1. P. alleni Ferris 1961

(Jabbari & Niknam 2008) 10♀: L= 476 (381–571) µm; a = 26 (25–28); b = 6 (5–9); b' = 4 (3–4); c = 21 (14–30); c' = 2 (2–3); St = 14 (12–15) µm; V = 82.5 (78–83)

4♂: L= 369 (253–471) µm; a = 28 (27–31); b = 6 (4.5–7.5); b' = 4 (3–5); c = 22 (19–24); c' = 7; St = 13 (12–13) µm; Spicules = 17 (13–22) µm

Associated plants and locality. Vegetables (East Azerbaijan).

Reference. Jabbari & Niknam 2008 [F].

Remarks. The Iranian population of P. al l e n i closely corresponds to the original description (Ferris 1961). It is characterized by having a bluntly rounded lip region with two annuli, lateral fields with four lines, postvulval uterine sac 0.6–1.2 times vulval body diameter long, rounded spermatheca filled with sperm, and subcylindrical tail with rounded smooth terminus (there are 20–30 annuli on ventral side of the tail).