Mucotergum Ripkagen.
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publication ID |
https://doi.org/10.17109/AZH.61.1.47.2015 |
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persistent identifier |
https://treatment.plazi.org/id/03D32C18-FF95-BF6C-FE61-FE2CFD61FA1D |
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treatment provided by |
Felipe |
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scientific name |
Mucotergum Ripkagen. |
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Diagnosis. Rhyncaphytoptinemiteswithopisthosomaspindleformand withsubequal, microtuberculatedorsalandventralsemiannuli. Tubercles of scapular setae sc and setae sc absent; prodorsal shield with a short and roundedfrontallobe. Prodorsalshieldanddorsalsemiannulicoveredbymucus- likelayer. Gnathosomawithsetae ep and d present. CoxisternaeIandII, andlegsIandIIwithallusualsetae, includingbasiventralfemoralseta bv present. Femalegenitalianotappressedtocoxae, genitalcoverflapdivided intwoparts, withdifferentornamentation. Empodiumundivided. Caudal lobesnormalinsize, coneshapedandornamentedwithlongitudinalridges ventrallyandlaterally.
Type species. Mucotergum nigrum Ripka sp. n.
Etymology. Thegenericname, Mucotergum , isacontractionoftheLatin‘ mucus ’, meaningsecretion, mucusanddischarge, andLatin‘ tergum ’, back, shield, bodyandsur- face, whichrelatestotheexceptionallayeronthedorsalidiosoma. Thegenderisneuter.
Differentialdiagnosis. Thenewgenus Mucotergum issimilarto Asetacus Keifer. Itclearlydiffersfrom Asetacus mainlybyhavingallusualsetae, includingbasiventralfemoralseta bv onbothlegpairs, themucus- likecoveronthe prodorsalshieldanddorsalopisthosoma, theuncommonlydarkcolour, and lackoftuberclesofscapularsetae sc. Thesuiteofcharacteristicsusedtodifferentiate Mucotergum appeartobesignificantatgenericlevelbut, likesome othertaxaintheEriophyoidea, thegenericconceptsandseparationofseveral taxaassignedtosubfamilyRhyncaphytoptinaearethoughttobeweakand notbasedonnaturalgroupings ( LINdquIST & AMRINE 1996). Sofar, onlytwo eriophyoidmitesareknown, whichproduceclearliquidsecretionontheir body: Hoderusglobulus (Mohanasundaram, 1981) and Hyborhinuskallarensis Mohanasundaram, 1986 (cit. MANSON & GERSON 1996). Bothdiptilomiopid speciesweredescribedfromIndia, andbothhavetuberclesofscapularsetae sc andsetae sc. Themucus- likesecretiononprodorsalshieldanddorsalsemi- annuliisanunusualfeatureineriophyoidmites.
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