A new species of the sun coral genus Tubastraea (Scleractinia: Dendrophylliidae) from Hong Kong Yiu, Sam King Fung Chung, Sheena Suet-Wah Qiu, Jian-Wen Zootaxa 2021 2021-09-28 5047 1 1 16 84VH8 Lesson 1830 [366,502,1449,1476] Anthozoa Dendrophylliidae Tubastraea Animalia Scleractinia 9 10 Cnidaria genus    1a. Colony branching uniplanar...................................................................  T. micranthus  1b. Colony not branching uniplanar.......................................................................... 2   2a. Colony plocoid....................................................................................... 3  2b. Colony non-plocoid................................................................................... 4   3a. Corallite elliptical................................................................................  T. aurea  3b. Corallite non-elliptical................................................................................. 5   4a. Corallite phaceloid.................................................................................... 6  4b. Corallite non-phaceloid........................................................................  T. diaphana   5a. Corallite with moderately deep fossa and up to 48 septa...............................................  T. coccinea  5b. Corallite with deep and spongy/shallow fossa and more than 48 septa....................................  T. faulkneri   6a. Septal arranged in a Pourtalès plan....................................................  T. megacorallita  sp. nov.  6b. Septa arranged normally................................................................................ 7   7a. Corallite with moderately deep fossa and 3 septal cycles..............................................  T. floreana  7b. Corallite with deep fossa and 3 or 4 septal cycles...................................................  T. tagusensis