Southern rock lobster or crayfish Jasus edwardsii, copyright Stemonitis.

Belongs within: Reptantia.
Contains: Stridentes.

The Achelata, spiny and slipper lobsters, are a group of marine decapods characterised by the lack of chelae on most pereiopods.

Synapomorphies (from Dixon et al. 2003): Eyestalks with row of hairs alongside eye; second antenna greatly enlarged, basal articles of second antennae fused with epistome; pereiopods (except fifth) achelate. Carapace held to body by knob emanating from last thoracic somite; lineae absent; pleon with prominent hinges; pleurites pointed; tail fan soft distally; telson with fixed lateral spines. Phyllosoma larva present.

<==Achelata [Palinuroidea]
    |--Palinuridae DAS03
    |    |  i. s.: Palinustus G05b
    |    |         Palibythus G05b
    |    |--Stridentes G05b
    |    `--Silentes G05b
    |         |--Palinurellus [Synaxidae] G05b
    |         |    `--P. gundlachi von Martens 1878 DAS03
    |         |--Sagmariasus G05b
    |         |    |--S. flemingi G05b
    |         |    `--S. verreauxii G05b
    |         |--Projasus G05b
    |         |    |--P. bahamondei G05b
    |         |    `--P. parkeri G05b
    |         `--Jasus G05b
    |              |--J. edwardsii (Hutton 1875) H86
    |              |--J. frontalis G05b
    |              |--J. lalandei (Milne Edwards 1837) H86
    |              |--J. novaehollandiae G05b
    |              |--J. paulensis L95
    |              |--J. tristani G05b
    |              `--J. verreauxi MC05
    `--Scyllaridae DAS03
         |--Thenus [Theninae] BW05
         |    `--T. orientalis (Lund 1793) DAS03
         |--Arctidinae BW05
         |    |--Arctides guineensis BW05
         |    `--Scyllarides BW05
         |         |--S. aequinoctialis BW05
         |         |--S. astori BW05
         |         |--S. herklotsii BW05
         |         |--S. latus (Latreille 1803) KK03
         |         |--S. nodifer BW05
         |         `--S. squammosus BW05
         |--Ibacinae BW05
         |    |--Evibacus Smith 1869 BW05, B55
         |    |    `--E. princeps Smith 1869 [=Evibaccus (l. c.) princeps] B55
         |    |--Parribacus BW05
         |    |    |--P. antarcticus (Lund 1793) TSH09
         |    |    |--P. caledonicus BW05
         |    |    `--P. scarlatinus BW05
         |    `--Ibacus BW05
         |         |--I. alticrenatus Bate 1888 MG-H11
         |         |--I. chacei BW05
         |         |--I. ciliatus BW05
         |         |--I. novemdentatus BW05
         |         `--I. peronii Leach 1815 MG-H11
         `--Scyllarinae BW05
              |--Acantharctus BW05
              |--Antarctus BW05
              |--Antipodarctus aoteanus [=Scyllarus aoteanus] BW05
              |--Bathyarctus BW05
              |--Biarctus sordidus BW05
              |--Chelarctus cultrifer [=Scyllarus cultrifer] BW05
              |--Gibbularctus BW05
              |--Remiarctus bertholdii (Paulson 1875) BW05, MG-H11
              |--Scammarctus batei BW05
              |--Crenarctus BW05
              |    |--C. bicuspidatus [=Scyllarus bicuspidatus] BW05
              |    `--C. crenatus (Whitelegge 1900) MG-H11
              |--Eduarctus BW05
              |    |--E. martensii BW05
              |    `--E. modestus BW05
              |--Galearctus BW05
              |    |--G. kitanoviriosus BW05
              |    `--G. timidus BW05
              |--Petrarctus BW05
              |    |--P. demani [=Scyllarus demani] BW05
              |    `--P. rugosus BW05
              `--Scyllarus BW05
                   |--S. americanus (Smith 1869) C73
                   |--S. arctus (Linnaeus 1758) DAS03
                   |--S. chacei BW05
                   |--S. depressus BW05
                   |--S. planorbis BW05
                   `--S. pygmaeus (Bate 1888) KK03

*Type species of generic name indicated


[BW05] Booth, J. D., W. R. Webber, H. Sekiguchi & E. Coutures. 2005. Diverse larval recruitment strategies within the Scyllaridae. New Zealand Journal of Marine and Freshwater Research 39 (3): 581–592.

[B55] Bott, R. 1955. Dekapoden (Crustacea) aus El Salvador. 2. Litorale Dekapoden, außer Uca. Senckenbergiana Biologica 36: 45–70.

[C73] Camp, D. K. 1973. Stomatopod Crustacea. Memoirs of the Hourglass Cruises 3 (2): 1–100.

[DAS03] Dixon, C. J., S. T. Ahyong & F. R. Schram. 2003. A new hypothesis of decapod phylogeny. Crustaceana 76: 935–975.

[G05] George, R. W. 2005. Evolution of life cycles, including migration, in spiny lobsters (Palinuridae). New Zealand Journal of Marine and Freshwater Research 39: 503–514.

[H86] Holthuis, L. B. 1986. Decapoda. In: Botosaneanu, L. (ed.) Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) pp. 589–615. E. J. Brill/Dr. W. Backhuys: Leiden.

[KK03] Kocataş, A., & T. Katağan. 2003. The decapod crustacean fauna of the Turkish seas. Zoology in the Middle East 29: 63–74.

[L95] Laubitz, D. R. 1995. Caprellidea (Crustacea: Amphipoda) from the southern and western Indian Ocean. Mésogée 54: 81–100.

[MG-H11] McEnnulty, F. R., K. L. Gowlett-Holmes, A. Williams, F. Althaus, J. Fromont, G. C. B. Poore, T. D. O'Hara, L. Marsh, P. Kott, S. Slack-Smith, P. Alderslade & M. V. Kitahara. 2011. The deepwater megabenthic invertebrates on the western continental margin of Australia (100–1100 m depths): composition, distribution and novelty. Records of the Western Australian Museum Supplement 80: 1–191.

[MC05] Montgomery, S. S., & J. R. Craig. 2005. Distribution and abundance of recruits of the eastern rock lobster (Jasus verreauxi) along the coast of New South Wales, Australia. New Zealand Journal of Marine and Freshwater Research 39 (3): 619–628.

[TSH09] Titelius, M. A., A. Sampey & C. G. Hass. 2009. Crustaceans of Mermaid (Rowley Shoals), Scott and Seringapatam Reefs, north Western Australia. Records of the Western Australian Museum Supplement 77: 145–176.

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