Producing one generation per year.

The pattern of veins in the wings.

The underside of the body. Opposite: Dorsal.

The top of the head between the eyes. See also: Frons, Occiput.

A ventral flap on segment 8 in females lacking an ovipositor.

A spine on the underside of segment 8 in some damselflies.

The copulatory posture in which the male transfers sperm to the female. See also: Tandem, Secondary Genitalia.

Pertaining to damselflies (suborder Zygoptera). Opposite: Anisopteran.