Genus Bacillidesmus Attems, 1898

Type species.

Brachydesmus filiformis Latzel, 1884, by monotypy.

Diagnosis.

The monospecific Bacillidesmus seems to be the only European Trichopolydesmidae characterized by four regular rows of relatively long trichoid setae on rings 4-18 (Fig. 1A).

In addition, the diagnosis can be amended with the following combination of characters (see also Remarks): small species (4-4.5 mm), 19 body rings (including telson), sensilla basiconica completely enclosed inside the pit of antennomere 6, hypoproct with only two long distal setae, paraprocts with only 2+2 long setae, anterior legs in male with ventral denticles on prefemora, femora, postfemora, tibiae and tarsi (Fig. 1E, F), gonopod telopodite deeply divided into two branches, solenomere (s) and solenophore (sph) situated one below the other, solenomere long and simple, with a lamella, but without additional processes (Figs 1G, 17A-C).