Fig. 5 in The Macrobiotus persimilis-polonicus complex (Eutardigrada, Macrobiotidae), another example of problematic species identification, with the description of four new species

Fig. 5 Macrobiotus siderophilus sp. nov. (Novellara, Italy). a Male with a gibbosity on a hind leg (arrow) and abundant pores on the cuticle (orcein, PhC); b female with abundant pores on the cuticle, the same specimen as Fig. 4d (orcein, PhC); c male with scarce pores on the cuticle (orcein, PhC); d female with scarce pores on the cuticle (orcein, PhC)