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href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752/bgimage">Images</a><span></span><a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752/bglink">Links</a><span></span><a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752/bgref">Books</a><span></span><a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752/data">Data</a><span></span></td></tr></table><div style="clear: both;"></div> <table width="100%" cellspacing="0" cellpadding="0"><tr><td class="col2-body"> <table width="100%" cellspacing="0" cellpadding="0"><tr><td class="node-container"><div class="bgpage-roots"><a href="https://web.archive.org/web/20160801015355/http://bugguide.net/">Home</a> » Guide » <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/3" title="Phylum">Arthropods (Arthropoda)</a> » <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/878077" title="Subphylum">Chelicerates (Chelicerata)</a> » <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/4" title="Class">Arachnids (Arachnida)</a> » <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29746" title="Order">Whipscorpions (Uropygi)</a> » <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29748" title="Family">Thelyphonidae</a> » <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29750" title="Genus">Mastigoproctus</a> » <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752" title="Species">Giant Vinegaroon (Mastigoproctus giganteus)</a></div><div class="node-title"><h1>Species <i>Mastigoproctus giganteus</i> - Giant Vinegaroon</h1></div><div class="node-links"><a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#classification">Classification</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#names">Other Common Names</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#synonyms">Synonyms and other taxonomic changes</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#counts">Numbers</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#size">Size</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#range">Range</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#season">Season</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#food">Food</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#body">Remarks</a> · <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/29752#web_references">Internet References</a></div><div class="bgseparator"></div> <a id="images"></a><div class="bgpage-section"><div class="bgpage-section-heading"> </div><a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/211104"><img class="bgimage-thumb" src="https://web.archive.org/web/20160801015355im_/http://bugguide.net/images/cache/3LU/LZZ/3LULZZNLQZJZGR0H6RSH6RSHERCL2RRH6RZH5RRHKZTLMZDLQZQHERQHMRPLFLWLIZALFLCZRZCZLZPLSRFZSRCZYL.jpg" title="Whip Scorpion " vinegaroon"? - mastigoproctus giganteus" alt="Whip Scorpion " vinegaroon"? - mastigoproctus giganteus" height="93" width="125"/></a> <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/220757"><img class="bgimage-thumb" src="https://web.archive.org/web/20160801015355im_/http://bugguide.net/images/cache/QZT/LXZ/QZTLXZDL3L0HQR3ZSRYZIR3ZIRCZJLWLIZDLMZBL7ZZH2RQHPRRH2RZH6RDL7Z1LQZKH5R0HKZCLIZDL8RDL6ROL5R.jpg" title="Whipscorpion - Mastigoproctus giganteus" alt="Whipscorpion - Mastigoproctus giganteus" height="118" width="125"/></a> <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/221851"><img class="bgimage-thumb" src="https://web.archive.org/web/20160801015355im_/http://bugguide.net/images/cache/KQJ/R7Q/KQJR7Q3RFKS0I0OQ50K0W0S0W0ORW0H020S0E000P0ORQQ3RRQVRRQNRLQCQM0OQ50Q0P000SQ3RKQZ07QH0U0Z090.jpg" title="Vinegaroon - Mastigoproctus giganteus" alt="Vinegaroon - Mastigoproctus giganteus" height="83" width="125"/></a> <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/226198"><img class="bgimage-thumb" src="https://web.archive.org/web/20160801015355im_/http://bugguide.net/images/cache/9LF/LEL/9LFLELYLOLQR0HXRSH6RLHGRLHQROZ8RSH4RKH4ROLIZNLRZELJLFZ2R3Z3L2L0RHHSRELFLULLZULYL3Z3LAL6RTL.jpg" title="Vinnie the Vinegaroon - Mastigoproctus giganteus" alt="Vinnie the Vinegaroon - Mastigoproctus giganteus" height="125" width="124"/></a> <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/341888"><img class="bgimage-thumb" src="https://web.archive.org/web/20160801015355im_/http://bugguide.net/images/cache/SZC/LIZ/SZCLIZOLYLKHSRRHSRRHGR0HERTL6RLHQRNLHZJZPRDLER1L0Z6LFLBL8ROZIRWLIRULFLELQZOLQZLH5RSH7ROZ3L.jpg" title="Mastigoproctus giganteus mating 1 - Mastigoproctus giganteus - male - female" alt="Mastigoproctus giganteus mating 1 - Mastigoproctus giganteus - male - female" height="93" width="125"/></a> <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/341891"><img class="bgimage-thumb" src="https://web.archive.org/web/20160801015355im_/http://bugguide.net/images/cache/SZC/LIZ/SZCLIZOLYLKHSRCZ4RDZ0R3ZMRQH7ZRHGRQHSZCL4RVLXZTL8RTLSZCL0ZDLGRVLYLDZRZYZMRYZJLFZXRDZJLELFL.jpg" title="Mastigoproctus giganteus mating 3 - Mastigoproctus giganteus - male - female" alt="Mastigoproctus giganteus mating 3 - Mastigoproctus giganteus - male - female" height="93" width="125"/></a> <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/341893"><img class="bgimage-thumb" src="https://web.archive.org/web/20160801015355im_/http://bugguide.net/images/cache/BHG/HTH/BHGHTH8HYHKLUZIL8ZMLNZ5LBZ0LTH5HZRWHVZILBZWHYH2HYHUHDH4H1HSLTHHLPZSLBH2HBH0L2ZZLEZ7HFHEH1Z.jpg" title="Mastigoproctus giganteus mating 4 - Mastigoproctus giganteus - male - female" alt="Mastigoproctus giganteus mating 4 - Mastigoproctus giganteus - male - female" height="93" width="125"/></a> <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/node/view/924289"><img class="bgimage-thumb" src="https://web.archive.org/web/20160801015355im_/http://bugguide.net/images/cache/UKH/KPK/UKHKPKZKTK5QRS6QHSVQY09QB06QNK5KRS7KDK4KAKVQOKBQ1KIKBKRKAKVQ30VQRSGKZSGKCK5KRS6QA0LK2K7KVK.jpg" title="Insect - Mastigoproctus giganteus" alt="Insect - Mastigoproctus giganteus" height="93" width="125"/></a> </div><div class="bgseparator"></div> <a id="classification"></a><div class="bgpage-section"><div class="bgpage-section-heading">Classification </div><div class="bgpage-classification"><div class="bgpage-taxon"><span class="bgpage-taxon-title">Kingdom </span><span class="bgpage-taxon-desc">Animalia (Animals)</span> <div class="bgpage-taxon"><span class="bgpage-taxon-title">Phylum </span><span class="bgpage-taxon-desc">Arthropoda (Arthropods)</span> <div class="bgpage-taxon"><span class="bgpage-taxon-title">Subphylum </span><span class="bgpage-taxon-desc">Chelicerata (Chelicerates)</span> <div class="bgpage-taxon"><span class="bgpage-taxon-title">Class </span><span class="bgpage-taxon-desc">Arachnida (Arachnids)</span> <div class="bgpage-taxon"><span class="bgpage-taxon-title">Order </span><span class="bgpage-taxon-desc">Uropygi (Whipscorpions)</span> <div class="bgpage-taxon"><span class="bgpage-taxon-title">Family </span><span class="bgpage-taxon-desc">Thelyphonidae</span> <div class="bgpage-taxon"><span class="bgpage-taxon-title">Genus </span><span class="bgpage-taxon-desc"><i>Mastigoproctus</i></span> <div class="bgpage-taxon"><span class="bgpage-taxon-title">Species </span><span class="bgpage-taxon-desc"><i>giganteus</i> (Giant Vinegaroon)</span> </div> </div> </div> </div> </div> </div> </div> </div> </div></div><div class="bgseparator"></div> <a id="names"></a><div class="bgpage-section"><div class="bgpage-section-heading">Other Common Names </div><div class="bgpage-text">Vinegarroon, Vinegaroon</div></div><div class="bgseparator"></div> <a id="synonyms"></a><div class="bgpage-section"><div class="bgpage-section-heading">Synonyms and other taxonomic changes </div><div class="bgpage-text"><i>Mastigoproctus giganteus</i> (Lucas)<br/> </div><div class="bgpage-text">Orig. Comb: <i>Thelyphonus giganteus</i> Lucas 1835</div></div><div class="bgseparator"></div> <a id="counts"></a><div class="bgpage-section"><div class="bgpage-section-heading">Numbers </div><div class="bgpage-text">only whipscorpion n. of Mex.</div></div><div class="bgseparator"></div> <a id="size"></a><div class="bgpage-section"><div class="bgpage-section-heading">Size </div><div class="bgpage-text">up to 85 mm (>3")</div></div><div class="bgseparator"></div> <a id="range"></a><div class="bgpage-section"><div class="bgpage-section-heading">Range </div><div class="bgpage-text">AZ-TX-OK, FL / Mex - UF, 2011</div></div><div class="bgseparator"></div> <a id="season"></a><div class="bgpage-section"><div class="bgpage-section-heading">Season </div><div class="bgpage-text">July-Oct (BG data)</div></div><div class="bgseparator"></div> <a id="food"></a><div class="bgpage-section"><div class="bgpage-section-heading">Food </div><div class="bgpage-text">Carnivorous - preys on smaller creatures (insects, worms and slugs).</div></div><div class="bgseparator"></div> <a id="body"></a><div class="bgpage-section"><div class="bgpage-section-heading">Remarks </div><div class="bgpage-text">The vinegaroon is nocturnal and has poor vision. The whiplike tail is used as a sensory organ, as is the first pair of legs, which is not used for walking. Although its tail in unable to sting, this creature can spray an acidic mist from a scent gland at the base of the tail when disturbed. The spray is 85% concentrated acetic acid/vinegar, hence the common name "Vinegaroon." The heavy pinching mouthparts (modified pedipalps) can also inflict a painful bite. Although very unlikely to attack humans, it can certainly defend itself if provoked.</div></div><div class="bgseparator"></div> <a id="web_references"></a><div class="bgpage-section"><div class="bgpage-section-heading">Internet References </div><div class="bgpage-text"><a href="https://web.archive.org/web/20160801015355/http://entnemdept.ufl.edu/creatures/misc/misc/giant_whip_scorpion.htm" class="bb_url">Featured Creatures</a> - W.H. Kern Jr. and R.E. Mitchell, UF, 2011<br/> </div><div class="bgpage-text"><a href="https://web.archive.org/web/20160801015355/http://www.enchantedlearning.com/subjects/arachnids/whipscorpion/Vinegarroon.shtml" class="bb_url">EnchantedLearning.com</a> - diagram of bodyparts</div></div><div class="bgseparator"></div> <div class="node-byline">Contributed by <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/user/view/346" title="View user profile.">john and jane balaban</a> on 28 August, 2005 - 10:50am<br/>Additional contributions by <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/user/view/64" title="View user profile.">Hannah Nendick-Mason</a>, <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/user/view/3253" title="View user profile.">Chuck Entz</a>, <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/user/view/4620" title="View user profile.">Mike Quinn</a>, <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/user/view/14218" title="View user profile.">kschnei</a>, <a href="https://web.archive.org/web/20160801015355/http://bugguide.net/user/view/29310" title="View user profile.">Abigail Parker</a><br/>Last updated 24 July, 2014 - 11:23am</div></td></tr></table><br/> </td></tr> <tr><td> <img src="/web/20160801015355im_/http://bugguide.net/themes/bugguide/images/pixel.gif" alt="" height="1" width="587" align="bottom"/> </td></tr> </table> </td></tr></table> <div class="footer"> <p><b>Disclaimer</b>: Dedicated naturalists volunteer their time and resources here to provide this service. 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