Denticulobasis and Tuberculobasis, new genera close to Leptobasis, with description of ten new species (Odonata: Coenagrionidae). Author Machado, Angelo B. M. text Zootaxa 2009 2108 1 36 journal article 10.5281/zenodo.187806 9a495f32-3eb8-4b35-bd46-adca3b5db2d2 1175-5326 187806 Key to males of Tuberculobasis (Male of T. cardinalis unknown) 1. Paraproct subequal or slightly longer than cercus ( Figs 79, 82, 85 ). Mesepisternal tubercles mamiliform and low (<0.82 mm) ( Figs 36, 38, 40, 42, 44 )............................................................................................................................ 2 1´. Paraproct much longer than cercus ( Figs 57–58, 60–61, 64 , 67). Mesepisternal tubercles not mammiliform and high (>1.41 mm: Figs 26, 28, 30, 32, 34 , 46 ) ....................................................................................................................... 6 2. Mesepisternal tubercle in dorsal view tear-shaped, tapering to a fine tip antero-distally ( Fig. 37 ). Mesostigmal plates curved and directed anteriorly ( Fig. 37 ) Rondônia State, Brazil ................................................................. T. karitiana 2´. Mesepisternal tubercles not tear-shaped. Mesostigmal plates straight ( Figs. 35, 39, 41, 43, 45 ) ............................... 3 3. Hind part of dorsum of S10 elevated ( Fig. 77 ). Median lobe of hind prothoracic lobe as broad as lateral lobes taken together ( Fig. 35 ). Mesepisternum with metallic luster Suriname ................................................................ T. geijskesi 3´. Hind part of dorsum of S10 not elevated ( Fig. 80, 83, 86 ). Median lobe of hind prothoracic lobe narrower than lateral lobes taken together ( Figs 41, 43 ). Mesepisternum lacking metallic luster........................................................... 4 4. Medial margin of cercus in posterior view with a distinct dorsal lobe making the ventral part of medial margin appear markedly concave ( Fig. 86 ) Venezuela , Brazil ............................................................................... T. yanomami 4´. Medial margin of cercus in posterior view almost straight with no dorsal lobe ( Fig. 83 ) or with only a small one ( Fig. 80 ), with ventral part of medial margin slightly convex to slightly concave................................................................ 5 5. Ventral process of cercus in lateral view a triangular plate tapering ventrally into a fine straight tip ( Fig. 82 ). Penis ( Fig. 92 ) with proximal lateral lobe digitiform. Pará State, Brazil ...................................................................... T. tirio 5´. Ventral process of cercus in lateral view digitiform with tip blunt and slightly curved anteriorly ( Fig. 79 ). Penis ( Fig. 91 ) with proximal lateral lobe triangular. Brazil , Venezuela . .................................................................. T. mammilaris 6. Mesepisternal tubercles with their bases well separated from mid-dorsal carina; lateral lobes of hind prothoracic lobe well developed ( Fig. 45 ). Roraima State, Brazil ...................................................................................... T. macuxi 6 ´. Mesepisternal tubercles with their bases adjacent to mid-dorsal carina; lateral lobes of hind prothoracic lobe poorly developed or absent ( Figs 25, 27, 29, 31, 33 ) ............................................................................................................... 7 7. Mesepisternal tubercles subparallel ( Figs 31, 32 ) with the anterior border connected with mesostigmal plate by a vertical curved plate ( Fig. 31 ). Amazonas, Pará, and Rondônia States, Brazil .............................................. T. inversa 7´. Mesepisternal tubercles strongly divergent ( Figs 25, 27, 29, 33 ) with anterior border not connected with mesostigmal plate by a vertical curved plate ( Figs 25–30, 33, 34 ) ............................................................................................ 8 8. Cercus in posterior view ( Fig. 74 ) with a dorsolateral semilunar cavity limited by a denticulated border. Colombia and Venezuela .............................................................................................................................................................. 8. 8`. Cercus in posterior view ( Figs. 59, 62, 65 ) with no dorsolateral semilunar cavity ...................................................... 9 9. Ventral process of cercus in posterior view digitiform with medial margin curved ( Fig. 62 ). SE Brazil . T. costalimai 9´. Ventral process of cercus in posterior view subtriangular with medial margin straight ( Figs. 59, 65 ) ...................... 10 10. Mesepisternal tubercles, high (2.36 mm), with the apex subtruncated ( Fig. 25 ). Dorsal lip of medin lobe of hind prothoracic lobe slightly elevated, medially fused with ventral lip ( Fig. 25 ). Anterior margin of mesostigmal plate with a median depression ( Fig. 25 ). Rondônia State, Brazil ...................................................................................... T. arara 10´. Mesepisternal tubercles very high (2.83 mm), conical with the apex not subtruncated, directed laterally ( Fig. 29 ). Dorsal lip of hind prothoracic lobe not elevated nor fused with ventral tip ( Fig. 29 ). Anterior margin of mesostigmal plate with no median depression ( Fig. 29 ). São Paulo State, Brazil .............................................................. T. guarani