The damselfly genus Mecistogaster (Odonata: Pseudostigmatidae) from the Brazilian Atlantic Forest with a description of three new species and a neotype designation for M. amalia (Burmeister, 1839)
Soldati Lacerda, Déborah S.
Monteiro Machado, Angelo B.
Zootaxa
2019
2019-09-10
4668
2
207
228
5MCQ
Rambur
1842
[352,520,1536,1562]
Insecta
Pseudostigmatidae
Mecistogaster
Animalia
Odonata
2
209
Arthropoda
genus
1. Costal margin at level of pseudostigma of HW not projected anteriorly; cerci in lateral view straight........... M. linearis 1’. Costal margin at level of pseudostigma of HW abruptly projected anteriorly ( Fig. 12); apex of cerci in lateral view bent ventrally ( Fig. 28)........................................................................................ 2 2. Anterior hamule with alula ( Fig. 17)...................................................................... 3 2’. Anterior hamule without alula ( Fig. 18).................................................................... 4 3. Mesepimeron totally reddish-brown ( Fig. 9); penis segment 2 inectal view with one lateral elevation, in lateral view with contour foot-shaped ( Figs 23, 24).................................................................... M. amalia 3’. Mesepimeron with reddish-brown area restricted to lower 1/5 of sclerite ( Fig. 8); penis segment 2 inectal view with two lateral elevations, in lateral view with contour not foot-shaped ( Figs 25, 26)........................... M. nordestina sp. nov. 4. Mesepimeron with reddish-brown area restricted to lower 1/5 of sclerite ( Fig. 8); contour of penis segment 2 inlateral view with dorsal and ventral margin straight ( Fig. 22), apex of inner fold projected ventroapically as a tubercle ( Fig. 22)........................................................................................... M. kesselringi sp. nov. 4’. Mesepimeron totally reddish-brown ( Fig. 9); contour of penis segment 2 inlateral view with dorsal margin undulated and ventral margin with a semicircular elevation at midlength ( Fig. 20), apex of inner fold hardly visible, not projected ventroapically ( Fig. 20).............................................................................. M. mielkei sp. nov.