Rhachotropis, S. I. Smith, 1883
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publication ID |
https://doi.org/ 10.1080/00222930600956809 |
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DOI |
https://doi.org/10.5281/zenodo.5228424 |
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persistent identifier |
https://treatment.plazi.org/id/03AB0746-154D-5248-FE73-2A1EFB27FAF8 |
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treatment provided by |
Felipe |
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scientific name |
Rhachotropis |
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Key to Atlantic Rhachotropis View in CoL
1. Telson entire.................... 2
– Telson cleft or emarginate................ 4
2. Eyes present................ R. integricauda View in CoL
– Eyes absent..................... 3
3. Pleon, segments 1 and 2 with dorsal tooth only........ R. caeca View in CoL
– Pleon, segments 1 and 2 with lateral tooth only..... R. flamina View in CoL n. sp.
4. Rostrum long or medium................. 5
– Rostrum short................... 14
5. Eyes present.................... 6
– Eyes absent.................... 10
6. Telson emarginated.................. 7
– Telson cleft..................... 8
7. Pereon, segment 7 and pleon segments 1-3 with median dorsal tooth. R. proxima View in CoL
– Pereon, segment 7 and pleon segments 1-3 smooth smooth..... R. glabra View in CoL
8. Epimeral, plate 3 hardly denticulate.............. 9
– Epimeral, plate 3 not hardly denticulate......... R. inermis View in CoL
9. Pereon, segments 6-7 with acute dorsal processes....... R. aculeata View in CoL
– Pereon, segment 6 smooth, segment 7 with a posterodorsal mucronation R. oculata View in CoL
10. Epimeral, plate 3 hardly denticulate............. 11
– Epimeral, plate 3 weakly denticulate............ 12 11. Pleon, segments 1-2 armed............. R. rostrata View in CoL
– Pleon, segments 1-2 not armed........... R. pilosa View in CoL n. sp.
12. Pleon, segment 1 with one dorsal and two lateral teeth..... R. proxima View in CoL
– Pleon, segment 1 smooth................ 13
13. P7 basis lobate, ‘‘accessory flagellum could not be found’’.... R. faeroensis View in CoL
– P7 basis not lobate, accessory flagellum present but minute.... R. distincta View in CoL
14. A1, article 1 with a terminal spine......... R. licornia n. sp.
– A1, article 1 without terminal spine............. 15
15. Eyes present................... 16
– Eyes absent.................... 21
16. Eyes yellowish white............. R. leucophthalma View in CoL
– Eyes not white................... 17
17. Eyes reduced in size.............. R. lomonosovi View in CoL
– Eyes large.................... 18
18. Pleon, segment 3, dorsally rounded without tooth....... R. inflate
– Pleon segment 3 with dorsal tooth............. 19
19. Pereon, segments 1-3 ‘‘raised dorsally’’ (Sars dixit)....... R. helleri View in CoL
– Pereon, segments 1-3 not (raised dorsally)........... 20
20. Urosome, segment 1 smooth............. R. grimaldii View in CoL
– Urosome, segment 1 with a tooth........... R. macropus View in CoL
21. P5-7 basis expanded in an acute projection........ R. palporum View in CoL
– P5-7 basis not expanded in an acute projection......... 22
22. Telson cleft for one-third length.............. 23
– Telson emarginate.................. 24
23. Urosome, segment 1 weakly carinate. Coxa 1 strongly produced.. R. thordisae View in CoL
– Urosome, segment 1 without carina. Coxa 1 weakly produced.... R. gislii View in CoL
24. Urosome, segment 1 without tooth.......... R. portoricana View in CoL
– Urosome, segment 1 with dorsal tooth............ 25
25. Pleon, segments 1-2 weakly tridentate dorsally....... R. thorkelli View in CoL
– Pleon, segments 1-2 slightly humped with low dorsal tooth..... R. arii View in CoL
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