Calanoidea: Families

J.M. Bradford-Grieve


Parapontellidae Giesbrecht, 1892

Description. Female. Rostrum with 2 filaments; rostral margin not extended. Cephalosome and pedigerous somite 1 separate; pedigerous somites 4 and 5 separate. Posterior corners of prosome in lateral view bluntly rounded; dorsal view symmetrical. Urosome with 3 free somites. Genital double-somite symmetrical in dorsal view. Caudal rami symmetrical.

Mouthparts. Antenna 1 with 18-19 free segments; ancestral segments X and XI separate. Antenna 2 exopod with 5-7 free segments; 5-7 setae; with 2 terminal setae; basis and endopod fused. Mandible basis without setae; endopod 1-segmented; endopod terminal segment with 3-5 setae. Maxilla 1 basal exite seta absent; exopod extends short of endopod distal border. Maxilla 2 coxal epipodite seta absent; endopod setae claw-like. Maxilliped with coxa large, but basis and endopod reduced; coxal endite 2 without setae, or with 1 seta.

Legs. Leg 1 basis inner distal seta absent; outer seta absent; endopod with 3 segments; exopod with 3 segments; exopod segment 1 with outer distal spine; exopod segment 3 with 4 inner setae. Leg 2 endopod with 2 segments; exopod with 3 segments; exopod segment 3 with 3 outer spines. Leg 3 basis outer distal spine absent. Legs 3 and 4 endopod with 2 segments; exopod with 3 segments; exopod segment 3 with 3 outer spines; exopod segment 3 with 5 inner setae. Legs 2-4 surfaces naked; terminal spine with outer border serrated. Leg 5 present; very dissimilar from legs 2-4; coxa inner border without seta; symmetrical, biramous or uniramous (Neopontella), not natatory; coxae and intercoxal sclerite fused; basis with 1 small outer seta; exopod segment 1 elongate with long terminal articulate spine (exopod segment 2?), a small outer distal articulated spine, sometimes a small lateral articulated spine; and an inner distal spine which is fused or articulated to exopod segment 1; endopod, if present, 1-segmented, bifid distally.

Mode of life. Pelagic, in oceanic waters or in coastal waters.

Depth distribution. Epipelagic (0-500 m).

Generic composition. This family contains two genera: Neopontella A. Scott, 1909; Parapontella Brady, 1878.


(Variant) Male (sexually dimorphic characters).

Description. Male. Pedigerous somites 4 and 5 fused or partly fused. Posterior corners of prosome in lateral view bluntly rounded, or with 1 acute point; dorsal view symmetrical, or asymmetrical. Urosome asymmetrical in dorsal view.

Mouthparts. Mouthparts well-developed. Antenna 1 geniculate on right. Maxilliped endopod segments 5 and 6 with outer setae normal.

Legs. Right leg 5 uniramous; exopod 2-segmented, segment 1 with proximal inner process and sometimes another distal spine, exopod segments 2+3 drawn out into point, with prominent proximal inner process and sometimes outer edge spine. Left leg 5 uniramous; exopod 2-segmented, segment 1 with small outer distal spine, segments 2+3 with 2 outer, 1 terminal, and sometimes inner proximal spine.



Cite this publication as: 'Bradford-Grieve, J.M. (2002 onwards). Calanoida: families. Version 1: 2 October 2002. http://crustacea.net'.