Antarcturidae Poore 2001
Key to genera of Antarcturidae Poore, 2001 1. Pereopods 2–4 bearing few well spaced straight stiff setae along flexor margins of carpus to propodus; body and limbs covered with fine short setae 2 – Pereopods 2–4 bearing numerous closely and regularly spaced fine ‘filter setae’ along flexor margins o...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2015
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| Online Access: | https://zenodo.org/record/8075557 https://doi.org/10.5281/zenodo.8075557 |
| Summary: | Key to genera of Antarcturidae Poore, 2001 1. Pereopods 2–4 bearing few well spaced straight stiff setae along flexor margins of carpus to propodus; body and limbs covered with fine short setae 2 – Pereopods 2–4 bearing numerous closely and regularly spaced fine ‘filter setae’ along flexor margins of at least merus to propodus; body and limbs smooth 3 2. Pereonal and pleonal segments each with pair of dorsolateral spines of similar lengths; eyes unpigmented Thermoarcturus Paul & Menzies, 1971 – Pleotelson with 1 pair of dorsolateral spines much longer than others; eyes pigmented Spinarcturus Kensley, 1978 3. Antenna flagellum of 9 or more short articles 4 – Antenna flagellum of 4 or fewer short articles 9 4. Pleonite 1 free from remaining segments of pleotelson 5 – Pleonite 1 fused to remaining segments of pleotelson 7 5. Pleonites 5 and 6 with middorsal spines Marmachius Poore, 2012 – Pleonites without middorsal spines 6 6. Head without pair of spines between eyes, pereon and pleon without submedian, sublateral and supracoxal spines; pleotelson without prominent medial posterior spine dorsal to margin Furcarcturus Baltzer, Held and Wägele, 2000 – Head with pair of spines between eyes, pereon and pleon with pairs of submedian, sublateral and supracoxal spines; pleotelson with prominent medial posterior spine dorsal to margin Oxyarcturus Brandt, 1990 7. Pleotelson with paired submedian spines or tubercles, with marginal lateral spines Antarcturus zur Strassen, 1902 – Pleotelson without paired submedian spines or tubercles, without marginal lateral spines 8 8. Head without pair of submedian spines between eyes; pereonites without middorsal, sublateral or supracoxal spines (tubercles at most) Litarcturus Brandt, 1990 – Head with pair of submedian spines between eyes; pereonites with sublateral and supracoxal mushroom-like tubercles; pereonites 1–4 with middorsal tubercles on posterior margins Tuberarcturus Brandt, 1990 9. Pleonites without middorsal spines 10 – One or more pleonites with middorsal spines or ... |
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