Ailsastra, O'Loughlin & Rowe, 2005

O'Loughlin, P. Mark & Rowe, Francis W. E., 2005, A new asterinid genus from the Indo-West Pacific region, including five new species (Echinodermata: Asteroidea: Asterinidae), Memoirs of Museum Victoria 62 (2), pp. 181-189 : 182

publication ID

https://doi.org/ 10.24199/j.mmv.2005.62.6

persistent identifier

https://treatment.plazi.org/id/03AE7635-470B-2031-FD14-65C2FA26FAEC

treatment provided by

Felipe

scientific name

Ailsastra
status

 

Key to species of Ailsastra View in CoL

1. Rays 5–7; more than 1 madreporite; fissiparous......................................... A. heteractis View in CoL

— Rays predominantly 5; single madreporite; not fissiparous ........................................... 2

2. Integument obscures abactinal and actinal plates; lacking superomarginal spinelets; proximal actinal large pyramidal spines present........................ A. booneni View in CoL

— Abactinal and actinal plates not obscured by integument; superomarginal spinelets present; lacking proximal actinal large pyramidal spines......................... 3

3. Rays narrow at base, R/r> 2.5, digitiform; spinelets up to 0.25 mm long........................ A. paulayi View in CoL

— Rays broad at base, R/r <2.0, not digitiform; spinelets not longer than 0.20 mm .......................... 4

4. Form subpentagonal; up to 8 longitudinal series of papulae across mid-rays; spinelets up to 0.10 mm long........................................ A. amezianeae View in CoL

— Rays discrete, form not subpentagonal; 6 longitudinal series of papulae across mid-rays; some spinelets more than 0.10 mm long............................ 5

5. Proximal abactinal spinelets frequently in bowl-shaped arrangement......................... A. eleaumei View in CoL

— Proximal abactinal spinelets never in bowl-shaped arrangement......................... A. achituvi View in CoL

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