Home|Search|Identify|Taxonomic tree|Quiz|About this site|Feedback
Developed by ETI BioInformatics
Characteristics, distribution and ecology
Taxonomische classification
Synonyms and common names
Literature references
Images, audio and video
Links to other Web sites

Boeck, 1870

Description
Female head bluntly rounded; male head slightly pointed. First segment of female antennular flagellum (a1) short and about as long as the peduncle; four distal sensory chaetae. Second segment of male antennular flagellum (a1) straight; its spinal extension almost as long as second segment.
First gnathopod with basis almost as long as wide, the frontal margin convex; segments 3-6 short and firm, propodus with frontal and hind margin each provided with a spine.
Second gnathopod with narrow basis (compared to first gnathopod); dactylus longer than dactylus of first gnathopod. Propodus with distal spine on hind margin; dactylus as long as propodus, with two serrated extensions of unequal length and with a small spine in between.
Pereiopods 3-6 firm; hind and front margin of segment both extended into a tooth.
Pereiopods 5-6 with basis wider in male than in female. Pereiopod 5 longer than all other pereiopods; basis widened distally.
Pereiopod 7 with last segment as long as basis.
Uropods with lancet-shaped branches.
Telson about as long as the peduncle of uropod 3.

Size
Length of male 6 mm, female 5 mm.

Depth range
Surface to deep water.

Distribution in the North Sea
Northern North Sea.

World distribution
N Atlantic Ocean, between about 20 and 68°N.

Tryphana malmi