Key to the subspecies of Megaphyllum projectum Based on male and female genitalia characters; female of M. p. deubeli not included because it needs further investigation. 1 Male ............................................................................................... 2 - Female.............................................................................................. 4 2 Anterior process of opisthomere rudimentary, shorter than the well-developed posterior process (Fig. 10). Promere triangular, without apical serrated lobe................................................ M. projectum deubeli (Verhoeff, 1899) - Anterior and posterior processes of opisthomere of approximately the same length and development (Fig. 3). Promere with a serrated apical lobe (by M. p. kochi this serrated lobe sometimes not visible under a standard light microscope, just under stereo microscope, at high magnification).................................................................. 3 3 Promere tapering, the whole gonopod in situ appears to be thin (Figs. 14–15)......... M. projectum kochi (Verhoeff, 1907) - Promere not tapering, the whole gonopod in situ appears to be stout (Figs. 1, 16).... M. projectum projectum Verhoeff, 1894 4 Ampullas well-developed, dorsal ampulla wide, bulbous, ventral ampulla elongated (Figs. 8 a–c)............................................................................................ M. projectum projectum Verhoeff, 1894 - Ampullas thin, elongated, dorsal ampulla not bulbous M. projectum kochi (Verhoeff, 1907)

Published as part of Lazányi, Eszter & Korsós, Zoltán, 2011, Revision of the Megaphyllum projectum Verhoeff species complex (Myriapoda: Diplopoda: Julida: Julidae), pp. 43-56 in Zootaxa 2864 on page 53, DOI: 10.5281/zenodo.207900