Description of the immature stages of Dircaea quadriguttata (Paykull, 1798) with notes on adult copulative organs (Coleoptera: Melandryidae) - Burakowski, Bolesław (1905–2003); Pollock, Darren Andrew (1963– ); Polska Akademia Nauk. Muzeum i Instytut Zoologii (2003)