On the diagnostic characters of the genus Stygonitocrella (Copepoda, Harpacticoida), with descriptions of seven new species from Australian subterranean waters 2324 Author Karanovic, Tomislav Author Hancock, Peter text Zootaxa 2009 2009-12-22 2324 1 1 85 https://biotaxa.org/Zootaxa/article/view/zootaxa.2324.1.1 journal article 10.11646/zootaxa.2324.1.1 1175­5334 5313036 55E33A9D-AB38-4FA9-9CBD-0AA24A130CE4 Key to species of Megastygonitocrella gen. nov. 1 Endopod of second leg with single apical element ...................................................................................................... 2 - Endopod of second leg with two apical elements ......................................................... M. karamani ( Petkovski, 1959 ) 2 Endopod of second and third legs two-segmented ...................................................................................................... 3 - Endopod of second and third legs one-segmented....................................................................................................... 4 3 Inner seta on second endopodal segment of second leg absent ........................................ M. petkovskii ( Pesce, 1985 ) - This seta present....................................................................... M. colchica ( Borutzky & Michailova-Neikova, 1970 ) 4 Fifth leg with unarmed endopodal lobe ....................................................................................................................... 5 - Fifth leg endopodal lobe armed ................................................................................................................................... 7 5 Fifth leg exopod free..................................................................................................................................................... 6 - Fifth leg exopod fused to somite ............................................................................................. M. pagusregalis sp. nov. 6 Habitus constricted at genital somite ..................................................................................................... M. dec sp. nov. - Habitus not constricted .................................................................................................................... M. kryptos sp. nov. 7 Third exopodal segment of fourth leg with one or two inner setae .............................................................................. 8 - Third exopodal segment of fourth leg without inner setae ........................................ M. ljovuschkini ( Borutzky, 1967 ) 8 Third exopodal segment of fourth leg with one inner seta .......................................................................................... 9 - Third exopodal segment of fourth leg with two inner setae ....................................... M. bispinosa ( Karanovic, 2006 ) 9 Integument without cuticular windows...................................................................................................................... 10 - Cuticular windows present .......................................................................................... M. trispinosa ( Karanovic, 2006 ) 10 Fifth leg endopodal lobe with two armature elements ................................................................... M. ecowisei sp. nov. - Fifth leg endopodal lobe with only one element....................................................... M. unispinosa ( Karanovic, 2006 )