Group sibiricus
Diagnosis.
This group is characterized by the following combination of characters: (1) 3.5 mm ≤ body length ≤ 4.3 mm; (2) antennomere III shorter than or as long as II; VI transverse, length/width ≤ 0.5; (3) metathoracic wings fully developed; (4) aedeagus with median lobe not turning to right at apex; (5) spermatheca simply curved in distal part. Species included:
P. (s. str.) chenggongi Wang, Nishikawa, Perreau, Růžička & Hayashi, 2016 (China (Taiwan))
P. (s. str.) funiu sp. n. (China (Henan))
P. (s. str.) haba sp. n. (China (Yunnan))
P. (s. str.) hayashii Wang, Růžička, Perreau, Nishikawa & Park, 2016 (Russia (Far East))
P. (s. str.) kuntzeni Sokolowski, 1957 (China (Taiwan), Japan)
= P. (s. str.) amamianus Nakane, 1963
P. (s. str.) sibiricus Jeannel, 1934 (Russia (Far East), South Korea)
P. (s. str.) tingtingae Wang, Nishikawa, Perreau, Růžička & Hayashi, 2016 (China (Taiwan))