Hesioninae Grube, 1850
publication ID |
https://doi.org/ 10.11646/zootaxa.4739.1.1 |
publication LSID |
lsid:zoobank.org:pub:544B9C82-BF33-4EA1-9411-E1A307137466 |
DOI |
https://doi.org/10.5281/zenodo.3680269 |
persistent identifier |
https://treatment.plazi.org/id/2D1987E4-FFF0-733F-FF23-FC47F1FE6620 |
treatment provided by |
Plazi |
scientific name |
Hesioninae Grube, 1850 |
status |
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Key to genera of Hesioninae Grube, 1850 View in CoL fide Pleijel, 1998
(modif. Rizzo & Salazar-Vallejo 2014)
1 Prostomium with palps; median antennae present or absent.................................................... 2
- Prostomium without palps; median antennae absent; pharynx unarmed................ Hesione Savigny in Lamarck, 1818 View in CoL
2(1) Palps biarticulate; parapodia sesquiramous (with dorsal cirri but without notochaetae), or biramous.................... 3
- Palps simple; parapodia sesquiramous; median antenna absent......................... Elisesione Salazar-Vallejo, 2016 View in CoL
3(2) Pharynx unarmed; parapodia sesquiramous; neurochaetal blades bifid, without guards......... Dalhousiella McIntosh, 1901 View in CoL
- Pharynx with upper and lower jaws, sometimes upper one double; parapodia sesquiramous or biramous................. 4
4(3) Anterior chaetigers without notochaetae, middle and posterior ones biramous; neurochaetal blades often with guards...... 5
- All chaetigers sesquiramous; pharynx upper jaw double, T-shaped, lower jaw single, fang-shaped; neurochaetal blades bidentate, without guards................................................................ Leocratides Ehlers, 1908 View in CoL
5(4) Nuchal organs without lateral projections, sometimes projected posteriorly........................................ 6
- Nuchal organs L-shaped, lateral projections often extended beyond lateral prostomial margins........................ 9
6(5) Prostomial posterior region reduced, as long as, or smaller than anterior one; nuchal organs lobes horizontal C-shaped, never pigmented; pharynx with upper and lower jaws single, fang-shaped............................................. 7
- Prostomial posterior region projected posteriorly, often as long as prostomial anterior region, or longer than it, rarely wider distally (in too contracted specimens this region can be collapsed); nuchal organs lobes U-shaped, sometimes pigmented... 8
7(6) Neurochaetal blades bidentate, guards usually present; notochaetae from chaetiger 5, subdistally denticulate, denticles coarse or fine...................................................................... Leocrates Kinberg, 1866 View in CoL restr.
- Neurochaetal blades unidentate, sometimes with guards surpassing main tooth; notochaetae from chaetiger 4, smooth......................................................................................... Paraleocrates View in CoL n. gen.
8(6) Pharynx with upper jaw double, T-shaped, lower one transverse plate; neurochaetae often brownish........................................................................................... Dalhousia McIntosh, 1885 reinstated
- Pharynx with upper and lower jaws single, fang-shaped; sometimes with a circlet of round denticles; neurochaetae pale, not brownish........................................................................... Paradalhousia View in CoL n. gen.
9(5) Pharynx with upper and lower jaws single, fang-shaped; peristomial dorsolateral and ventrolateral tubercles low, barely projected..................................................................... Lamprophaea Grube, 1867 reinst.
- Pharynx with upper jaw double, T-shaped, lower one a transverse plate; peristomial dorsolateral and ventrolateral tubercles projected........................................................................ Paralamprophaea View in CoL n. gen.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Hesioninae |