Tatocnemididae R´acenis, 1959

Bybee, Seth M., Kalkman, Vincent J., Erickson, Robert J., Frandsen, Paul B., Breinholt, Jesse W., Suvorov, Anton, Dijkstra, Klaas-Douwe B., Cordero-Rivera, Adolfo, Skevington, Jeffrey H., Abbott, John C., Herrera, Melissa Sanchez, Lemmon, Alan R., Lemmon, Emily Moriarty & Ware, Jessica L., 2021, Phylogeny and classification of Odonata using targeted genomics, Molecular Phylogenetics and Evolution 160, pp. 107115-107115 : 11

Tatocnemididae R´acenis, 1959 stat. res.

(type genus: Tatocnemis Kirby, 1889 )

— medium-sized to fairly large (hindwing 22–32 mm) damselflies restricted to eastern Madagascar. Wings clear, at most stained toward tips, with two Ax and no intercalated veins distally in radial fields; arculus roughly at two-thirds of distance between wing base and node; quadrangle without cross-veins; R4 originates at subnode and IR3 one or two cells distal to that; proximal supplementary crossvein between median vein and R4 present; pterostigma rhomboidal; wing tips crenulated, i.e. wavy rather than smoothly rounded due to two or three shallow excavations in the hind border below the pterostigma. Adult variably perches with wings closed or open, abdomen held roughly horizontal. Adult thorax black with dull yellow to reddish markings, abdomen uniformly red, body never metallic or pruinose. Genital ligula with setae on shaft, ending in two curled flagella. Adult male cerci forcipate, relatively thick, usually with distinct subapical expansion on inner margin and denticles on outer margin; paraprocts reduced to simple point. The only description available suggests that the caudal gills are long and inflated, thus appearing sausage-shaped, with a long apical filament. Included genera: Tatocnemisdj