A new species of Parakari (Ephemeroptera: Baetidae) from Guiana Highlands Author Derka, Tomáš Author Nieto, Carolina Author Svitok, Marek text Zootaxa 2015 4028 2 296 300 journal article 10.11646/zootaxa.4028.2.9 8c3a5eff-3061-41c1-8bc7-2899bb871bd8 1175-5326 243196 1E8566D8-2E16-4BA1-A3D4-871F116910F1 Key to nymphs of Parakari (modified from Nieto & Derka, 2011 ) 1 Segment II of labial palpi with a broad distomedial projection (Fig. 24a, Nieto & Derka 2011 ) ............ P. churiensis - Segment II of labial palpi with a thin distomedial projection ( Fig. 9 ).......................................................................... 2 2 Labrum dorsally with two subapical setae near midline ( Fig. 4 , Nieto & Derka, 2011 ); posterior margin of abdominal tergum IV with pointed spines ( Fig. 12 , Nieto & Derka, 2011 ); right mandible with prostheca bifid apically ( Fig. 6 , Nieto & Derka 2011 ); mandibles with incisors short ( Figs. 5–6 , Nieto & Derka 2011 ) ..................... P. auyanensis - Labrum ( Fig. 4 ) dorsally with four subapical setae near midline; posterior margin of abdominal tergum IV with rounded spines intercalated with pointed spines ( Fig. 12 ); right mandible with prostheca bifid basally ( Fig. 6 ); mandibles with incisors elongate ( Figs. 5–6 ) ...................................................................................... P. roraimensis sp. n.