Ceratophysella gibbosa (Bagnall, 1940)

Achorutes gibbosus Bagnall, 1940: 165 .

Ceratophysella gibbosa – Stach 1949: 138.

CITATION FROM ALGERIA OUTSIDE COLLO. — Baquero et al. (2009: 68).

DISTRIBUTION. — Holarctic region (Thibaud et al. 2004).

REMARK

Rare in our samples, only collected in Oued Z’hor. Specimens are identical to those of Europe for diagnostic characters, but Collo populations include a large proportion of strongly modified ecomorphic specimens, all immatures, which are not present in European populations we have seen so far: maxilla and mandible are degenerated and desclerified, chaetae of labium are shortened, eye size is reduced, unguiculus and mucro are shortened, uneven boss of Abd. V is stronger, and dorsal macrochaetae are distinctly capitated.