Bethylidae for ID

[Isidro]

16th October 2008.
Saragossa, NE Spain, 200 meters over sea.
Riverine forest. Hibernating in dense group under the loose bark of big plane trees.
Bugs Horvathiolus syriacus can be used for size comparison.
Please help ID! Thanks!

[Isidro]

It has been suggested that "they looks like epyrines, maybe Holepyris"

These are the Iberian species of Holepyris:

Species Holepyris lineatus
Species Holepyris nigerrimus
Species Holepyris punctaticollis
Species Holepyris tibialis
Species Holepyris tricarinatus

Some of them can be at least ruled out? Thanks.