Description
Author: Jan Delsing
Text ID: 116159
Text Type: 1
Page: 0
Created: 2022-06-07 10:31:03 - User Delsing Jan
Last change: 2022-06-07 10:36:57 - User Delsing Jan
Language: EN
Text function: [[t:713939,textblock=116159,elang=EN;Description]]
Species with elevated morphological variability. Usually very depressed (the shortest shell of the group with height lower than one third of length). Position of apex, small and arched, is subcentral. Median crack, placed anteriorly, is short and relatively wide. Ornamentation made by radial cords (about 25), alternate between large and small ones, crossed by evident concentric striae. Median band, joining apex to crack, is crossed by arched lamellae. Base arched. Either white or yellowish in colour, bright internally.
After personal comments concerning the animal, Piani (1984) sets this species in the genus Emarginella Pilsbry, 1890. After having compared the types of E. crebrisculpta Coen, 1939, the same author sets this last one in synonymia with huzardii (confirmed by CLEMAM). Emarginula cusmichiana Brusina, 1866, pointed out in Dalmatia (Croatia) by the author, recently collected in Gabes Gulf (Cecalupo et al, 2008), considered as E. huzardii synonym by CLEMAM, is different since it is more oval in outline, it has a larger height and closer longitudinal ribs. Emarginula divae van Aartsen & Carrozza, 1995, species very similar to huzardii, pointed out in the Israeli coasts, considered as a distinct species by CLEMAM, is recognizable due to a different outline and to a different position of apex. In our opinion it could be included in E. huzardii variability field.
Average measures of adult specimens are around 12-15 mm in length by 5-7 mm in width, but there were also collected specimens more than 25 mm in length.
Scaperrotta, M. ,Bartolini, S. & Bogi, C., 2011. Accrescimenti, Vol. 3. Stages of growth of marine molluscs of the Mediterranean Sea. (secondary description)
Distribution
Author: Jan Delsing
Text ID: 116160
Text Type: 3
Page: 0
Created: 2022-06-07 10:32:12 - User Delsing Jan
Language: EN
Text function: [[t:713939,textblock=116160,elang=EN;Distribution]]
Habitat: it lives adherent to rocks in the infralittoral zone. It feeds on sponges (mainly Verongia aerophaba) and detritus. Distribution: it is collected all over the Mediterranean. Relatively common.
Scaperrotta, M. ,Bartolini, S. & Bogi, C., 2011. Accrescimenti, Vol. 3. Stages of growth of marine molluscs of the Mediterranean Sea. (secondary description)