About Protosticta sanguinostigma Fraser, 1922
Protosticta sanguinostigma Fraser, 1922 is a large, slender damselfly. Its eyes are bottle-green on the upper half and pale green on the lower half, with a reddish-brown equatorial band separating the two sections. The thorax has a glossy bronze-black dorsum and pale blue sides. A narrow black stripe edged with brown runs across the anterior border of the metepimeron. Its wings are transparent, with a blood-red pterostigma. The abdomen is dark-brown on the dorsum and paler on the sides. Segment 1 and 2 have white markings on their lateral sides. Segments 3 to 6 have broad distal black annules, while segments 4 to 7 have broader blue basal annules. Segment 8 is turquoise-blue with a black apical border, and segments 9 and 10 are entirely black. The anal appendages are black. Females are similar in appearance to males, but have a shorter, stouter build. This species inhabits first and second order streams located in areas with good forest cover. Historically, it was only known to occur in Kodagu, Wayanad, and the Nilgiris. Recent studies have confirmed that additional populations of this species exist in other parts of South India.
