New records of family Hormathiidae (Cnidaria: Actiniaria) from Brazilian coast with description of Paraphelliactis labiata n. sp.
Author
De Melo, Yago A.
Author
Targino, Alessandra K. G.
Author
Gomes, Paula B.
text
Zootaxa
2020
2020-04-22
4766
4
557
574
journal article
22812
10.11646/zootaxa.4766.4.3
bb32c806-d3c0-46a4-9f44-b4c451ca6b56
1175-5334
3765725
urn:lsid:zoobank.org:pub:2F7D5622-E80D-42A4-A10A-C328B70A6379
Genus
Paraphelliactis
Carlgren, 1928
Diagnosis (after
Carlgren 1949
and
Li & Xu 2016
; modifications in italics)
Hormathiidae
with well-developed pedal disc. Column divisible into scapus and scapulus, the former strongly tuberculated and provided with a thick cuticle. Sphincter mesogleal, alveolar.
Tentacles arranged in five or more cycles
, more than or almost equal to mesenteries at the limbus, with or without mesogleal thickenings on the aboral side. Longitudinal muscles of tentacles ectodermal, radial muscles of oral disc ectodermal or more or less mesogleal. Two well developed siphonoglyphs. Mesenteries hexamerously arranged in five cycles, usually six pairs perfect and sterile, last cycle incomplete or complete. Retractors of mesenteries diffuse and weak. Parietobasilar muscles weak. Acontia well developed. No cinclides. Cnidom: Robust and gracile spirocysts, basitrichs, and microbasic
p
-mastigophores.
Type
species:
Paraphelliactis spinosa
Carlgren, 1928