Micropachyiulus pygmaeus ( Attems, 1904 )

Vagalinski, Boyan, Evsyukov, Aleksandr P., Chumachenko, Yuri A. & Zabiyaka, Igor Y., 2023, A review of the genus Micropachyiulus Verhoeff, 1899 and description of the related Armeniopachyiulus gen. nov. (Diplopoda: Julida: Julidae: Pachyiulini), Zootaxa 5239 (2), pp. 221-246 : 231

Micropachyiulus pygmaeus ( Attems, 1904)

Pachyiulus (Hylopachyiulus) pygmaeus Attems, 1904: 183–184 , figs 23, 24

Micropachyiulus pygmaens (sic!): Verhoeff (1907: 460)

Micropachyiulus (Micropachyiulus) pygmaeus: Verhoeff (1907: 461)

Hylopachyiulus pygmaeus: Attems (1926a: 258) ; Antić et al. (2018: 234 , figs 6–8E, F)

Hylopachyiulus corylorum: Strasser (1966: 44) (synonymization)

Hylopachyiulus likanus: Strasser (1966: 44) (synonymization)

Diagnosis. A species of Micropachyiulus without ommatidia. Differs from all congeners by a relatively welldifferentiated mesomeral process being clearly divided from the opisthomere in its distal half, vs. the mesomeral process being mostly fused to the opisthomere, with only a small freely protruding apical part in the remaining species.

Otherwise very similar to Micropachyiulus corylorum , Micropachyiulus ocellatus comb. nov. and Micropachyiulus paucioculatus in terms of gonopod conformation, and especially in the shape of the solenomere which ends up with a minute, transversely oriented apical projection. Differs easily from M. ocellatus comb. nov. by a long and pointed (vs. short and blunt) epiproct, and from M. paucioculatus —by a much shorter solenomere (subequal to tip of mesomeral process and apical margin of posterior lamella, vs. considerably overreaching both of them). Differs from M. corylorum , by a slender and straight (vs. stout and bent ventrad) epiproct and by details of the opisthomere: absence of a rod-like process next to the solenomere and solenomere and mesomeral process subequal in height (vs. solenomere considerably overreaching tip of mesomeral process).

Distribution ( Fig. 14 , cyan circle). Bosnia and Herzegovina: Banja Luka (type locality).

Figures

FIGURE 14. Distribution of the genera Micropachyiulus Verhoeff, 1899 and Armeniopachyiulus gen. nov.