Type: Anawekia spinosa Othman & Greenwood, 1994. Total: 3 spp.

Type: Xanthocalanus macrocephalon. Grice & Hulsemann,1970. Total: 7 spp. + 1 indet.

Type: Scolecithrix hibernica A. Scott, 1896.
formes plus ou moins hyperbenthiques. 8 spp.

Type: Procenognatha semisensata. Total: 1 sp.

Type: Pseudophaenna typica Sars, 1903. Total: 1 sp.
Ce genre, placé parmi les Tharybidae, est transféré dans cette famille par Boxshall & Halsey (2004, p.96, 210).

Total: 1 sp.

Type species: Sensiava longiseta. Total: 3 spp. + 1 indet.
Inclus provisoirement par les auteurs dans la famille des Diaixidae.

Type: Thoxancalanus spinatus. Total: 1 sp.

Type species: Vensiasa incerta Markhaseva, 2015.

Diagnosis from Markhaseva (2015, p.183):
Female:
- Cehalosome and pediger 1, pedigers 4 and 5 incompletely separate.
- posterior corners, in dorsal view, triangular ; as rounded lobes, in lateral view.
- Rostrum as a poorly developed plate with 2 filaments.-
A1 24 free segments.
- Coxa of A2 with 1 seta; basis with 2 setae; endopodal segment 1 with 1 seta, exopod setal formula 0,0-0-1, 1, 1, 1, 1, 1, 3.
- Gnathobase of Md with 7-8 teeth; exopod 5-segmented with 1,1,1,1, and 2 setae; endopod segment 1 with 3 setae, 2nd endopod with 9 setae; basis with 3 setae.
- Mx1 praecoxal arthrite with 9 terminal spines, 2 posterior setae and 1 anterior seta; coxal endite with 3 setae, coxal epipodite with 8-9 setae; proximal basal endite with 3 setae, distal basal endite with 2-3 setae; endopod with 5 setae, exopod with 8 setae.
- Mx2 praecoxal endite bearing 5 setae and attenuation, coxal and basal endites with 3 setae each; enditic-like lobe of proximal endopodal segment with 4 setae; 2 setae of distal basal endite and 2 setae of enditic-like lobe equal in length and curved distally; endopod with 6 worm-like (w) and 2 brush-like (br) sensory setae, 3 terminal worm-like setae long, 3 proximal worm-like setae short and very thin and 2 brush-like setae: 1 thick with brush well developed and 1 thin with poorly developed brush.
- Mxp syncoxa with 1, 2 and 3 setae on praecoxal endites.
- P1 to P4 typical clausocalanoidean setation and segmentation.
- P5 uniramous, symmetrical, 3-segmentesd, with 4 setal elements terminally.

Male:
- Rostrum as in female.
- Cephalosome and pediger 1, pedigers 4 and 5 separate.
- Prosome posterior corners as short rounded lobes.
- Right A1 23-segmented; left 24 free segments; ancestral segments X-XI fused.
- Oral appendages sexually dimorphic and moderately reduced compared to females.
- Setatio of A2 asin female.
- Number of setae on Md basis and endopod segment 2 as in female, endopod segment 1 with 2 setae.
- Armament of Mx1 differs from female in: praecoxal arthrite with 1 posterior seta; coxal epipodite with 7 setae; proximal basal endite with 2 setae, and exopod with 7 setae.
- Mx2 praecoxal endite with 4 setae, other lobes with the same setal numbers as in female.
- Mxp setation of syncoxa as in female, distal endopod setae more than 1.6 times longer than basis.
- P1 to P4 as in female.
- P5 nearly as long as urosome; protopods asymmetrical, right leg uniramous, 3-segmented; left leg biramous, endopod longer than 3-segmented exopod.

The new genus Vensiasa is defined among ''Bradfordians'' by the morphology of the sensory setae on the maxillary (Mx2) endopod (6w + 2br), their structure is an apomorphy for the genus: the 3 proximal worm-like setae are remarkably short and thin, 1 brush-like seta is very thin with poorly developed brush and 1 brush-like seta is very thick, brush well developed. Mx1 endopod with 5 setae (vs 7-12 in other diaixids) and male's P5 protopods asymmetrical; left P5 endopod longer than 3-segmented exopod (vs in other diaixids if protopods asymmetrical, then left endopod rudimentary or absent).
The new genus appears to be more closely related to the genus Sensiava.