Only Guettaria amongst the holasterids has supplementary gonopores in its ocular plates. Lampadaster differs from that genus in having only fine tuberculation aborally, without obvious major tubercles. Very like Seunaster in appearance, but with supplementary gonopores in ocular plates II and IV.
Lambert (1896) attributed a second species to this genus, L. gauthieri Lambert, 1896, from the Campanian-Maastrichtian of north Madagascar. This resembles Gauthieria in having a well-developed anterior sulcus from peristome to apex, and like Gauthieria, has auxilliary gonopores in ocular plates II and IV.
Cotteau, G. H. 1889. Bulletin de la Societe geologique de France Serie 3, 14, p. 88.
Lambert, J. 1896. Note sur quelques echinides Cretaces de Madagascar. Bulletin de la Societe geologique de France, Serie 3, 24, 313-332.