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Male T's without spurs/hooks

Discussion in 'Tarantula Questions & Discussions' started by 8 leg wonder, Jul 17, 2004.

  1. 8 leg wonder

    8 leg wonder Arachnoangel Old Timer

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    Can anyone list the species, without tibial hooks/spurs. I have a mature male T without spurs, and I am at a lost at what species it is, can anyone help me?? :?


    The pics are in the thread "Very confusticated, PLEASE HELP!"
     
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  2. Ahh There's a website somewhere that lists the species/genera that lack such anatomy, though I forget it.

    To be the pointer of the obvious, such species lack these body parts due to the spiders evolving in such conditions that the spurs didn't increase the reproductive abilities, as such they didn't follow "natural selection" and become a stable part of the spider, incresing in size.structure with each generation and evolution. Such cases would be in the larger spiders such as Theraphosa, where possibly due to size, they are redundant. Or in certain arboreal species - noteably the larger ones such as poecilotheria...

    Something nice to think about anyway.

    Sorry I've been little help.
     
  3. AphonopelmaTX

    AphonopelmaTX Moderator Staff Member

    Here ya go:

    A Line Listing of Theraphosid Genera:
    Male Specimens: Tibial Apophyses and Palpal Emboli:

    Sexually mature males that do not possess tibial apophyses (mating
    "spurs" or "hooks"), 2003:

    (A)
    ANNANDALIELLA Hirst, 1909
    ANOPLOSCELUS Pocock, 1897: Africa
    AUGACEPHALUS Gallon, 2002 (In part): A. junodi (Simon, 1904): Africa
    (B)
    (C)
    CHILOBRACHYS Karsch, 1891
    CITHARISCHIUS Pocock, 1900: Africa
    COREMIOCNEMIS Simon, 1892
    (D)
    (E)
    EUPHRICTUS Hirst, 1908: Africa
    (F)
    (G)
    (H)
    HETEROSCODRA Pocock, 1899: Africa
    HETEROTHELE Karsch, 1879: Africa
    HYSTEROCRATES Simon, 1892: Africa
    (I)
    ISCHNOCOLUS Ausserer, 1871: Africa, Middle East, and Europe
    (J)
    (K)
    (L)
    LYROGNATHUS Pocock, 1895
    (M)
    METRIOPELMA Becker, 1878
    (N)
    NHANDU Lucas, 1981 (In part): N. carapoensis Lucas, 1981
    (O)
    ORPHNAECUS Simon, 1892 (unpublished data)
    (P)
    PACHISTOPELMA Pocock, 1901 (modified tibial apophyses consisting of a
    "shield" of spines)
    PHLOGIELLUS Pocock, 1897
    PHONEYUSA Karsch, 1884: Africa
    PHORMINGOCHILUS Pocock, 1895
    PLESIOPHRICTUS Pocock, 1899: (In part): some species may possess tibial
    apophyses
    POECILOTHERIA Simon, 1885: India and Sri Lanka
    (Q)
    (R)
    (S)
    SELENOCOSMIA Ausserer, 1871
    SELENOTHOLUS Hogg, 1902
    SELENOTYPUS Pocock, 1897
    SERICOPELMA Ausserer, 1875
    STROMATOPELMA Karsch, 1881: Africa
    (T)
    THERAPHOSA Thorell, 1870 (In part): T. blondi (Latreille, 1804)
    THRIGMOPOEUS Pocock, 1899 (unpublished data)
    (U)
    (V)
    (W)
    (XYZ)

    Uknown at this time: HAPLOCLASTUS, LOXOMPHALIA, and LOXOPTYGUS

    ------------------------------------------------------------------------
    Posted by Lucian Ross at the Yahoo Group arachnid_world message #21641
    -------------------------------------------------------------------------

    -Lonnie
     
    • Informative Informative x 1
  4. 8 leg wonder

    8 leg wonder Arachnoangel Old Timer

    Thank you for the info much appreciated
     
  5. BiomeBob

    BiomeBob Arachnopeon

    I wanted to ask this question as per T. blondi (Goliath), and thought I would search first as reading and discovering led me to mixed on whether the male has the spurs. Thanx for covering it. Alas, is there a way then of telling whether my Precious T. blondi is a male of female?

    As well, can you or anyone give me the same sexing info for Scolopendra gigantea?:confused:
     
  6. Also

    Also Avicularia versicolor
     
  7. ronin

    ronin Arachnosquire

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    I don't believe Selenobrachys have them either.
     
  8. jamesc

    jamesc Arachnoknight

  9. David_F

    David_F Arachnoprince Old Timer

    Do you have a reference for this? I have yet to translate the complete description paper for S. phillippinus so I may not have come across this info yet. Any info you can provide would be much appreciated. :)
     

  10. all genus Avicularia have tibial spurs ...
     
  11. T. blondi have tibial spurs but is very reduced and dont use it in mating.
     
  12. ronin

    ronin Arachnosquire

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    David - pm sent.
     
  13. BiomeBob

    BiomeBob Arachnopeon

    Thanx

    Thanx for the help on the blondi! Good to know.
    Now if I could just get that close of a look.