A new species of Cryptonympha Lugo-Ortiz & McCafferty (Ephemeroptera, Baetidae) from Cerro Duida (Venezuela) Author Derka, Tomáš Author Nieto, Carolina text Zootaxa 2018 2018-02-05 4377 4 587 592 journal article 30841 10.11646/zootaxa.4377.4.9 95b0e1a1-4c8f-42ae-9036-94795ead1186 1175-5326 1166008 9F2887BD-C8A3-4BD7-8B9C-FF50554EE483 Key to the nymphs of Cryptonympha 1 Posterior margin of terga with rounded spines ( Fig. 16 ); gills II–VII long, 2.5 times the length of each tergum ( Figs. 6–7 ), segment II of maxillary palpi ( Fig. 12 ) at least two times the length of segment I, gill I nearly half length of gill IV ........................... ........................................................................................................................................................................... C. tracheata sp. nov. - Posterior margin of terga with pointed spines, gills II–VII shorter, 1.5 times the length of each tergum, segment II of maxillary palpi shorter than two times the length of segment I, gill I longer or only slightly shorter than gill IV........................................... 2 2 Tarsal claw with single row of denticles, prosteca of left mandible with a long, robust and pilose seta........................... C. copiosa - Tarsal claw with two rows of denticles, prosteca of left mandible without a long, robust and pilose seta....................................... 3 3 Head capsula exteriorly from antennae with two small anterolateral protuberances, gill I large, longer than gill IV, hind wings pads rudimentary ........................................................................................................................................................... C. genevievae - Head capsula exteriorly from antennae without two small anterolateral protuberances, gill I small, slightly shorter than gill IV, hind wings pads absent ....................................................................................................................................................... C. dasilvai