The dragonfly Orthetrum cancellatum, commonly known as the ‘black-tailed skimmer’, is a species of the family Libellulidae widely distributed in Europe and Asia. It is recognisable by its medium size (44-53 mm in length and a wingspan of 70-82 mm), a relatively wide and flattened abdomen, and transparent wings. Mature males have a striking bluish or greyish-blue colouration on the abdomen with a black tip, while females and young males are yellow with two dark longitudinal stripes on the abdomen, creating a characteristic reticulated appearance. Their eyes are generally green and the wings have black pterostigmas and a yellowish costal vein.
Orthetrum cancellatum mainly inhabits stagnant or slow-flowing waters, such as lakes, ponds, marshes or gravel pits, preferring bare, sandy or stony banks with little riparian vegetation. It is a common and prolific species that is often seen perched on the ground or bare material near the water, patrolling its territory at low altitude and making rapid flights. The larval stage can last between one and three years and develops among submerged plant debris and shallow bottoms. Females lay their eggs by striking the water with their abdomen, and both males and females are quite active during warm days from late spring to early autumn.
Photo taken in Parc du Paradis in Braine-l'Alleud, Belgium
Source: Bedfordshire Odonata
English