Key to species of Peliococcus Borchsenius

1 Multilocular disc pores and oral collar ducts forming round groups on dorsum of thorax and abdominal segments, each group including 2−6 multilocular pores........................................................ turanicus (Kiritshenko)

- Multilocular disc pores and oral collar ducts forming round groups on dorsum of posterior abdominal segments only, each group including 1 or 2, rarely 3 multilocular pores............................................................ 2

2 Large and small oral collar ducts present dorsally only across abdominal segments VI and VII, otherwise present only on mar- gin and submargin of head, thorax and anterior abdominal segments....................... ilamicus Moghaddam sp. n.

- Both large and small oral collar ducts present in transverse rows on all dorsal segments.............................. 3

3 Oral collar ducts numerous on venter.................................................... talhouki Matile-Ferrero

- Oral collar ducts sparse on venter, restricted to abdomen and meso- and metathorax............. kimmericus (Kiritshenko)