Boreviulisoma liouvillei Brolemann, 1928

Reboleira, Ana Sofia P. S. & Enghoff, Henrik, 2013, The genus Boreviulisoma Brolemann, 1928 — an Iberian-N African outlier of a mainly tropical tribe of millipedes (Diplopoda: Polydesmida: Paradoxosomatidae), Zootaxa 3646 (5), pp. 516-528 : 524-525

Boreviulisoma liouvillei Brolemann, 1928

Figs 20–26 .

Material examined. 1 3, 1 Ƥ syntypes, Morocco, Boulhout (Muséum national d’Histoire Naturelle, Paris). Name: Not stated by Brolemann, but Dr. Liouville was mentioned among the collectors on whose material Brolemann’s paper was based.

Diagnosis. Differs from congeneric species by having the metazonal setae much shorter and clavate and by lacking femoral knobs on male legs. Differs further from B. badium by having a pointed process on the gonopod tip, and from B. barrocalense n. sp. by being reddish-brown and by lacking a hawksbill-shaped process on the solenophore.

Descriptive notes. 3 width of midbody prozona: 0.92 mm, metazona 1.14 mm, Ƥ width of midbody prozona: 1.17 mm, metazona 1.36 mm.

Metazonal tubercles ( Figs 20–21 ) stronger and more keel-like than in B. barrocalense n. sp. Metazonal setae ( Figs 22–23 ) very short, slightly clavate.

Gonopods: The illustrations of Brolemann (1928) and Schubart (1960) ( Figs 24–26 ) agree with the studied specimen. In Brolemann’s drawing of the gonopod in mesal view it looks as if the solenomere is quite independent from the solenophore. In the syntype gonopod studied by us the solenomere, however, lies protected inside the solenophore, as in the other species.

Remarks. The available male specimen consists only of the head plus body rings 1–7, and one gonopod. All legs, except the first pair, are missing beyond the coxa; it is hence not possible to check for presence of femoral knobs.

The specimen recorded by Schubart (1960) is not in the Schubart collection deposited in the Zoological Museum in São Paulo (R. Pinto da Rocha in litt.).

Figures

FIGURES 20 – 23. Boreviulisoma liouvillei Brolemann, 1928, Ƥ syntype, SEM images of uncoated specimen. 20 — three midbody rings, dorsal view. 21 — three midbody rings, lateral view. 22 – 23 — a metazonal seta. Scale bars: 20, 21 — 100 µm; 22, 23 — 10 µm.

FIGURES 24 – 26. Boreviulisoma liouvillei Brolemann, 1928. 24, 26 — right gonopod, mesal view. 25 — left gonopod, dorsal view. 24 – 25 — after Brolemann (1928), 26 — after Schubart (1960).