Heteragrion bariai De Marmels, 1989

(Figs. 4 E–F, 7G–I, 12G–I, 17)

Material examined: UARC: 17 ♂♂, 3 ♀♀ December 2015, Caquetá Department, Araracuara Municipality, Guaca- mayo Guard, -0.6308, -72.2497, Leg: L. Pérez, CEUA: 3 ♂♂, 1 ♀ 11 June 2014 Meta Department, San Martín Mu- nicipality, Rey Zamuro Reserve, 3.5417, -73.3572 265m a.s.l., Leg: C. Moreno. ICN: 1 ♀ Amazonas Department, Leticia Municipality, Km 2 road to Tarapacá -2.8786, -69.7442 . 2 ♀♀ Guaviare Department, San José Municipality, Vereda Playa Güio 2.5482, -72.7136. ANDES–E: 1 ♂ Amazonas Department, Leticia Municipality, Yahuarcaca Lake -4.1942, -69.9547 . 2 ♂♂, 3 ♀♀ Puerto Nariño Municipality, Natura Park, El Vergel Community -3.8594, -70.2046 91m a.s.l., Leg: Y. Cano , 1 ♂ Meta Department, San Martín Municipality . 2 ♂♂, 1 ♀ Vaupés Depart- ment, Mitú Municipality, Rivera Caño Sangre 1.2145, -70.2337 188m a.s.l., Leg: M. Sánchez , 1 ♀ Cucura 1.2009, -70.1794 191m a.s.l. , Leg: M. Sánchez .

Remarks: This species was described by De Marmels (1989) from Cerro La Neblina, Río Negro Department in Venezuela. De Marmels (2004) described the larva. Bota-Sierra (2014) reported H. bariai from Colombia (Meta Department) based on three males and one female. Here we report H. bariai from Amazonas, Caquetá, Guaviare and Vaupés Departments.

The males of this species are small (abdomen around 35 mm) with color pattern similar to H. falvidorsum, H. bickorum and H. mitratum mitratum . They differ from H. flavidorsum and H. m. mitratum because these two do not present ventrobasal convexity on cerci in mediodorsal view (Figs. 9H, 10H), and from H. bickorum by the distance between bifurcation of medial process and tip of cerci close to one third the length of cerci in H. bariai (Fig. 7G), but close to half that distance in H. bickorum (Fig. 8A). Females are also small (abdomen around 31mm) and very similar in color pattern to H. breweri; they differ by the shape of basal teeth of valves in ventral view, rectangular in H. breweri (Fig. 13E), but rounded in H. bariai (Fig. 12H).