Unitanaissus, Błażewicz-Paszkowycz & Bamber, 2012

Błażewicz-Paszkowycz, M. & Bamber, R. N., 2012, The Shallow-water Tanaidacea (Arthropoda: Malacostraca: Peracarida) of the Bass Strait, Victoria, Australia (other than the Tanaidae), Memoirs of Museum Victoria 69, pp. 1-235 : 198

Genus Unitanaissus gen. nov.

Diagnosis of female. Antennule of three articles; antenna of six articles. Labrum naked. Mandible molar process uniformly narrow, with distal bifurcation but no grinding surface; incisor process of left mandible triangular, serrated on anterior border, slightly notched, lacinia mobilis narrower with three rounded distal crenulations. Maxillule apically curved inwards. Maxilliped bases fused, endites short, parallel-sided and entirely narrowed; palp article 1 naked; article 2 with three distal/inner setae, longest of which does not exceed tip of article 3. Sclerite triangular, inserted dorsally to cheliped basis. Chela of cheliped rugose; fixed finger cutting-edge slightly serrated distally. Pereopod 1 dactylus plus unguis half as long as propodus, each of these shorter than merus and carpus combined. Pereopods 2 and 3 carpus with relatively stout ventrodistal spine; pereopods 4 to 6 with dactylus and unguis fused into short, stout claw, propodi without long distal seta. Pleopods with subequal rami, endopod with subdistal inner plumose seta. Uropod biramous, exopod with one segment and shorter than endopod, endopod with two segments, proximal segment without conspicuous distal penicillate setae.

Male. Unknown.

Etymology. From the Latin unus – “one”, and Tanaissus , alluding to the single-segmented uropod exopod, a condition unlike that found in Tanaissus , Protanaissus or Molotanaissus ; masculine.

Type species. Protanaissus floridensis Larsen & Heard, 2004 by monotypy .

Species included: Unitanaissus floridensis (Larsen & Heard, 2004) comb. nov.

Distribution. Atlantic coast of Florida, 7 m depth.