Type material of poorly known taxa currently placed under the genera Leptagrion Selys and Telagrion Selys is reviewed, illustrated, and correctly associated with currently known specimens in collections. The following changes are made: Leptagrion beebeanum Calvert and Leptagrion fernandezianum Rácenis are placed and keyed in a new genus, Bromeliagrion De Marmels gen. nov.; Bromeliagrion rehni Garrison sp. nov. is described from Ecuador. The following synonymies are proposed: Leptagrion auriceps St. Quentin is a junior synonym of Leptagrion macrurum (Burmeister); Leptagrion autazensis Sjöstedt is a junior synonym of Aeolagrion flammeum (Selys); Leptagrion? rufum Selys is a junior synonym of Anisagrion inornatum (Selys); and Leptobasis tenax St. Quentin is a junior synonym of Telagrion longum Selys.

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are described and illustrated. All holotypes are deposited at MIZA. Macrothemis heteronycha and Micrathyria paruensis are recorded from Venezuela for the first time, and Micrathyria dunklei for the second. Some of their features are illustrated. Distribution maps of all these species are also presented.

Heteragrion makiritare sp. nov. is described from two males from the Pantepui region -holotype: Venezuela, Amazonas State, Marahuaka, Sima (3°43'N, 65°31'W), 1,140 m a.s.l., MIZA, no. 17250. It belongs in the species group whose paraprocts are absent in the male sex. The identity of H. macilentum is elucidated by examining its lectotype and a syntype, which resulted to be not conspecific. The females of H. breweri and Philogenia ferox are described for the first time. The ultimate instar exuviae of H. bariai, H. breweri, H. chlorotaeniatum and H. mitratum are figured and compared. Figures of the female intersternite of these species, and of H. pemon, are provided. The larva of Sciotropis cyclanthorum, as well as the ultimate instar exuviae of Archilestes tuberalatus and Lestes apollinaris are described and illustrated.

Andaeschna gen. n. is established for three neotropical species currently assigned to Aeshna (Aeshna s.str.) Fabricius: Andaeschna unicolor (Martin, 1908) comb. n., A. rufipes (Ris, 1918) comb. n., and A. andresi (Racenis, 1958) comb. n. (type species). A fourth species, Andaeschna timotocuica sp. n., is described from Venezuela. The male lectotype of A. unicolor is redescribed. Andaesehna shares some peculiar character states with the Old World species 'Anaciaeschna' isoceles (Müller, 1767), but a close phylogenetic relationship between the two can not be demonstrated convincingly, and the true generic affiliation of the latter is unknown.

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Aeshna (Hesperaeschna) condor sp. nov. is described and illustrated from four males and six exuviae. The adult color pattern does not resemble that of any other Venezuelan species, but structurally the new species comes closest to A. (H.) punctata and A. (H.) joannisi. This latter is here recorded for the first time from Venezuela, and its exuviae are described. The larva of A. ( Marmaraeschna) vigintipunctata is also described and figured. A key to the ultimate instar larvae of all aeshnids found in the region of the upper Rio Quinimari, Tachira State, Venezuela, is presented.