GBIF Taxonomic Backbone & Wikipedia Registry Profile
Differential diagnosis. Body tripartite, comprising cephalothorax, genital complex and abdomen (Fig. 1 A). Cephalothorax with ventrally-folded lateral margins. Frontal plates reduced, carried on anteriorly-projecting rostral region; lunules well developed (Fig. 1 B). Fourth pedigerous somite free. Genital complex widest part of body and 1.2 times wider than long; dorsal surface ornamented with fingerprint-like rows of minute nodules (Fig. 1 C). Abdomen 2 - segmented; first free somite much broader than second and with posterolateral lobes overlapping small anal somite (Fig. 1 A). Antennule with 23 setae on proximal segment, distalmost setae strongly spinulate (Fig. 1 B). Antenna subchelate but reduced in size (Fig. 1 D), lacking posterior process on proximal segment. Post-antennal process vestigial, represented by unisensillate papillae (Fig. 1 D). Mandible stylet-like with 12 marginal teeth subapically. Maxillule with 3 well developed, hirsute setae on anterior papilla (Fig. 1 D); posterior process absent. Maxilla with robust calamus and canna. Maxilliped subchelate, with smooth myxal margin. Sternal furca absent. Leg 1 lacking plumose setae on posterior margin of distal exopodal segment; spines on distal margin without accessory processes. Leg 2 with 3 - segmented rami; outer spines on exopodal segments 1 and 2 directed obliquely across surface of ramus; endopodal segment 1 ornamented with crescent of spinules distally; segment 2 with row of stout spinules along outer margin. Leg 3 (Fig. 1 E) with reduced apron ornamented with spinules laterally and rosette of larger denticles medially; exopod 2 - segmented; first segment with small outer spine, lacking inner seta; compound distal segment armed with 3 outer spines and 3 inner plumose setae, all derived from incorporated third exopodal segment: endopod 2 - segmented, first segment with reduced velum and armed with inner seta, second segment with 2 apical setae. Leg 4 uniramous, 3 - segmented; first and second exopodal segments with I and III spines, respectively (Fig. 1 F). Mean body length of adult female 2.95 mm, range 2.77 to 3.07 mm (based on 4 specimens). Body length of adult male 1.54 mm.
