TABLE 1. Comparison of morphological and ecological characters of the genera in the subfamily Oulenziinae.

	Oulenzia Radford, 1950	Oulenziella gen. n.	Procalvolia Fain, 1971	Psylloglyphus Fain, 1966	Acalvolia Fain, 1971
Ocelli	Present	Present	Present	Absent	Absent
Prodorsal setae sce: sci	> 6	3 to 5	3 to 4	3?	2 to3
Idiosomal setae e 2	≥ 2× e 1	≤ 1× e 1	1.5× to 2× e 1	≤ 1× e 1	≤ 1× e 1
Spermathecal duct	moderate, not forming loops	moderate, not forming loops	Unknown	long, forming 5-6 loops	moderate, not forming loops
Genual solenidia σ″: σ ′	> 5	3 to 4.5	1 to 2	1?	<2
Tibial setae hT I-II and kT IV	Absent	Present	Present	Present	Present
Tarsal setae la II, ra II and w III	Absent	Present	Present	Present	Present