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Tegula xanthostigma (A. Adams, 1853) has two shell colour forms: a black form and a brown-green form that was once named as Chlorostoma lischkei Pilsbry, 1889. Recent molecular phylogenetic and eco...

Rochia nilotica is a common marine gastropod species in family Tegulidae. At present, less molecular information of genus Rochia was reported. In the present study, we first determined the complete...

The spawning and larval development of Tegula euryomphala (Jones, 1844) were studied under laboratory conditions. The release of gametes was stimulated by raising temperature from 16 to 19 °C, and could be induced during several months of the year. Males always spawned first. Eggs were 155.6 μm in diameter and remained unattached to each other. Development was similar to that described for other Trochoidea and lasted 3–5 days at 19 °C. Larvae hatched approximately 24 h post-fertilization at the pre-torsional veliger stage. The larval protoconch of the metamorphic veliger measured 247 μm and was ornamented with six spiral threads and weakly ordered granulation. Larvae metamorphose without any natural substratum.