Tanacetipathes Opresko, 2001 (Cnidaria: Antipatharia: Myriopathidae) from Brazil, including two new species
Author
Loiola, Livia L.
Author
Castro, Clovis B.
text
Zootaxa
2005
1081
1
31
journal article
50944
10.5281/zenodo.170393
c967bc75-9665-49ae-a020-1e9020be70d8
11755326
170393
Key to the species of the genus
Tanacetipathes
1. Colonies with many secondary pinnules on the posterior primaries (usually more than 8 per pinnule); secondary pinnules frequently on the polypar side of primaries .......... 2
Colonies with few secondary pinnules on the posterior primaries (usually less than 7 per pinnule); secondary pinnules rarely on the polypar side of primaries .................... 3
2. Colonies unbranched or with branches arising from near the colony basis [See Warner, fig. 2, branches on upper part of corallum]; posterior primary pinnules with up to 18 (more frequently 8–10) secondaries; 1–2 small tertiary pinnules, only on proximal secondary pinnules; polypar spines
0.09–0.30 mm
tall, abpolypar spines
0.02–0.21mm
.... ......................................................................................................................
T. thamnea
Colonies with branches arising far from the colony basis, resulting in a fan shape; posterior primary pinnules with up to 42 (more frequently 11–15) secondaries; 2–5 tertiary pinnules, irregularly distributed on both proximal and distal secondary pinnules; polypar spines
0.06–0.14 mm
tall, abpolypar spines
0.03–0.06 mm
..............................
........................................................................................................
T. thallassoros
n. sp.
3. Threeseven elongated abpolypar secondary pinnules per primary, distributed along the whole pinnule .......................................................................................................... 4
Less than three elongated abpolypar secondary pinnules per primary, more frequently set near the pinnule origin ............................................................................................. 7
4. Secondary and tertiary pinnules long: secondaries maximum length
19–47 mm
; tertiaries maximum length
19–26 mm
...................................................
T. longipinnula
n. sp.
Secondary and tertiary pinnules short: secondaries maximum length
7–22 mm
; tertiaries maximum length
5–10 mm
..................................................................................... 5
5. Monopodial colonies or colonies with branches up to the 2nd [mostly 1st] order mainly arising from near the base
...........................................................................
T. tanacetum
Colonies densely branched........................................................................................... 6
6. Branches arranged irregularly; occasionally branches arranged in groups of three or four, arising on the same region of the axis; colonies tending to arborescent; primary pinnules maximum length
15 mm
.............................................................
T. spinescens
Branches arranged laterally, maximum of two arising on the same region of the axis; colonies fan shaped; primary pinnules maximum length
25–30 mm
.................
T. hirta
7. Colonies branched up to the 2nd order; tertiaries absent....................................
T. wirtzi
Colonies branched up to the 5th order; tertiaries present (may be missing oin some secondaries) ....................................................................................................................... 8
8. Primary pinnules up to
45 mm
long
.........................................................
T. barbadensis
Primary pinnules less than
20 mm
long
...................................................
T. cavernicola