Tenagomysis Thomson, 1900

Jocque, M. & Blom, W., 2009, Mysidae (Mysida) of New Zealand; a checklist, identification key to species and an overview of material in New Zealand collections, Zootaxa 2304 (1), pp. 1-20 : 13

Tenagomysis Thomson, 1900

Tenagomysis Thomson 1900 , 482–486; Tattersall W.M. 1918, 9–10; Tattersall W.M. 1923, 289–291; Ii 1937, 196; Nouvel 1942, 10; Tattersall O.S. 1955, 180–182; Tattersall O.S. 1957, 122.

The genus description is based on the definition provided in Tattersall W.M. (1918) and completed with observations of later publications. Tenagomysis species are characterized by a short carapace which leaves the last one or two thoracic somites exposed (Tattersall W.M. 1923) and produces anteriorly into a moderately large frontal plate. The antennal scale is lanceolate in shape and setose all round, with a distal suture near the apex. The thoracic legs are slender with the sixth joint divided by vertical articulations into numerous subjoints (4–14), pleopods of the male similar to species in the genus Leptomysis (Mysinae) . The endopod of the first pair are short and unjointed with a lateral plate. The exopod is long and multiarticulate. Second, third, fourth and fifth pleopods of male well developed and single (Tattersall W.M. 1923) or biramous, the rami except in the fourth pair longer than the endopod with a strong spiniform and barbed seta on the outer side of each of the antepenultimate and penultimate joints. Probably the most distinguishing characteristic is the telson, with a distal cleft and the presence of two setose setae in the center of the cleft. The lateral sides of the telson and the cleft are armed with spines. The uropods are long and slender, the exopod has no distal suture or no spines. The endopod has no spines along the inner margin. Females have three marsupial lamellae.

To date, 15 species have been described ( Anderson 2008). Ten are recorded from New Zealand waters.