Megaphyllum rhodopinum (Verhoeff, 1928)

Figs 16a–g

Brachyiulus (Chromatoiulus) rhodopinus Verhoeff, 1928: 33 –34, Fig. 6. Brachyiulus rhodopinus: Verhoeff 1937: 106 –108.

Brachyiulus unilineatus rhodopinus: Verhoeff 1937: 106 –108, 117, Fig. 14. Chromatoiulus unilineatus rhodopinus: Strasser 1966b: 330, 358, 381. Chromatoiulus rhodopinus: Strasser 1967: 285; 1974: 290.

Chromatoiulus (Chromatoiulus) rhodopinus: Strasser 1969: 159 .

Megaphyllum rhodopinum: Enghoff & Kime 2009; Lazányi et al. 2012: 14, 22–23, 28, 41.

Material examined. Bulgaria: 1 ♂, Slavyanka Mt., between Paril vill. and Tsarev Vrah peak, ca. 2000 m a.s.l., leg. P. Beron & S. Andreev (NMNHS).

Distribution. Bulgaria (Vagalinski & Stoev 2007); Greece (Strasser 1967, 1974; Lazányi et al. 2012).

Diagnosis. The species differs from the two closest species M. sjaelandicum (Meinert, 1868) and M. tauricum (Attems, 1907) by the more widely rounded and simple promere without lobes or indentation (Figs 16a–c), and by the very thin, tapering posterior opisthomere process (pp) (Figs 16a–b).

Opisthomere’s (Figs 16a–b, 16d) posterior process (pp) slender, apically pointed, shorter than the solenomere. The finger-like anterior solenomere process (asp) longer than the posterior one (psp). Apical posterior hump (ph) hardly distinguishable.

Uniformly brown animals, with no dorsal longitudinal lines. Body length and height: males: 21.2–32.5mm, 1.6–2.2mm; females: 35.4–42mm, 2.9–3.4mm.

Remarks. This species is known only from the eastern parts of the Balkan Peninsula. Nearly a decade after the original description (Verhoeff 1928) Verhoeff lowered rhodopinum to a subspecies of M. unilineatum (Verhoeff 1937) . Strasser (1967) elevated it to species rank when he discussed the unilineatum -group (i.e. M. (u.) unilineatum, M. (u.) hercules, M. (u.) rhodopinum), which was supported by Lazányi et al. (2012).