Hair pencil , Pheromone spraying organ (about 1 cm  in size)  of <i>Euploea core</i> (Cramer, 1780) - Common Crow. This specimen belongs to sub species   <i>  Euploea core core </i> (Cramer, [1780]) – Indian Common Crow         in India.
<a href="//commons.wikimedia.org/wiki/User:Sandipoutsider" title="User:Sandipoutsider">Sandipoutsider</a>
<span class="int-own-work" lang="en">Own work</span>