About Paragomphus lineatus (Selys, 1850)
Paragomphus lineatus is a black-and-yellow dragonfly with bluish grey eyes. Its thorax is yellow, marked with blackish-brown stripes. A black dorsal line borders the mesothoracic collar on either side of the mid-dorsal carina, and an oblique antehumeral line joins this black line in its upper part, enclosing a thin yellow stripe. There is one line on the humeral suture and two closely placed lateral lines on the postero-lateral suture. Its abdomen is black, marked with yellow basal rings. Segment 1 has broadly yellow sides and a large dorsal apical spot. Segment 2 has a sub-dorsal black line on each side, which encloses a dorsal yellow spot. Segments 3 to 7 have broad black apical rings, and a lateral black line runs from the apical ring on each side, extending to the yellow base. Segments 8 and 9 have wide side dilatations; they are black on the dorsum except for fine basal yellow rings. Segment 10 is yellow, with black covering the basal half of its dorsum. The anal appendages are yellow and hood-shaped. Females are similar to males, but lack the dilatations on the last abdominal segments. This species is commonly found near streams, rivers, ponds and lakes, where it breeds.
