Calanoidea: Families

J.M. Bradford-Grieve


Temoridae Giesbrecht, 1892

Description. Female. Rostrum with 2 filaments, or without filaments; rostral margin extends into 2 points, or extends into 1 point, or not extended. Cephalosome and pedigerous somite 1 separate; pedigerous somites 4 and 5 separate. Posterior corners of prosome in lateral view bluntly rounded, or with 1 acute point, or triangular or obtusely pointed; dorsal view symmetrical. Urosome with 3 free somites, or with 4 free somites. Genital double-somite symmetrical in dorsal view; gonopores close together and totally covered by single genital operculum; without seminal receptacles. Caudal rami symmetrical.

Mouthparts. Antenna 1 with 24-25 free segments; ancestral segments X and XI separate. Antenna 2 exopod with 6-7 free segments; 12 setae; basis and endopod separate. Mandible basis with 4 setae; endopod terminal segment with 8 setae, or 10 setae. Maxilla 1 basal exite seta present, or absent; exopod extends short of endopod distal border. Maxilla 2 coxal epipodite seta absent. Maxilliped coxal endite 2 with 3 setae.

Legs. Leg 1 basis inner distal seta inserted directly on surface of joint; outer seta absent; endopod with 1 segment, or with 2 segments, or 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 1 segment, or with 2 segments, or with 3 segments; exopod with 2 segments, or with 3 segments; exopod segment 3 with 2 outer spines, or with 3 outer spines. Leg 3 basis outer distal spine absent; endopod segment 3 with 6 setae. Legs 3 and 4 endopod with 1 segment, or with 2 segments, or with 3 segments; exopod with 2 segments, or with 3 segments; exopod segment 3 with 2 outer spines, or 3 outer spines; exopod segment 3 with 4 inner setae, or with 5 inner setae. Leg 4 endopod segment 3 with 5 setae. Legs 2-4 surfaces weakly spinulose, or naked; terminal spine with outer border serrated. Leg 5 present; very dissimilar from legs 2-4; coxa inner border without seta; uniramous or biramous but not natatory; coxae and intercoxa sclerite fused; basis simple; usually without endopod; exopod 1-segmented with 1-2 terminal, 1 inner and 0-1 outer spines.

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

Depth distribution. Epipelagic (0-500 m), or bathypelagic (greater than 1000 m).

Generic composition. This family contains six genera - marine species: Temora Baird, 1850 and Temoropia T. Scott, 1894; brackish water species: Eurytemora Giesbrecht, 1881; and freshwater species: Heterocope Sars, 1863, Epischura S. Forbes, 1882, Lamellipodia Schmeil, 1897.


(Variant) Male (sexually dimorphic characters).

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

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 shorter or longer than left exopod, 1-2-segmented, form depends on the genus. Left leg 5 uniramous; exopod 2-segmented, segment 1 with outer distal spine, segment 2 with several spines on outer border and terminally, these 2 segments may be prehensile, opposed to a medium to long inner curved extension of the basis.



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