Camelobaetidius leentvaari Demoulin 1966

Nieto, Carolina, Grillet, Maria-Eugenia, Domínguez, Eduardo, Molineri, Carlos & Guerrero, Edmundo, 2011, The Family Baetidae (Insecta: Ephemeroptera) from Venezuelan Guayana’s Uplands, Zootaxa 2808, pp. 1-17 : 8

Camelobaetidius leentvaari Demoulin 1966

( Figs. 4 , 37–46 )

Taxonomy. The specimens collected here are placed in C. leentvaari , presenting a single difference: tarsal claws with 28 denticles instead of 17–23. This species can be distinguished from the other species of the genus by the following combination of characters: 1) labrum, dorsally with a subapical row of setae ( Fig. 37 ); 2) mandibles with setae between prosthecae and molae ( Figs. 38–39 ); 3) lingua subequal to superlinguae ( Fig. 40 ); 4) maxillary palpi shorter than galea-lacinia ( Fig. 41 ); 5) segment II of labial palpi rounded ( Figs. 42 a and b); 6) coxal gills small; 7) prosternum with single, medial protuberance; 8) femur I with a tubercle on ventral margin ( Fig. 43 ); 9) apical margin of tibia with an excavation and a patch of short spines ( Fig. 43 ); 10) tarsal claws with 17-28 denticles ( Fig. 44 ); 11) posterior margin of terga with rounded projections ( Fig. 45 ); 12) paraprocts as in Fig. 46 ; 14) terminal filament subequal in length to abdominal segment X.

Distribution. Brazil, Surinam and Venezuela.

Material examined. Two nymphs: Kamoirán river, 5º 37´N, 61º 21´W, 1313 m, 20/ 03/ 2006, EG, AMO, and MEG cols. Material housed at IML.

Figures

FIGURES 2 – 7. Nymphs, dorsal habitus. 2, Baetodes proiectus. 3, Camelobaetidius billi. 4, Camelobaetidius leentvaari. 5, Camelobaetidius mathuriae. 6, Harpagobaetis gulosus. 7, Spiritiops silvudus.

FIGURES 37 – 46. Camelobaetidius leentvari. Nymph. Mouthparts (Figs. 37 – 42): 37, labrum, left d. v., right v. v.; 38, left mandible v. v.; 39, right mandible v. v.; 40, hypopharynx v. v.; 41, maxilla v. v.; 42 a, labium, left v. v., right d. v.; 42 b, labial palp. 43, leg I; 44, tarsal claw I. 45, posterior margin of tergum IV. 46, paraproct.