nov.

- Uropod 3 peduncle with marginal robust setae ( Fig. 13 ) ............................................... A. eremitis sp. nov.

6 Gnathopod 2 palm excavate ( Fig. 20 ) ................................................................................. A. hiana sp. nov.

- Gnathopod 2 palm entire ( Fig. 56 ) ......................................................................... A. pseudongana sp. nov.

7 Gnathopod 2 propodus subrectangular ( Fig. 6 ) ........................................................................................... 8

- Gnathopod 2 propodus ovoid, subtriangular or rounded ( Fig. 64 ) ............................................................ 10

8 Gnathopod 2 palm midmedial tooth absent ( Fig. 6 ) ..................................... A. caddi Poore & Lowry, 1997

- Gnathopod 2 palm midmedial tooth present ( Fig. 60 )................................................................................. 9

9 Gnathopod 2 propodus produced anterodistally to form a setose lobe ( Fig. 60 ) ....... Ampithoe roly sp. nov.

- Gnathopod 2 propodus not produced to form a lobe ( Fig. 24 ) .......................................... A. hyalos sp. nov.

10 Gnathopod 2 palm with midmedial tooth ( Fig. 64 ) ................................................................................... 11

- Gnathopod 2 palm without midmedial tooth ( Fig. 28 ) .............................................................................. 14

11 Gnathopod 1 carpal lobe subacute ( Fig. 64 ) .............................................................................................. 12

- Gnathopod 1 carpal lobe rounded ( Fig. 38 )............................................................................................... 13

12 Gnathopod 2 dactylus shorter than palm ( Fig. 64 ) .......................................................... A. rosema sp. nov.

- Gnathopod 2 dactylus overeaching the palm ( Fig. 16 ) ............................................... A. geographe sp. nov.

13 Pereopod 6 basis with marginal robust setae ( Fig. 39 ) ............................................... A. merimbula sp. nov.

- Pereopod 6 basis without marginal robust setae ( Fig. 4 ) .................................................. A. boiana sp. nov.

14 Gnathopod 2 without densely setose margins ( Fig. 28 )............................................................................. 15

- Gnathopod 2 with long non-plumose setae on margins ( Fig. 72 ).............................................................. 16

15 Gnathopod 2 basis posterodistal lobe with robust setae on the margin ( Fig. 28 ) .... Ampithoe katae sp. nov.

- Gnathopod 2 basis posterodistal lobe with slender setae on the margin ( Fig. 9 ) Ampithoe cookana sp. nov.

16 Gnathopod 1 palm with midmedial tooth ( Fig. 72 ) ....................................................... A. ulladulla sp. nov.

- Gnathopod 1 palm without midmedial tooth ( Fig. 44 ) .................................................. A. ningaloo sp. nov. 17 Gnathopod 2 propodal palm incised ( Fig. 31 ) ........................................................................................... 18

- Gnathopod 2 propodal palm entire ( Fig. 68 ) ............................................................................................. 19

18 Antenna 2 poorly setose ( Fig. 31 ) ................................................................................. A. kava Myers, 1985

- Antenna 2 with short dense setae on the margins ( Fig. 47 ) .......................................... A. parakava sp. nov.

19 Gnathopod 2 basis lobe with 3 marginal slender setae ( Fig. 68 ) ..................................... A. rotunda sp. nov.

- Gnathopod 2 basis lobe with 3 marginal robust setae ( Fig. 34 ) .................................... A. meganae sp. nov.

Figures

FIGURE 4. Ampithoe boiana sp. nov., holotype, male, AM P61828, 5 mm. Bay of Islands, Victoria, Australia. Scales represent 0.5 mm for pereopods 3–5 and 0.2 mm for uropods 1–3 and telson. Pereopod 5 distal articles twisted, pereopods 6–7 missing.

FIGURE 6. Ampithoe caddi Poore & Lowry, 1997, holotype, female, 12.9 mm, AM P45054, paratype, male, 10.6 mm, AM P45055, Shark Bay, Port Jackson, New South Wales, Australia. Scales for antennae, mouthparts, U3 and T represent 0.2 mm, the rest represent 0.5 mm.

FIGURE 9. Ampithoe cookana sp. nov., holotype, male, AM P61832, 6 mm. Paratype, female, AM P61833, 8 mm. Cook Island, New South Wales, Australia. Scales represent 0.5 mm.

FIGURE 13. Ampithoe eremitis sp. nov., holotype, female, 11.0 mm, AM P51251, male, 10.5 mm, AM P51252, Split Solitary Island, Coffs Harbour, New South Wales, Australia.

FIGURE 16. Ampithoe geographe sp. nov., holotype, male, WAM C 38532, 6 mm. Paratype, female, WAM C 38533, 7 mm. Canal Rocks, south of Yallingup, Western Australia, Australia. Scales represent 0.5 mm.

FIGURE 20. Ampithoe hiana sp. nov., holotype, male, AM P61836, 5 mm. Paratype, female, AM P61837, 6 mm. Heron Island, Queensland, Australia. Scales represent 0.5 mm.

FIGURE 24. Ampithoe hyalos sp. nov., holotype, male, AM P61840, 8 mm. Paratype, female, AM P61841, 11 mm. Bottle and Glass Rocks, Port Jackson, New South Wales, Australia. Scales represent 0.5 mm.

FIGURE 28. Ampithoe katae sp. nov., holotype, male, AM P61842, 5 mm. Paratype, female, AM P61843, 6 mm. Lizard Island, Queensland, Australia. Scales represent 0.2 mm for male and 0.5 mm for female.

FIGURE 31. Ampithoe kava Myers, 1985, female, 9.4 mm, AM P45057, male, 7.8 mm, AM P45058, Shark Bay, Port Jackson, New South Wales, Australia. Scales for U3 and T represent 0.1 mm, and for the rest 0.2 mm.

FIGURE 34. Ampithoe meganae sp. nov., holotype, male, AM P61854, 2 mm. Paratype, female, AM P61855, 3 mm. Lizard Island, Queensland, Australia. Scales represent 0.2 mm.

FIGURE 38. Ampithoe merimbula sp. nov., holotype, male, AM P61858, 7 mm. Paratype, female, AM P61859, 7 mm. Merimbula Wharf, Merimbula, New South Wales, Australia. Scales represent 0.5 mm.

FIGURE 39. Ampithoe merimbula sp. nov., holotype, male, AM P61858, 7 mm. Merimbula Wharf, Merimbula, New South Wales, Australia. Scales represent 0.5 mm for pereopods 3–7 and 0.2 mm for uropods 1–3 and telson.

FIGURE 41. Ampithoe ngana Poore & Lowry, 1997, holotype, female, 9.2 mm, AM P45061; paratype, male, 13.3 mm, AM P45062, Shark Bay, Port Jackson, New South Wales, Australia. Scales for A1–2 and gnathopods and pereopods represent 0.5 mm; scales for mouthparts and U3 and T represent 0.2 mm.

FIGURE 44. Ampithoe ningaloo sp. nov., holotype, male, WAM C38534, 4 mm. Paratype, female, WAM C 38535, 6 mm. Ningaloo Reef, off Neds Camp, Cape Range National Park, Western Australia, Australia. Scales represent 0.5 mm.

FIGURE 47. Ampithoe parakava sp. nov., holotype, male, WAM C38536, 4 mm. Paratype, female, WAM C 38537, 5 mm. South of Nelson Rocks, Dampier Archipelago, Western Australia, Australia. Scales represent 0.5 mm for antennae 1–2 and 0.2 mm for mouthparts. Female antenna 2 is missing.

FIGURE 49. Ampithoe parakava sp. nov., holotype, male, WAM C38536, 4 mm. South of Nelson Rocks, Dampier Archipelago, Western Australia, Australia. Scales represent 0.2 mm.

FIGURE 52. Ampithoe peronana sp. nov., holotype, male, WAM C38538, 7 mm. Paratype, female, WAM C 38539, 9 mm. 2 km south of Cape Peron, Western Australia, Australia.Scales represent 0.5 mm.

FIGURE 53. Ampithoe peronana sp. nov., holotype, male, WAM C38538, 7 mm. Paratype, female, WAM C 38539, 9 mm. 2 km south of Cape Peron, Western Australia, Australia. Scales represent 0.5 mm for pereopods 3–7 and 0.2 mm for uropods 1–3 and telson. Pereopod 4 identical to pereopod 3.

FIGURE 56. Ampithoe pseudongana sp. nov., holotype, male, WAM C38540, 9 mm. Paratype, female, WAM C 38541, 10 mm. Bussleton, Western Australia, Australia. Scales represent 0.5 mm.

FIGURE 60. Ampithoe roly sp. nov., holotype, male, WAM C 38542, 5 mm. Paratype, female, WAM C 38543, 5 mm. Dampier Archipelago, Western Australia, Australia.Scales represent 0.5 mm.

FIGURE 64. Ampithoe rosema sp. nov., holotype, male, WAM C38544, 6 mm. Paratype, female, WAM C 38545, 7 mm. Tish Point, Rosemary Island, Dampier Archipelago, Western Australia, Australia. Scales represent 0.5 mm for male and 0.2 mm for female.

FIGURE 65. Ampithoe rosema sp. nov., holotype, male, WAM C38544, 6 mm. Tish Point, Rosemary Island, Dampier Archipelago, Western Australia, Australia. Scales represent 0.5 mm for pereopods 3–5 and 0.2 mm for uropods 1–3 and telson. Pereopods 6–7 missing.

FIGURE 68. Ampithoe rotunda sp. nov., holotype, male, AM P61894, 2 mm. Paratype, female, AM P61895, 4 mm. Heron Island, Queensland, Australia. Scales represent 0.2 mm.

FIGURE 72. Ampithoe ulladulla sp. nov., holotype, male, AM P61898, 8 mm. Paratype, female, AM P61899, 8 mm. Ulladulla, New South Wales, Australia. Scales represent 0.5 mm.