Species ID
OC-SP-0002599
Discovered
Phylum
Arthropoda
Species ID
OC-SP-0002599
Provisional Species Name
Heteroserolis sp_MoV7412
Lowest Valid Taxon Name in WoRMS
Heteroserolis
Lowest Known Rank
Genus
Status
Discovered
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Embargo
No
Kingdom
Animalia
Phylum
Arthropoda
Class
Malacostraca
Order
Isopoda
Family
Serolidae
Genus
Heteroserolis
Date Identified
12/11/2025
Taxonomic Remarks
Heteroserolis MoV7412 is immediately distinguished from other species in the genus by the tunnel-like posterior part of the pleotelson giving the impression that the posterior third of the pleotelson is “pinched” so that lateral depressions are visible. Interim diagnosis. Based on female and male. Female 1.4 times as long as wide; male 1.6 times as long as wide. Body dorsally not setose. Head with 1 low posterior tubercle; pereonites 1–4, pleonites 1–3 each bearing long low median tubercle; pereonites 1–6, pleonities 2, 3 laterally smooth in female; pereon, pleon sculpture similar in both sexes. Pereonite 1 anterolateral margins convex. Coxal dorsal plates 1–6 marginally contiguous; coxal dorsal plates 2–4 delimited from pereonite tergites by non-articulating suture; plate 6 barely overlapping pleonal epimeron 3. Male coxal ventral plates 2–4 meeting mesially, without mesial marginal ridges; coxal ventral plates 5, 6 serially fused, bearing transverse bilobed ridge plus second bilobed transverse ridge bearing 2 gonopores. Pleonites 2, 3 epimera margins rounded, tapering in dorsal view. Pleotelson lateral margins almost parallel over anterior half, tapering from halfway; 0.8 times as long as wide; with obsolete medial longitudinal ridge, with submedian concavities over posterior third (appearing laterally pinched), with sublateral acute posteriorly-directed tubercles at about 0.6 of pleotelson length; apex truncate, tunnel-like (0.3 times as wide as pleotelson base), with double margin. Pleonite 1 sternite midventral keel overlapping and slotting into half of keel on pleonite 2; pleonite 2 keel just overlapping pleonite 3 keel; pleonite 3 with grooved keel as long as that on pleonite 2. Uropod attaching at 0.4 length of pleotelson lateral margin; endopod reaching almost to pleotelson apex, tapering to rounded apex; exopod three-quarters as long as endopod, apex truncate, crenellate.
Received All Minimal Data for Discovery
01/04/2026
Description of Material
The species is known from 106 individuals with maximum length of males, 5.9 mm; and of ovigerous females, 10.0 mm.
Ecology
Like all members of this family, Serolidae, the species is benthic living on the surface of the sediment.
Distribution
Australia, Western Australia. IMCRA Southwest Shelf Province, Northwest Shelf Province; 2–134 m depth.
Specimens
Additional Material
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NMV J77061
Family
Serolidae
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NMV J77062
Family
Serolidae
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NMV J77063
Family
Serolidae
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NMV J77064
Family
Serolidae
Additional Material
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NMV J77065
Family
Serolidae
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NMV J77066
Family
Serolidae
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NMV J77067
Family
Serolidae
Additional Material
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NMV J77068
Family
Serolidae
Additional Material
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NMV J77069
Family
Serolidae
Additional Material
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NMV J77071
Family
Serolidae
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